A pig farm and blue ear disease purification scheme thereof

Abstract

The present invention provides a pig farm and a blue ear disease purification scheme thereof, the pig farm includes a fattening area, a breeding area and a nursery area, and also provides a pig house system in the pig farm, including an insulation door, an air filter, an air conditioner, an air inlet, an air delivery pipeline, a negative pressure fan, a sterilization wall, an aluminum-magnesium-manganese bellows, a trench fan, a pig house, a slatted plate, and a lower trench. The present invention also provides a blue ear disease purification scheme formed by the pig farm through introduction, group closure, unified immunization and biological monitoring. The present invention can effectively improve the pig farm environment through the application of a precise vertical ventilation system, insulation mortar, and temperature-adjusting wet curtains, and then combined with the blue ear disease purification scheme of the present invention, it can effectively achieve the purification of blue ear disease in pigs and shorten the purification time.

Description

Technical Field

[0001] The invention relates to the technical field of livestock and poultry breeding, and in particular to a pig farm and a blue ear disease purification scheme thereof. Background Art

[0002] In recent years, with the rapid development of the domestic pig industry, intensive and large-scale pig farms have accounted for an increasingly larger proportion in the breeding industry. Due to production needs, pig farms have reserve breeding pigs entering the basic sow herd every year (i.e., introduction of breeds), especially in pig farms that implement batch production. The annual breeding pig renewal rate of pig farms is between 25% and 40%. In this process, diseases such as blue ear disease, porcine epidemic diarrhea, and pseudorabies can easily follow the entry of reserve breeding pigs into the herd, causing instability in the herd and even death. On June 23, 2022, under the premise of the relevant provisions of the "Animal Epidemic Prevention Law of the People's Republic of China", the Ministry of Agriculture and Rural Affairs issued a revised version of the "List of Class I, II, and III Animal Epidemic Diseases". Porcine reproductive and respiratory syndrome (PRRS, commonly known as blue ear disease) and porcine epidemic diarrhea (PED) are both Class II animal diseases.

[0003] In particular, due to its unique immune response mechanism and strong transmission ability, the prevention and control points of porcine blue ear disease are relatively complex, which poses new challenges to the economic benefits of pig farms. It not only directly causes the death of a large number of pigs, but also destroys the immune system of pigs and causes serious secondary infections. Specifically, sows have serious reproductive disorders: weaned sows do not estrus for a long time; pregnant sows have increased abortions, stillbirths, and mummies; the age of growing pigs to reach 100 kg is delayed by 10 to 25 days.

[0004] At present, many pig farms lack awareness of prevention and control, and the prevention and control of blue ear disease is still a major problem in the purification of pig farms. Therefore, when introducing new breeds, pig farms choose blue ear disease double-negative pigs (that is, both blue ear disease antigens and antibodies are negative) as a safer solution. However, there are few sources of blue ear disease double-negative pigs (many need to be imported from abroad) and they are expensive, which undoubtedly narrows the scope of introduction and increases the cost of pig farms.

[0005] Although blue ear disease can form a persistent infection in pigs, it is different from pigs infected with pseudorabies for life. The breeding pigs stop excreting the virus 120 to 180 days after being infected with the blue ear virus. Taking advantage of this feature, most large-scale pig farms abroad have basically eliminated blue ear disease through measures such as immunization, strengthened management and closed pig herds. However, most of its purification schemes rely on immunization and biosafety measures, and the operation methods are highly professional and have narrow adaptability. Any omissions in any link can easily lead to purification failure, affecting the profitability of the pig farm. The purification time is also longer, which also increases the breeding cost. But in fact, the environment and facilities of the pig farm are also important factors affecting the purification of blue ear disease in pigs.

[0006] In summary, how to provide a pig farm and a blue ear disease purification solution thereof, which can improve the purification effect of blue ear disease and enable the pig herd to achieve double negative as soon as possible, is a problem that the present invention urgently needs to solve. Summary of the invention

[0007] The purpose of the present invention is to solve the deficiencies of the prior art and to provide a pig farm, which can effectively improve the pig farm environment through the use of precise vertical ventilation system, thermal insulation mortar and temperature-regulating wet curtains, and then combine with the blue ear disease purification scheme of the present invention to effectively purify blue ear disease in pigs and shorten the purification time.

[0008] The object of the present invention is achieved in that:

[0009] A pig farm, comprising: a fattening area, a breeding area and a nursery area, wherein the breeding area and the fattening area are respectively located on both sides of the plant area, the nursery area is arranged inside the fattening area, a disinfection center is arranged inside the breeding area, a central cleaning room is arranged on the right side of the disinfection center, a gestation shed 1, a farrowing shed 1, a gestation shed 2 and a farrowing shed 2 are arranged below the central cleaning room in sequence, a reserve room is arranged on the left side of the gestation shed 1, a vaccine pharmacy is arranged below the reserve room, a function room is arranged on the right side of the vaccine pharmacy, a disinfection center is arranged inside the fattening area, and the disinfection center A central cleaning room is set on the lower right side, and fattening house one and fattening house two are arranged successively below the central cleaning room. Nursery area one and nursery area two are set on the far left of the fattening house one, fattening house three and fattening house four are set below the fattening house one and fattening house two, fattening house five and fattening house six are set below the fattening house three and fattening house four, a functional room is set on the left side of the fattening house group, the breeding area is 200 meters away from the nursery area, and the nursery area is 50 meters away from the fattening area, and the fattening area, breeding area and nursery area use the same ventilation system.

[0010] The present invention also provides a pig house system in a pig farm, comprising: an insulation door, an air filter, an air conditioner, an air inlet, an air delivery pipeline, a negative pressure fan, a sterilization wall, an aluminum-magnesium-manganese bellows, a trench fan, a pig house, a slatted plate, and a lower trench. The insulation door is located below the air inlet, the air filter is located on the opposite side of the insulation door, an air conditioner is installed above the air filter, and the air conditioner is located on the opposite side of the air inlet. The air delivery pipeline is connected to the air inlet, a bellows is connected below the air delivery pipeline, a heat exchange pipeline is provided on the air delivery pipeline, a negative pressure fan is provided on the right side of the air delivery pipeline, a sterilization wall is installed on the right side of the negative pressure fan, the pig house is located below the bellows, a slatted plate is provided below the pig house, a lower trench is opened below the slatted plate, a trench fan is provided on the right side of the lower trench, and a pipeline is provided on the right side of the trench fan to connect with the sterilization wall.

[0011] Preferably, the air filter structure is: the first layer is a 304 stainless steel 20-mesh mosquito-proof net, the second layer is a 250g / m2 non-woven fabric, the third layer is a primary filter net, and the fourth layer is a sub-high efficiency filter.

[0012] Preferably, the bellows comprises: a bellows pipe and an air duct, the bellows pipe is made of aluminum-magnesium-manganese material, an aluminum-magnesium-manganese plate is arranged in the air duct, the bellows pipe is connected to the aluminum-magnesium-manganese plate in the air duct, and the bellows are each individually aimed at a pig house.

[0013] The present invention also provides a thermal insulation mortar for a pig house system, wherein the thermal insulation mortar is used for the floor and / or wall of the pig house system, and the thermal insulation mortar is an expanded vitrified microsphere thermal insulation mortar, which uses modified vitrified microspheres as thermal insulation materials, and the preparation method of the modified vitrified microspheres comprises the following steps:

[0014] S1. Pulp rock is crushed and classified to obtain 200-300 mesh ore sand, and the ore sand is preheated at 100-120°C for 10-20 minutes;

[0015] S2. Put the preheated ore sand into a vacuum furnace, heat the vacuum furnace to 900-1000°C at a rate of 2-4°C / min and keep it for 30-40min to soften the ore sand part, then spray ceramic fiber evenly on the surface of the ore sand for the first time, and continue heating at this temperature for 30-40min;

[0016] S3, heating the vacuum furnace to 1000-1100°C at a rate of 0.5-1°C / min to further soften and expand the ore sand, and after reaching this temperature, spraying the humidified ceramic fiber evenly onto the surface of the ore sand for the second time, and continue heating at this temperature for 15-30 minutes;

[0017] S4, spraying molten paraffin wax on the surface of the mineral sand obtained in step S3, and adjusting the temperature of the vacuum furnace to 1150-1200° C. to make the mineral sand vitrified and closed-pore, thereby obtaining modified vitrified microspheres.

[0018] Preferably, the diameter of the ceramic fiber is 2-4 μm, the length of the ceramic fiber sprayed for the first time is 0.05-0.1 mm, the length of the ceramic fiber sprayed for the second time is 0.3-0.4 mm, the mass ratio of the ceramic fiber sprayed for the first time, the ceramic fiber sprayed for the second time and the pitch rock is (1-3):(2-4):100, the amount of water humidified in the ceramic fiber sprayed for the second time in step S3 is 2-3%, and the amount of molten paraffin sprayed in step S4 is 3-5% of the mass of the ore obtained in step S3.

[0019] The present invention also provides a wet curtain for a pig house system, wherein the wet curtain paper used in the wet curtain is prepared by:

[0020] A. Sizing and drying: Soak the base paper material in a 30-50% by mass phenolic resin aqueous solution for 20 minutes, take it out, and dry it at 70°C for 20 minutes;

[0021] Paper cutting and corrugation pressing: The dried base paper is cut according to production requirements, and the cut base paper is pressed into corrugated grooves to obtain a single piece of corrugated paper.

[0022] B. Stack multiple single-piece corrugated paper in an interlaced manner according to production requirements, fill temperature-regulating particles between adjacent single-piece corrugated paper, and bond two adjacent single-piece corrugated paper, as well as between the single-piece corrugated paper and the temperature-regulating particles, by adhesive; the adhesive is one of acetate-acrylic emulsion, styrene-acrylic emulsion, and glass glue.

[0023] C. Curing the adhesive at 110-120°C for 30-60 minutes to obtain box-type wet curtain paper, and slicing the box-type wet curtain paper according to production requirements to obtain wet curtain paper.

[0024] Preferably, the filling amount of the temperature regulating particles is 50 to 100 g / m 2 A single piece of corrugated paper, wherein the method for preparing the temperature regulating particles comprises:

[0025] The clay and porous metal fiber are dispersed evenly in a vacuum disperser, and then mixed evenly with the solid phase change material and graphite powder, and then a mixture of carboxymethyl cellulose and water is added to make 1-~ particles. The surface of the obtained particles is sprayed with a mixture of molten PP pellets and porous metal sheets, and the temperature-regulating particles are obtained after cooling.

[0026] The porous metal sheet is used after the following pretreatment: the porous metal sheet is placed in boiling water, then a saturated ferric chloride solution is dripped into it, and the boiling is continued for 20 to 30 minutes, and then the water is filtered out and dried, thus completing the pretreatment.

[0027] Preferably, the temperature regulating particles are divided into first temperature regulating particles, second temperature regulating particles and third temperature regulating particles. The phase change material in the first temperature regulating particles is paraffin-40 and heptadecane in a mass ratio of 1:(0.1-0.3), the phase change material of the second temperature regulating particles is decadecanoic acid, heptadecane and polyethylene glycol 1000 in a mass ratio of 1:(0.1-0.3):(0.1-2.0), and the phase change material of the third temperature regulating particles is tetradecanol and dodecanol in a mass ratio of 1:(1-2).

[0028] The number of sheets of a single corrugated paper is n, the first temperature regulating particles are filled between the 1st to n / 3rd sheets of corrugated paper, the second temperature regulating particles are filled between the (n+1) / 3rd to 2n / 3rd sheets of corrugated paper, and the third temperature regulating particles are filled between the (2n+1) / 3rd to nth sheets of corrugated paper.

[0029] Preferably, the mass ratio of the clay to the porous metal fiber is (0.02-0.06):1, the mass ratio of the phase change material, porous metal fiber, graphite powder, carboxymethyl cellulose and water mixture, and PP pellets is 1:(0.08-0.2):(0.03-0.06):(0.1-0.2):(0.05-0.1), the mass ratio of the PP pellets to the porous metal sheet is 1:(0.04-0.08), the porous metal fiber and the porous metal sheet are made of iron, aluminum or copper, and the ferric chloride accounts for 5-10% of the mass of the porous metal sheet.

[0030] The present invention also provides a blue ear disease purification scheme for the pig farm, comprising:

[0031] (I) Introduction of breeds: Introduce enough reserve breeding pigs (aged between 100 and 180 days) and some pregnant sows at one time. The introduced breeding pigs shall be tested for blue ear antigen to ensure that they are negative.

[0032] (ii) Closure: The breeding herd (basic breeding herd and reserve breeding herd) is closed for 6 months, during which time only people can leave but not enter. The reserve breeding herd is raised separately from the basic breeding herd, and breeding herds that are not suitable for breeding and sub-healthy sows carrying blue ear disease are eliminated regularly (the S / P value of blue ear disease detected by IDEXX ELISA kit is higher than 2.0 for two consecutive times, the sows have conjunctivitis, bleeding spots on the back, reproductive disorders, and the stillbirth rate exceeds the standard).

[0033] (III) Unified immunization: The entire closed breeding pig herd and each batch of suckling piglets aged 14 to 28 days are immunized with inactivated blue ear vaccine.

[0034] Immunization program (after the introduction of new breeds): In the first week, the whole breeding herd will be vaccinated with inactivated blue ear vaccine. In the third week, the whole breeding herd will be vaccinated with inactivated blue ear vaccine for the second time. In the sixth week, the reserve sows will be vaccinated with inactivated blue ear vaccine according to the normal immunization program. In the following three months, the inactivated blue ear vaccine will be vaccinated.

[0035] (IV) Biological monitoring:

[0036] (1) Before the reserve breeding pigs enter the herd, blood is collected from each pig for blue ear antibody testing, and antibody-positive pigs are removed from the breeding herd to ensure that the reserve pigs entering the herd are blue ear antibody negative;

[0037] (2) The breeding pig herd is sampled once a week for blue ear antigen testing. If a positive result is found in the mixed test, it will be separated and the pigs with positive blue ear antigen test will be eliminated;

[0038] (3) Blood was collected from each batch of weaned sows and tested for blue ear antibodies using the American IDEXX test kit. Sows with an S / P value of more than 2.0 were eliminated;

[0039] (4) Collect testicular fluid from castrated piglets in the farrowing room for blue ear antigen testing. If the test result is positive, the sow that gave birth to the piglets in the litter is tracked down and eliminated;

[0040] (5) Blood samples were collected from each batch of growing pigs at the 8th and 20th weeks of age to test for PRRSV antibodies.

[0041] a. If the antibody test is positive at the 8th week of age, choose tilmicosin + compound amoxicillin + multivitamin health care for 7 to 10 days. After that, add multivitamin to drinking water during the rotation of the pig herd to relieve stress.

[0042] b. If the antibody test is positive at the 20th week of age, choose tilmicosin + compound amoxicillin + multi-dimensional health care for 7 to 10 days, and give a supplementary injection of blue ear inactivated vaccine.

[0043] c. The feeding of batches of growing pigs shall be carried out under closed management, with all-in and all-out requirements, and the pigs shall be disinfected regularly.

[0044] d. After the batch of live pigs is released or transferred out, the pens should be cleaned thoroughly first → spray disinfected with chlorine-based disinfectants → closed fumigation disinfection for 24 hours → pens should be whitened.

[0045] e. Leave the pens vacant for one week, and take samples from the pens to test for blue ear antigens before bringing in pigs. If the test result is negative, the pigs can be admitted. Otherwise, the pens must be cleaned and disinfected again according to the above process.

[0046] The beneficial effects of the above scheme are:

[0047] 1. The pig farm of the present invention adopts a precise vertical ventilation system and filters the air through four layers, so that each pig can breathe fresh air individually.

[0048] 2. The present invention can effectively achieve the purification of blue ear disease and shorten the purification time through a reasonable blue ear purification scheme, a strict monitoring scheme and biosafety measures.

[0049] 3. The floor or wall of the pig house system of the present invention adopts thermal insulation mortar, which can not only enhance the thermal insulation effect, but also reduce the moisture of the ground and walls, thereby improving the pig farm environment, reducing bacteria breeding and livestock and poultry diseases, which is beneficial to the healthy growth of pigs, and is environmentally friendly and energy-saving.

[0050] 4. The thermal insulation mortar of the present invention adopts modified vitrified microspheres. When preparing the modified vitrified microspheres, the ceramic fibers are sprayed into the surface of the ore sand twice after the ore sand begins to soften. Since the ore sand gradually softens and expands, and the ceramic fibers shrink during high-temperature firing, the ceramic fibers on the surface of the ore sand gradually shrink inward. Therefore, the ceramic fibers are finally distributed in two layers in the vitrified microspheres, which serves the purpose of reinforcing the vitrified microspheres, enhancing the cylinder pressure strength of the vitrified microspheres, and reducing the breakage rate of the vitrified microspheres in the construction and mixing process, thereby ensuring the bulk density stability of the thermal insulation mortar, and then ensuring that the thermal conductivity of the thermal insulation mortar is uniformly at a low level, and also enhancing the strength of the thermal insulation mortar.

[0051] 5. When preparing the modified vitrified microspheres, the present invention uses humidified ceramic fibers when spraying ceramic fibers evenly onto the surface of the ore sand for the second time. After the ceramic fibers enter the softened layer of the ore sand, the water evaporates rapidly to form certain pores around the ceramic fibers, which not only helps the ceramic fibers to move into the interior of the ore sand, but also increases the internal porosity of the vitrified microspheres, thereby promoting the dispersion of the vitrified microspheres in the mortar.

[0052] 6. The present invention sprays molten wax onto the surface of mineral sand before the vitrified closed pores, so that the molten wax quickly penetrates into the pores after the mineral sand expands. The wax in the internal pores of the vitrified microbeads formed in this way can play a role in fixing and buffering the pores after cooling and solidifying, thereby enhancing the strength of the vitrified microbeads, reducing the breakage rate of the vitrified microbeads in the subsequent construction and mixing process, and also enhancing the strength of the thermal insulation mortar; in addition, the wax coated on the pore surface of the vitrified microbeads also reduces the water absorption rate of the pores, and the thermal conductivity of the wax is very small, which reduces the thermal conductivity of the thermal insulation mortar together.

[0053] 7. When preparing wet curtain paper, the present invention adopts the method of filling temperature-regulating particles between single sheets of corrugated paper. When hot air passes through the wet curtain, the temperature of the temperature-regulating particles rises, and the phase change material inside the temperature-regulating particles undergoes phase change and absorbs heat, thereby effectively reducing the temperature of the air passing through the wet curtain.

[0054] 8. Since the temperature of the hot air passing through the wet curtain gradually decreases, the temperature-regulating particles of the present invention are arranged in sequence so that the phase change temperatures of the phase change materials in the first temperature-regulating particles, the second temperature-regulating particles and the third temperature-regulating particles decrease successively, thereby making full use of the temperature-regulating effect of the temperature-regulating particles and reducing the air temperature.

[0055] 9. The temperature regulating particles of the present invention include an inner layer of phase change material and an outer sealing layer, wherein both the inner layer and the outer layer contain thermally conductive metal, which promotes the heat transfer of the phase change material. The pores of the porous metal fibers inside the temperature regulating particles contain clay (negatively charged colloid), and the pores of the outer porous metal sheet contain iron hydroxide colloid (positively charged colloid) after pretreatment. Therefore, the inner metal layer and the outer metal layer can adsorb each other, further promoting heat transfer. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 It is a schematic diagram of a pig farm of the present invention;

[0057] Figure 2 It is a schematic diagram of the pig house system of the present invention.

[0058] In the figure: 1. Insulated door; 2. Air filter; 3. Air conditioner; 4. Air inlet; 5. Air delivery duct; 6. Negative pressure fan; 7. Sterilization wall; 8. Bellows; 81. Bellows pipe; 82. Air duct; 9. Trench fan; 10. Pig house; 11. Slatted board; 12. Lower ditch. DETAILED DESCRIPTION

[0059] The present invention is further explained in detail below with reference to the accompanying drawings in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0060] Example 1

[0061] like Figure 1 As shown, this embodiment provides a pig farm, including: a fattening area, a breeding area and a nursery area, the breeding area and the fattening area are respectively located on both sides of the plant area, the nursery area is arranged inside the fattening area, a disinfection center is arranged inside the breeding area, a central cleaning room is arranged on the right side of the disinfection center, a gestation house 1, a farrowing house 1, a gestation house 2, and a farrowing house 2 are arranged below the central cleaning room in sequence, a reserve room is arranged on the left side of the gestation house 1, a vaccine pharmacy is arranged below the reserve room, a function room is arranged on the right side of the vaccine pharmacy, a disinfection center is arranged inside the fattening area, and the A central cleaning room is set on the lower right side of the disinfection center, and fattening house 1 and fattening house 2 are arranged below the central cleaning room in sequence. Nursery area 1 and nursery area 2 are set on the far left of the fattening house 1, fattening house 3 and fattening house 4 are set below the fattening house 1 and fattening house 2, fattening house 5 and fattening house 6 are set below the fattening house 3 and fattening house 4, and a functional room is set on the left side of the fattening house group. The breeding area is 200 meters away from the nursery area, and the nursery area is 50 meters away from the fattening area. The fattening area, breeding area and nursery area use the same ventilation system.

[0062] like Figure 2As shown, the present embodiment also provides a pig house system, including: an insulation door 1, an air filter 2, an air conditioner 3, an air inlet 4, an air delivery duct 5, a negative pressure fan 6, a sterilization wall 7, an aluminum-magnesium-manganese bellows 8, a trench fan 9, a pig house 10, a slatted plate 11, and a lower trench 12, wherein the insulation door 1 is located below the air inlet 4, the air filter 2 is located on the opposite side of the insulation door 1, an air conditioner 3 is installed above the air filter 2, the air conditioner 3 is located on the opposite side of the air inlet 4, and the air delivery duct 5 Connected to the air inlet 4, a bellows 8 is connected below the air delivery duct 5, a heat exchange duct is provided on the air delivery duct 5, a negative pressure fan 6 is provided on the right side of the air delivery duct 5, a sterilization wall 7 is installed on the right side of the negative pressure fan 6, the pig house 10 is located below the bellows 8, a slatted plate 11 is provided below the pig house 10, a lower ditch 12 is opened below the slatted plate 11, a ditch fan 9 is provided on the right side of the lower ditch 12, and a pipeline connected to the sterilization wall is provided on the right side of the ditch fan 9.

[0063] The structure of the air filter 2 is as follows: the first layer is a 304 stainless steel 20-mesh mosquito-proof net, the second layer is a 250g / m2 non-woven fabric, the third layer is a primary filter net, and the fourth layer is a sub-high efficiency filter.

[0064] The bellows 8 includes: a bellows pipe 81 and an air duct 82 . The bellows pipe 81 is made of aluminum-magnesium-manganese material. An aluminum-magnesium-manganese plate is arranged in the air duct 82 . The bellows pipe 81 is connected to the aluminum-magnesium-manganese plate in the air duct 82 . The bellows 8 are each individually aimed at a pig house 10 .

[0065] How the pig house system works:

[0066] When ventilation is performed in winter, the negative pressure fan 6 does not work, and the trench fan 9 is turned on, which will allow air to flow in the pigsty. The air enters the pigsty from the outside through the air filter 2, and the filtered air enters the air delivery pipe from the air inlet 4. The air in the air delivery pipe 5 will be delivered to the bellows, and finally the air is blown out from the bellows pipe 81 and the air duct 82. Since each bellows pipe 81 and the air duct 82 are aimed at a pig house 10, the air can give fresh air to each pig. At the same time, due to the start-up of the trench fan 9, the air will continue to flow downward to the slatted plate 11 and the lower trench. Finally, the turbid air breathed by the pig will be delivered to the sterilization wall 7 by the hook fan 9 in the lower trench 12, and finally discharged from the sterilization wall 7;

[0067] When ventilation is carried out in summer, the negative pressure fan 6 and the floor fan 9 are turned on, and the air conditioner 3 and the air inlet 4 are turned on at the same time. The cooling air of the air conditioner 3 enters from the air inlet 4 and flows to the bellows 8. The cold air flows to the pig house through the bellows pipe 81 and the air duct 82 in the bellows 8, so that the pig house 10 is cooled down. At the same time, the hot air in the pig house 10 rises and passes through the heat exchange pipe in the air delivery pipe 5 and is brought out by the negative pressure fan 6 to realize the air circulation in the pig house 10 and cool the pig house 10. At the same time, the lower ditch 12 can also be ventilated, and the dirty air located at the bottom of the pig house passes through the ditch fan 9 of the lower ditch 12 and is finally discharged through the sterilization wall 7.

[0068] This embodiment also provides a blue ear disease purification scheme for the above-mentioned pig farm, including:

[0069] (I) Introduction of breeds: Introduce enough reserve breeding pigs (aged between 100 and 180 days) and some pregnant sows at one time. The introduced breeding pigs shall be tested for blue ear antigen to ensure that they are negative.

[0070] (ii) Closure: The breeding herd (basic breeding herd and reserve breeding herd) is closed for 6 months, during which time only people can leave but not enter. The reserve breeding herd is raised separately from the basic breeding herd, and breeding herds that are not suitable for breeding and sub-healthy sows carrying blue ear disease are eliminated regularly (the S / P value of blue ear disease detected by IDEXX ELISA kit is higher than 2.0 for two consecutive times, the sows have conjunctivitis, bleeding spots on the back, reproductive disorders, and the stillbirth rate exceeds the standard).

[0071] (III) Unified immunization: The entire closed breeding pig herd and each batch of suckling piglets aged 14 to 28 days are immunized with inactivated blue ear vaccine.

[0072] Immunization program (after the introduction of new breeds): In the first week, the whole breeding herd will be vaccinated with inactivated blue ear vaccine. In the third week, the whole breeding herd will be vaccinated with inactivated blue ear vaccine for the second time. In the sixth week, the reserve sows will be vaccinated with inactivated blue ear vaccine according to the normal immunization program. In the following three months, the inactivated blue ear vaccine will be vaccinated.

[0073] (IV) Biological monitoring:

[0074] (1) Before the reserve breeding pigs enter the herd, blood is collected from each pig for blue ear antibody testing, and antibody-positive pigs are removed from the breeding herd to ensure that the reserve pigs entering the herd are blue ear antibody negative;

[0075] (2) The breeding pig herd is sampled once a week for blue ear antigen testing. If a positive result is found in the mixed test, it will be separated and the pigs with positive blue ear antigen test will be eliminated;

[0076] (3) Blood was collected from each batch of weaned sows and tested for blue ear antibodies using the American IDEXX test kit. Sows with an S / P value of more than 2.0 were eliminated;

[0077] (4) Collect testicular fluid from castrated piglets in the farrowing room for blue ear antigen testing. If the test result is positive, the sow that gave birth to the piglets in the litter is tracked down and eliminated;

[0078] (5) Blood samples were collected from each batch of growing pigs at the 8th and 20th weeks of age to test for PRRSV antibodies.

[0079] a. If the antibody test is positive at the 8th week of age, choose tilmicosin + compound amoxicillin + multivitamin health care for 7 to 10 days. After that, add multivitamin to drinking water during the rotation of the pig herd to relieve stress.

[0080] b. If the antibody test is positive at the 20th week of age, choose tilmicosin + compound amoxicillin + multi-dimensional health care for 7 to 10 days, and give a supplementary injection of blue ear inactivated vaccine.

[0081] c. The feeding of batches of growing pigs shall be carried out under closed management, with all-in and all-out requirements, and the pigs shall be disinfected regularly.

[0082] d. After the batch of live pigs is released or transferred out, the pens should be cleaned thoroughly first → spray disinfected with chlorine-based disinfectants → closed fumigation disinfection for 24 hours → pens should be whitened.

[0083] e. Leave the pens vacant for one week, and take samples from the pens to test for blue ear antigens before bringing in pigs. If the test result is negative, the pigs can be admitted. Otherwise, the pens must be cleaned and disinfected again according to the above process.

[0084] Example 2

[0085] Based on Example 1, this example provides an insulation mortar for use in a pig house system, wherein the insulation mortar is used for the floor and walls of the pig house system, and the insulation mortar is an expanded vitrified microsphere insulation mortar, which uses modified vitrified microspheres as insulation materials.

[0086] The raw material formula of the thermal insulation mortar is: 6 parts of ordinary Portland cement, 8 parts of sand, 15 parts of modified glass microspheres, 0.1 parts of methyl hydroxyethyl cellulose ether, and 12 parts of water.

[0087] The preparation method of modified vitrified microspheres comprises the following steps:

[0088] S1. Pulp rock is crushed and classified to obtain 200 mesh ore sand, and the ore sand is preheated at 100°C for 10 minutes;

[0089] S2. Put the preheated ore sand into a vacuum furnace, heat the vacuum furnace to 900°C at a rate of 2°C / min and keep it for 30 minutes to soften the ore sand partially, then spray ceramic fiber evenly onto the surface of the ore sand for the first time, and continue heating at this temperature for 30 minutes;

[0090] S3, heating the vacuum furnace to 1000°C at a rate of 0.5°C / min to further soften and expand the ore sand. After reaching this temperature, spraying humidified (the amount of humidified water is 2%) ceramic fibers evenly onto the surface of the ore sand for the second time, and continue heating at this temperature for 15 minutes;

[0091] S4, spraying molten paraffin on the surface of the ore obtained in step S3, with the spraying amount being 3% of the mass of the ore, and then adjusting the temperature of the vacuum furnace to 1150° C. to make the ore vitrified and closed-pore, thereby obtaining modified vitrified microspheres.

[0092] The diameter of the ceramic fiber used is 4 μm, the length of the ceramic fiber sprayed for the first time is 0.1 mm, the length of the ceramic fiber sprayed for the second time is 0.4 mm, and the mass ratio of the ceramic fiber sprayed for the first time, the ceramic fiber sprayed for the second time to the pitch rock is 1:2:100.

[0093] The rest is the same as Example 1.

[0094] Example 3

[0095] Based on Example 1, this example provides a wet curtain for a pig house system, and the preparation method of the wet curtain paper used in the wet curtain is:

[0096] A. Sizing and drying: Soak the base paper material in a 30% by mass phenolic resin aqueous solution for 20 minutes, take it out, and dry it at 70°C for 20 minutes;

[0097] Paper cutting and corrugation pressing: The dried base paper is cut according to production requirements, and the cut base paper is pressed into corrugated grooves to obtain a single piece of corrugated paper.

[0098] B. Stack multiple sheets of corrugated paper alternately according to production requirements, and fill the space between adjacent sheets of corrugated paper with temperature-regulating particles (filling amount is 50g / m 2 Single-piece corrugated paper), two adjacent single-piece corrugated paper, and single-piece corrugated paper and temperature-regulating particles are bonded by adhesive; the adhesive is styrene acrylic emulsion.

[0099] C. Curing the adhesive at 110°C for 60 minutes to obtain box-type wet curtain paper, and slicing the box-type wet curtain paper according to production requirements to obtain wet curtain paper.

[0100] The preparation method of the temperature regulating particles comprises:

[0101] Clay and porous metal fiber with a mass ratio of 0.02:1 are evenly dispersed in a vacuum disperser, then evenly mixed with solid phase change material and graphite powder, and then carboxymethyl cellulose and water mixture are added to make 1mm particles. The surface of the obtained particles is sprayed with a mixture of molten PP pellets and porous metal sheets with a mass ratio of 1:0.04, and the temperature-adjusting particles are obtained after cooling. The mass ratio of phase change material, porous metal fiber, graphite powder, carboxymethyl cellulose and water mixture, and PP pellets is 1:0.08:0.03:0.1:0.05. The porous metal fiber and porous metal sheet are both made of iron.

[0102] The porous metal sheet is used after the following pretreatment: the porous metal sheet is placed in boiling water, and then a saturated ferric chloride solution is dripped into it, and the boiling is continued for 20 minutes, and then the water is filtered out and dried, and the pretreatment is completed. The ferric chloride accounts for 5% of the mass of the porous metal sheet.

[0103] The temperature regulating particles are divided into first temperature regulating particles, second temperature regulating particles and third temperature regulating particles. The phase change material in the first temperature regulating particles is paraffin-40 and heptadecane in a mass ratio of 1:0.1, the phase change material in the second temperature regulating particles is decadecanoic acid, heptadecane and polyethylene glycol 1000 in a mass ratio of 1:0.1:0.1, and the phase change material in the third temperature regulating particles is tetradecanol and dodecanol in a mass ratio of 1:1. The phase change temperatures of the phase change materials in the first temperature regulating particles, the second temperature regulating particles and the third temperature regulating particles decrease in sequence.

[0104] The number of sheets of a single corrugated paper is n, the first temperature regulating particles are filled between the 1st to n / 3rd sheets of corrugated paper, the second temperature regulating particles are filled between the (n+1) / 3rd to 2n / 3rd sheets of corrugated paper, and the third temperature regulating particles are filled between the (2n+1) / 3rd to nth sheets of corrugated paper.

[0105] The rest is the same as Example 1.

[0106] Example 4

[0107] This embodiment is a combination of Embodiments 2 and 3.

[0108] Example 5

[0109] This embodiment provides a thermal insulation mortar for a pig house system, which uses modified vitrified microspheres as thermal insulation materials. The preparation method of the modified vitrified microspheres includes the following steps:

[0110] S1. Pulp rock is crushed and classified to obtain 250 mesh ore sand, and the ore sand is preheated at 110°C for 15 minutes;

[0111] S2. Put the preheated ore sand into a vacuum furnace, heat the vacuum furnace to 950°C at a rate of 3°C / min and keep it for 35 minutes to soften the ore sand partially, then evenly spray ceramic fiber onto the surface of the ore sand for the first time, and continue heating at this temperature for 35 minutes;

[0112] S3, heating the vacuum furnace to 1050°C at a rate of 0.8°C / min to further soften and expand the ore sand, and after reaching this temperature, spraying the humidified (the amount of humidified water is 2.5%) ceramic fiber evenly onto the surface of the ore sand for the second time, and continue heating at this temperature for 22 minutes;

[0113] S4, spraying molten paraffin on the surface of the ore obtained in step S3, with the spraying amount being 4% of the mass of the ore, and then adjusting the temperature of the vacuum furnace to 1175° C. to make the ore vitrified and closed-pore, thereby obtaining modified vitrified microspheres.

[0114] The diameter of the ceramic fiber used is 3 μm, the length of the ceramic fiber sprayed for the first time is 0.08 mm, the length of the ceramic fiber sprayed for the second time is 0.35 mm, and the mass ratio of the ceramic fiber sprayed for the first time, the ceramic fiber sprayed for the second time to the pitch rock is 2:3:100.

[0115] This embodiment also provides a wet curtain for a pig house system. The preparation method of the wet curtain paper used in the wet curtain is as described in Example 4, wherein the filling amount of the temperature regulating particles is 75g / m 2 Single piece of corrugated paper.

[0116] The preparation method of the temperature regulating particles comprises:

[0117] Clay and porous metal fiber with a mass ratio of 0.04:1 are evenly dispersed in a vacuum disperser, then evenly mixed with solid phase change material and graphite powder, and then carboxymethyl cellulose and water mixture are added to make 3mm particles. The surface of the obtained particles is sprayed with a mixture of molten PP pellets and porous metal sheets with a mass ratio of 1:0.06, and the temperature-adjusting particles are obtained after cooling. The mass ratio of phase change material, porous metal fiber, graphite powder, carboxymethyl cellulose and water mixture, and PP pellets is 1:0.14:0.045:0.15:0.08.

[0118] The porous metal sheet is used after the following pretreatment: the porous metal sheet is placed in boiling water, and then a saturated ferric chloride solution is dripped into it, and the boiling is continued for 25 minutes, and then the water is filtered out and dried, and the pretreatment is completed. The ferric chloride accounts for 7.5% of the mass of the porous metal sheet.

[0119] The temperature regulating particles are divided into first temperature regulating particles, second temperature regulating particles and third temperature regulating particles. The phase change material in the first temperature regulating particles is paraffin-40 and heptadecane in a mass ratio of 1:0.2, the phase change material of the second temperature regulating particles is decadecanoic acid, heptadecane and polyethylene glycol 1000 in a mass ratio of 1:0.2:1, and the phase change material of the third temperature regulating particles is tetradecanol and dodecanol in a mass ratio of 1:1.5.

[0120] The rest is the same as Example 4.

[0121] Example 6

[0122] This embodiment provides a thermal insulation mortar for a pig house system, which uses modified vitrified microspheres as thermal insulation materials. The preparation method of the modified vitrified microspheres includes the following steps:

[0123] S1. Pulp rock is crushed and classified to obtain 300 mesh ore sand, and the ore sand is preheated at 120°C for 20 minutes;

[0124] S2. Put the preheated ore sand into a vacuum furnace, heat the vacuum furnace to 1000°C at a rate of 4°C / min and keep it for 40 minutes to soften the ore sand partially, then spray ceramic fiber evenly onto the surface of the ore sand for the first time, and continue heating at this temperature for 40 minutes;

[0125] S3, heating the vacuum furnace to 1100°C at a rate of 1°C / min to further soften and expand the ore sand, and after reaching this temperature, spraying humidified (3% water) ceramic fibers evenly onto the surface of the ore sand for the second time, and continue heating at this temperature for 30 minutes;

[0126] S4, spraying molten paraffin on the surface of the ore obtained in step S3, with the spraying amount being 5% of the mass of the ore, and then adjusting the temperature of the vacuum furnace to 1200° C. to make the ore vitrified and closed-pore, thereby obtaining modified vitrified microspheres.

[0127] The diameter of the ceramic fiber used is 2 μm, the length of the ceramic fiber sprayed for the first time is 0.05 mm, the length of the ceramic fiber sprayed for the second time is 0.3 mm, and the mass ratio of the ceramic fiber sprayed for the first time, the ceramic fiber sprayed for the second time to the pitch rock is 3:4:100.

[0128] This embodiment also provides a wet curtain for a pig house system. The preparation method of the wet curtain paper used in the wet curtain is as described in Example 4, wherein the filling amount of the temperature regulating particles is 100g / m 2 Single piece of corrugated paper).

[0129] The preparation method of the temperature regulating particles comprises:

[0130] Clay and porous metal fiber with a mass ratio of 0.06:1 are evenly dispersed in a vacuum disperser, then evenly mixed with solid phase change material and graphite powder, and then carboxymethyl cellulose and water mixture are added to make 5mm particles, and the surface of the obtained particles is sprayed with a mixture of molten PP pellets and porous metal sheets with a mass ratio of 1:0.08, and the temperature-adjusting particles are obtained after cooling. The mass ratio of phase change material, porous metal fiber, graphite powder, carboxymethyl cellulose and water mixture, and PP pellets is 1:0.2:0.06:0.2:0.1.

[0131] The porous metal sheet is used after the following pretreatment: the porous metal sheet is placed in boiling water, and then a saturated ferric chloride solution is dripped into it, and the boiling is continued for 30 minutes, and then the water is filtered out and dried, and the pretreatment is completed. The ferric chloride accounts for 10% of the mass of the porous metal sheet.

[0132] The temperature regulating particles are divided into first temperature regulating particles, second temperature regulating particles and third temperature regulating particles. The phase change material in the first temperature regulating particles is paraffin-40 and heptadecane in a mass ratio of 1:0.3, the phase change material of the second temperature regulating particles is decadecanoic acid, heptadecane and polyethylene glycol 1000 in a mass ratio of 1:0.3:2.0, and the phase change material of the third temperature regulating particles is tetradecanol and dodecanol in a mass ratio of 1:2.

[0133] The rest is the same as Example 4.

[0134] Comparative Example 1

[0135] The difference between this comparative example and Example 2 is that the thermal insulation mortar of the present invention uses ordinary vitrified microspheres as thermal insulation materials.

[0136] Comparative Example 2

[0137] The difference between this comparative example and Example 2 is that the modified glass microspheres are not sprayed into the ceramic fibers during the preparation process, and the following steps are included:

[0138] S1. Pulp rock is crushed and classified to obtain 200 mesh ore sand, and the ore sand is preheated at 100°C for 10 minutes;

[0139] S2. Put the preheated ore into a vacuum furnace, heat the vacuum furnace to 900°C at a rate of 2°C / min and keep it for 60 minutes;

[0140] S3, heating the vacuum furnace to 1000°C at a rate of 0.5°C / min to further soften and expand the ore sand, and maintaining the temperature for 15 minutes;

[0141] S4, spraying molten paraffin on the surface of the ore obtained in step S3, with the spraying amount being 3% of the mass of the ore, and then adjusting the temperature of the vacuum furnace to 1150° C. to make the ore vitrified and closed-pore, thereby obtaining modified vitrified microspheres.

[0142] Comparative Example 3

[0143] The difference between this comparative example and Example 2 is that the modified glass microspheres are not sprayed with ceramic fibers in the preparation step S2. In this case, step S2 is: putting the preheated ore into a vacuum furnace, heating the vacuum furnace to 900°C at a rate of 2°C / min and maintaining it for 60 minutes.

[0144] Comparative Example 4

[0145] The difference between this comparative example and Example 2 is that the modified glass microspheres are not sprayed with ceramic fibers in the preparation step S3. In this case, step S3 is: heating the vacuum furnace to 1000°C at a rate of 0.5°C / min to further soften and expand the ore sand, and maintaining the temperature for 15 minutes after reaching the temperature.

[0146] Comparative Example 5

[0147] The difference between this comparative example and Example 2 is that in the preparation step S3 of the modified glass microspheres, the sprayed ceramic fibers are not humidified.

[0148] Comparative Example 6

[0149] The difference between this comparative example and Example 2 is that in the preparation step S4 of the modified vitrified microspheres, molten paraffin is not sprayed on the surface of the mineral sand.

[0150] Comparative Example 7

[0151] The difference between this comparative example and Example 3 is that the wet curtain paper is not filled with temperature regulating particles during the preparation process.

[0152] Comparative Example 8

[0153] The difference between this comparative example and Example 3 is that the wet curtain paper is completely filled with the first temperature regulating particles during the preparation process.

[0154] Comparative Example 9

[0155] The difference between this comparative example and Example 3 is that the wet curtain paper is completely filled with the second temperature regulating particles during the preparation process.

[0156] Comparative Example 10

[0157] The difference between this comparative example and Example 3 is that the wet curtain paper is completely filled with the third temperature regulating particles during the preparation process.

[0158] Comparative Example 11

[0159] The difference between this comparative example and Example 3 is that, during the preparation of the wet curtain paper, the first temperature regulating particles are replaced by the second temperature regulating particles.

[0160] Comparative Example 12

[0161] The difference between this comparative example and Example 3 is that, during the preparation of the wet curtain paper, the first temperature regulating particles are replaced by third temperature regulating particles.

[0162] Comparative Example 13

[0163] The difference between this comparative example and Example 3 is that, during the preparation of the wet curtain paper, the second temperature regulating particles are replaced by the first temperature regulating particles.

[0164] Comparative Example 14

[0165] The difference between this comparative example and Example 3 is that, during the preparation of the wet curtain paper, the second temperature regulating particles are replaced by third temperature regulating particles.

[0166] Comparative Example 15

[0167] The difference between this comparative example and Example 3 is that, during the preparation of the wet curtain paper, the third temperature regulating particles are replaced by the first temperature regulating particles.

[0168] Comparative Example 16

[0169] The difference between this comparative example and Example 3 is that, during the preparation of the wet curtain paper, the third temperature regulating particles are replaced by the second temperature regulating particles.

[0170] Comparative Example 17

[0171] The difference between this comparative example and Example 3 is that during the preparation of the wet curtain paper, the phase change material in the first temperature regulating particles only includes paraffin-40.

[0172] Comparative Example 18

[0173] The difference between this comparative example and Example 3 is that during the preparation of the wet curtain paper, the phase change material in the first temperature regulating particles only includes heptadecane.

[0174] Comparative Example 19

[0175] The difference between this comparative example and Example 3 is that, during the preparation of the wet curtain paper, the phase change material in the second temperature regulating particles does not include deca-acid.

[0176] Comparative Example 20

[0177] The difference between this comparative example and Example 3 is that during the preparation of the wet curtain paper, the phase change material in the second temperature regulating particles does not include heptadecane.

[0178] Comparative Example 21

[0179] The difference between this comparative example and Example 3 is that during the preparation of the wet curtain paper, the phase change material in the second temperature regulating particles does not include polyethylene glycol 1000.

[0180] Comparative Example 22

[0181] The difference between this comparative example and Example 3 is that during the preparation of the wet curtain paper, the phase change material in the third temperature regulating particles only includes tetradecanol.

[0182] Comparative Example 23

[0183] The difference between this comparative example and Example 3 is that during the preparation of the wet curtain paper, the phase change material in the third temperature regulating particles only includes dodecyl alcohol.

[0184] Comparative Example 24

[0185] The difference between this comparative example and Example 3 is that, during the preparation of the wet curtain paper, no porous metal fiber is added.

[0186] Comparative Example 25

[0187] The difference between this comparative example and Example 3 is that no clay is added during the preparation of the wet curtain paper.

[0188] Comparative Example 26

[0189] The difference between this comparative example and Example 3 is that, during the preparation of the wet curtain paper, no porous metal sheet is added.

[0190] Comparative Example 27

[0191] The difference between this comparative example and Example 3 is that, during the preparation of the wet curtain paper, the porous metal sheet is not pretreated.

[0192] 1. Blue ear disease purification effect of the present invention

[0193] According to the scheme of Example 4 of the present invention, a large-scale pig farm with 1,500 sows was purified for blue ear disease. The purification was implemented from July 2021, and the antibody was completely negative in the sampling test in August 2022. The antibody negative results (in principle, antibody negative means antigen negative, and the antigen test results are omitted here) are shown in Table 1 below. Before the present invention, the traditional blue ear disease purification scheme usually took more than 2 years.

[0194] Table 1 Results of porcine blue ear disease antibody test (August 2022)

[0195]

[0196]

[0197] From the above results, it can be seen that the blue ear disease purification scheme for pig farms of the present invention can effectively purify blue ear disease in pigs, and compared with traditional methods, it can significantly shorten the purification time, realize double-negative pig groups as early as possible, and increase pig farm profits.

[0198] 2. Temperature and humidity environmental parameters of the pig house system of the pig farm of the present invention

[0199] In order to characterize the influence of the thermal insulation mortar and wet curtain paper of the present invention on the environmental parameters of the pig house system, 6 fattening pig houses in a pig farm are selected and set up with the pig house systems of Examples 1 to 6 of the present invention, respectively, wherein the air conditioners in the pig house systems of Examples 1 and 2 are turned on, and the air conditioners in Examples 3 to 6 are turned off. The 24-hour temperature and humidity in the house are monitored on the same day, and evaluated according to the national standard GB / T 17824.3-2008 (Environmental parameters and environmental management of large-scale pig farms), and the results are shown in Table 2.

[0200] Table 2

[0201]

[0202] As can be seen from Table 2 above, the pig house systems in Examples 1 to 6 of the present invention can all control the temperature in the house within a comfortable range, and the temperature fluctuation is between 1 and 4°C, and the temperature stability is good. In particular, in Examples 4, 5, and 6, the temperature fluctuation is only 1°C, and the humidity is also within the comfortable range, with a humidity fluctuation of only 3 to 4%, and the temperature and humidity are relatively stable.

[0203] Among them, Example 1 only uses the air conditioning system to adjust the temperature. Although its temperature is within the comfortable range, its humidity is low and deviates from the comfortable range of humidity. Dry air is not conducive to the growth of pigs. Example 2 uses an air conditioning system combined with thermal insulation mortar for temperature adjustment. Compared with Example 1, the temperature fluctuation is slightly reduced, and the humidity is slightly increased to approach the comfortable range. Example 3 does not use an air conditioning system, but only uses wet curtains for control. Compared with Example 1, its temperature fluctuation is slightly increased. Although the humidity is increased, it deviates from the comfortable range of humidity. After using thermal insulation mortar combined with wet curtains in Examples 4, 5, and 6, the temperature and humidity are both within the comfortable range, and the range fluctuation is small. The effect is not worse than air conditioning and is energy-saving and environmentally friendly, which is beneficial to the healthy growth of pigs.

[0204] 3. Performance parameters of the thermal insulation mortar of the present invention

[0205] According to the national standard GB / T 26000-2010 (expanded vitrified microsphere thermal insulation mortar), the thermal insulation mortars obtained in Examples 2, 5, 6 of the present invention and Comparative Examples 1 to 6 were tested for their performance. The results are shown in Table 3.

[0206] Table 3

[0207]

[0208] It can be seen from the results in Table 3 that, compared with Comparative Examples 1 to 6, the thermal insulation mortar of the present invention has improved strength performance and thermal conductivity after using modified vitrified microspheres, and is suitable for the walls or floors of pig house systems, with good thermal insulation effect.

[0209] 4. The cooling effect of the wet curtain of the present invention on the pig house system

[0210] The wet curtain of the present invention can be used in summer (the air conditioning system is turned off when the wet curtain is used). Wet curtain paper is prepared according to the method of Example 3 and Comparative Examples 7 to 27, and then made into wet curtains of the same specification, which are applied to the pig house system under the same water supply. The temperature change in the pig house of the embodiment is detected, and the maximum temperature drop value within 12 hours is recorded, which is recorded as ΔT max , and record the time when ΔT is reached max Time required to reach ΔT max The maximum temperature fluctuation after the test is shown in Table 4.

[0211] Table 4

[0212]

[0213]

[0214] It can be seen from Table 4 above that after the wet curtain of the present invention is applied to the pig house system, the temperature in the house is reduced by 17°C in 10 minutes, the cooling effect is obvious, and the temperature fluctuation in the house is small, only 2°C, and the temperature control is relatively stable.

[0215] Compared with Example 3, Comparative Examples 7 to 27 respectively changed the filling method and preparation method of the temperature regulating particles, and ultimately the cooling effect was reduced and the temperature fluctuation was also large.

[0216] The present invention provides a pig farm, which, in order to improve the environmental parameters of the pig house system in the pig farm, can effectively improve the temperature and humidity in the pig house to maintain them at a comfortable level through the application of a precise vertical ventilation system, thermal insulation mortar, and temperature-regulating wet curtains, and is energy-saving and environmentally friendly; and then combined with the blue ear disease purification scheme of the present invention, it can effectively achieve the purification of blue ear disease in pigs and shorten the purification time.

[0217] It is worth noting that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pig farm, comprising: The fattening area, the breeding area and the nursery area are characterized in that: the breeding area and the fattening area are respectively located on both sides of the factory area, the nursery area is arranged inside the fattening area, a disinfection center is arranged inside the breeding area, a central cleaning room is arranged on the right side of the disinfection center, and a gestation house 1, a delivery house 1, a gestation house 2, and a delivery house 2 are arranged below the central cleaning room in sequence, a reserve room is arranged on the left side of the gestation house 1, a vaccine pharmacy is arranged below the reserve room, a function room is arranged on the right side of the vaccine pharmacy, a disinfection center is arranged inside the fattening area, and the disinfection center A central washing room is arranged on the lower right side, and fattening house 1 and fattening house 2 are arranged below the central washing room in sequence. Nursery area 1 and nursery area 2 are arranged far to the left of fattening house 1. Fattening house 3 and fattening house 4 are arranged below fattening house 1 and fattening house 2. Fattening house 5 and fattening house 6 are arranged below fattening house 3 and fattening house 4. A functional room is arranged on the left side of the fattening house group. The breeding area is 200 meters away from the nursery area, and the nursery area is 50 meters away from the fattening area. The fattening area, breeding area and nursery area use the same ventilation system; The pig house system in a pig farm comprises: an insulation door (1), an air filter (2), an air conditioner (3), an air inlet (4), an air delivery duct (5), a negative pressure fan (6), a sterilization wall (7), a bellows (8), a trench fan (9), a pig house (10), a slatted plate (11), and a lower trench (12), wherein the insulation door (1) is located below the air inlet (4), the air filter (2) is located on the opposite side of the insulation door (1), an air conditioner (3) is installed above the air filter (2), the air conditioner (3) is located on the opposite side of the air inlet (4), and the air delivery duct (5) is connected to the air filter (2). The air inlet (4) is connected, a bellows (8) is connected below the air delivery duct (5), a heat exchange duct is provided on the air delivery duct (5), a negative pressure fan (6) is provided on the right side of the air delivery duct (5), a sterilization wall (7) is installed on the right side of the negative pressure fan (6), the pig house (10) is located below the bellows (8), a slatted plate (11) is provided below the pig house (10), a lower trench (12) is provided below the slatted plate (11), a trench fan (9) is provided on the right side of the lower trench (12), and a pipeline connected to the sterilization wall is provided on the right side of the trench fan (9); The structure of the air filter (2) is as follows: the first layer is a 304 stainless steel 20-mesh mosquito-proof net, the second layer is a non-woven fabric of 250 g per square meter, the third layer is a primary filter net, and the fourth layer is a sub-high efficiency filter; the bellows (8) comprises a bellows pipe (81) and an air duct (82); the bellows pipe (81) is made of aluminum-magnesium-manganese material, an aluminum-magnesium-manganese plate is arranged in the air duct (82), the bellows pipe (81) is connected to the aluminum-magnesium-manganese plate in the air duct (82), and each of the bellows (8) is individually directed to a pig house (10); The pig house system adopts thermal insulation mortar, which is an expanded vitrified microsphere thermal insulation mortar, and uses modified vitrified microspheres as thermal insulation materials. The preparation method of the modified vitrified microspheres includes the following steps: S1. Pulp rock is crushed and classified to obtain 200-300 mesh ore sand, and the ore sand is preheated at 100-120°C for 10-20 minutes; S2. Put the preheated ore sand into a vacuum furnace, heat the vacuum furnace to 900-1000°C at a rate of 2-4°C / min and keep it for 30-40min to soften the ore sand part, then spray ceramic fiber evenly on the surface of the ore sand for the first time, and continue heating at this temperature for 30-40min; S3, heating the vacuum furnace to 1000-1100°C at a rate of 0.5-1°C / min to further soften and expand the ore sand, and after reaching this temperature, spraying the humidified ceramic fiber evenly onto the surface of the ore sand for the second time, and continue heating at this temperature for 15-30 minutes; S4, spraying molten paraffin on the surface of the mineral sand obtained in step S3, and adjusting the temperature of the vacuum furnace to 1150-1200° C. to make the mineral sand vitrified and closed-pore, thereby obtaining modified vitrified microspheres; The diameter of the ceramic fiber is 2-4 μm, the length of the ceramic fiber sprayed for the first time is 0.05-0.1 mm, the length of the ceramic fiber sprayed for the second time is 0.3-0.4 mm, the mass ratio of the ceramic fiber sprayed for the first time, the ceramic fiber sprayed for the second time and the pitch rock is (1-3): (2-4): 100, the amount of water humidified in the ceramic fiber sprayed for the second time in step S3 is 2-3%, and the amount of molten paraffin sprayed in step S4 is 3-5% of the mass of the ore obtained in step S3; The pig house system adopts a wet curtain, and the preparation method of the wet curtain paper used in the wet curtain is: A. Take the base paper material and obtain a single piece of corrugated paper after sizing, drying, cutting and corrugating; B. Stack multiple single sheets of corrugated paper in an interlaced manner according to production requirements, fill the space between adjacent single sheets of corrugated paper with temperature-regulating particles, and bond two adjacent single sheets of corrugated paper, and between the single sheets of corrugated paper and the temperature-regulating particles, by adhesive; C. After the adhesive is cured, a box-type wet curtain paper is obtained, and the box-type wet curtain paper is sliced ​​according to production requirements to obtain wet curtain paper; The filling amount of the temperature regulating particles is 50 to 100 g / m 2 A single piece of corrugated paper, wherein the method for preparing the temperature regulating particles comprises: The clay and porous metal fiber are dispersed evenly in a vacuum disperser, and then mixed evenly with a solid phase change material and graphite powder, and then a mixture of carboxymethyl cellulose and water is added to make 1-5 mm particles, and the surface of the obtained particles is sprayed with a mixture of molten PP pellets and porous metal sheets, and the temperature-adjusting particles are obtained after cooling; The porous metal sheet is used after the following pretreatment: the porous metal sheet is placed in boiling water, and then a saturated ferric chloride solution is dripped into it, and the boiling is continued for 20 to 30 minutes, and then the water is filtered out and dried, and the pretreatment is completed; The temperature regulating particles are divided into first temperature regulating particles, second temperature regulating particles and third temperature regulating particles. The phase change material in the first temperature regulating particles is paraffin-40 and heptadecane in a mass ratio of 1: (0.1-0.3), the phase change material in the second temperature regulating particles is decadecanoic acid, heptadecane and polyethylene glycol 1000 in a mass ratio of 1: (0.1-0.3): (0.1-2.0), and the phase change material in the third temperature regulating particles is tetradecanol and dodecanol in a mass ratio of 1: (1-2); The number of sheets of a single corrugated paper is n, the first temperature regulating particles are filled between the 1st to n / 3rd sheets of corrugated paper, the second temperature regulating particles are filled between the (n+1) / 3rd to 2n / 3rd sheets of corrugated paper, and the third temperature regulating particles are filled between the (2n+1) / 3rd to nth sheets of corrugated paper; The mass ratio of the clay to the porous metal fiber is (0.02-0.06):1, the mass ratio of the phase change material, the porous metal fiber, the graphite powder, the carboxymethyl cellulose and the water mixture, and the PP pellets is 1:(0.08-0.2):(0.03-0.06):(0.1-0.2):(0.05-0.1), the mass ratio of the PP pellets to the porous metal sheet is 1:(0.04-0.08), the porous metal fiber and the porous metal sheet are made of iron, aluminum or copper, and the ferric chloride accounts for 5-10% of the mass of the porous metal sheet.

2. A method for purifying blue ear disease in a pig farm as claimed in claim 1, characterized in that: It includes introduction, herd closure, unified immunization and biological monitoring, and the biological monitoring includes: (1) Before the reserve breeding pigs enter the herd, blood is collected from each pig for blue ear antibody testing. Antibody-positive pigs are removed from the breeding herd to ensure that the reserve pigs entering the herd are blue ear antibody-negative; (2) The breeding pig herd is sampled and tested for blue ear antigen once a week. If a positive result is found in the mixed test, it will be tested separately. The pigs with positive blue ear antigen test will be eliminated after being found. (3) Blood is collected from each batch of weaned sows for blue ear antibody testing, and sows with an S / P value of more than 2.0 are eliminated; (4) Collect testicular fluid from castrated piglets in the farrowing room for blue ear antigen testing. If the test result is positive, the sow that gave birth to the piglets in the litter will be tracked down and eliminated; (5) Blood samples are collected from each batch of growing pigs at the 8th and 20th weeks of age to test for blue ear antibodies.

Images