Feeding method for preventing and controlling African swine fever

Abstract

The invention discloses a breeding method for preventing and controlling African swine fever, which comprises the following feeding steps: (1) the average temperature of the current week is 1t; when the temperature is 10 DEG C, adding 2-5kg / ton of Lanhua Weizheng and 2-5kg / ton of ephedra decoction traditional Chinese medicine preparation into the basal feed for feeding together; (2) when the average temperature of the week is 10-25 DEG C, adding 2-5kg / ton of a traditional Chinese medicine preparation containing radix astragali and radix acanthopanacis semticosi into the basal feed for feeding together, wherein the traditional Chinese medicine preparation containing radix astragali and radix acanthopanacis semticosi is 2-5kg / ton; (3) current-week average temperature gt; when the temperature is 25 DEG C, adding 2-5kg / ton of Lanhuixianglian traditional Chinese medicine preparation and 2-5kg / ton of radix gentianae liver purging decoction traditional Chinese medicine preparation into the basal feed for feeding together. Under different air temperature conditions, different traditional Chinese medicine preparations (ephedra decoction, radix astragali seu hedysari, acanthopanax root and radix gentianae liver purging decoction) are used in a warm and stationary matching manner, the antiviral efficacy is multiplied, the disease resistance of pigs can be obviously enhanced, ASF occurrence can be prevented and controlled, and the non-pestilence prevention effect is stable.

Description

Technical Field

[0001] The present invention relates to the technical field of pig breeding, and particularly to a breeding method for preventing and controlling African swine fever. Background Art

[0002] African swine fever (ASFV) is a highly contagious disease of domestic pigs and wild boars caused by infection with African swine fever virus (ASF), which can lead to the death of infected pigs.

[0003] Controlling the source of infection, cutting off the transmission route, and protecting susceptible animals are the basic principles for formulating prevention and control measures for infectious diseases. The common methods for protecting susceptible animals are vaccination and drug treatment. However, neither the vaccine nor the drug for controlling African swine fever has been successfully developed. Under the current conditions, the effective way to control African swine fever can only start from biosafety, control the source of infection, and use some traditional Chinese medicine preparations to enhance the pigs' own ability to resist the virus. Even if there are pigs carrying the virus, few symptoms will appear.

[0004] The main food for raising pigs is corn, which comes from thousands of households' fields. It contains a large amount of dust and virus-carrying pests (there are 383 species of stored grain pests in China, including 242 species in the class Insecta and 141 species of mites), and various pests are also carriers of ASF virus. The general method for removing pests from corn in storage is to fumigate with aluminum phosphide and various insecticides. However, the result of this fumigation will leave a large amount of fumigation drug residues, causing great harm to the health of pigs.

[0005] Regarding biosafety, it is not difficult to understand. However, in the practice of pig breeding production, most enterprises (pig farmers) only do a lot of work in closed management and environmental disinfection, and few pig breeding enterprises carry out purification treatment on corn.

[0006] The basic principle of controlling ASF through some additives is that when the change range of the breeding environment (such as temperature) is relatively large, due to stress response, the disease resistance of pigs is poor, and some pigs quickly show ASF symptoms. It is feasible to enhance the resistance of pigs and reduce the number of diseased pigs through the application of some specific traditional Chinese medicine preparations, but the effect of preventing African swine fever is unstable. Summary of the Invention

[0007] In order to make up for the defects of the existing technology and solve the technical problem that although traditional specific traditional Chinese medicine preparations can enhance the resistance of pigs and reduce the number of diseased pigs to a certain extent, the effect of preventing African swine fever is unstable, the present invention provides a breeding method for preventing and controlling African swine fever.

[0008] The technical problem to be solved by the present invention is realized through the following technical solutions: A breeding method for preventing and controlling African swine fever, which includes a feeding step, and includes: ① When the weekly average temperature < 10°C, add 2 - 5 kg / ton of Lanyuan Zhuwenjing and 2 - 5 kg / ton of Mahuang Decoction traditional Chinese medicine preparation to the basic feed and feed them together; ② When the weekly average temperature is 10°C - 25°C, add 2 - 5 kg / ton of Lanyuan Zhuwenjing and 2 - 5 kg / ton of Huangqi Ciciwu traditional Chinese medicine preparation to the basic feed and feed them together; ③ When the weekly average temperature > 25°C, add 2 - 5 kg / ton of Lanyuan Zhuwenjing and 2 - 5 kg / ton of Longdan Xiegan Decoction traditional Chinese medicine preparation to the basic feed and feed them together.

[0009] In the present invention, the preparation method of the Lanyuan Zhuwenjing is as follows: Weigh taurine, L - ascorbic acid, maggot protein, and glucose oxidase respectively, mix them in a weight ratio of (5 - 10):(0.5 - 1):(1 - 5):(0.1 - 0.5), crush them, sieve them, and bag them for standby.

[0010] Taurine (taurine, Tau) is a semi - essential amino acid, widely distributed in various tissues and important organs of animals. It is the most abundant free amino acid in the body. Since taurine was isolated from bovine bile in 1827, the first literature reporting the physiological function of taurine appeared in 1975. The synthesis of taurine in tissue cells is insufficient and it must rely on external transport into the blood for intake. Research shows that taurine has the functions of promoting intestinal absorption and improving feed utilization rate.

[0011] Vitamin C, also known as ascorbic acid, has important functions such as enhancing the body's disease - resistance ability, promoting growth and development, improving immunity, and preventing and treating various diseases. In recent years, vitamin C has been widely used in the prevention and treatment of infectious diseases and achieved remarkable results.

[0012] Maggot protein, rich in antibacterial peptides, plays a very important immunomodulatory role in the immune system. They are not only immune factors of body cells, but also have the biological activities of avidin, lectin, and opsonin. Through rapid reaction, antibacterial peptides agglutinate exogenous pathogenic microorganisms at the site of infection, and then through the connection and mobilization of avidin and opsonin, the entire body's immune system is fully mobilized to fight against exogenous pathogenic microorganisms.

[0013] Glucose oxidase: Most of the beneficial bacteria in the pig intestine are anaerobic bacteria, while the harmful bacteria are aerobic bacteria. Glucose oxidase consumes free radicals and the hydrogen peroxide generated can play a role in antiviral and harmful bacteria, enabling the continuous reproduction of beneficial anaerobic bacteria in the pig body, while harmful aerobic pathogenic bacteria such as... In the presence of glucose oxidase, due to the formation of gluconic acid, it helps to activate immune cells in piglets in an acidic environment, thereby enhancing the immune resistance of piglets and effectively improving the disease - resistance and immune function of pigs.

[0014] The main function of Lan Yuan Zhu Wen Jing is to resist Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) and Porcine circovirus (PCV). When PRRSV and PCV are purified, African Swine Fever (ASF) can also be better controlled.

[0015] In the present invention, the preparation method of the Mahuang Decoction traditional Chinese medicine preparation is as follows: Weigh Ephedra, Cinnamon Twig, Licorice Root, and Apricot Kernel respectively according to the weight ratio of (90 - 110):(60 - 80):(30 - 50):(350 - 370), mix them, crush, sieve, and store in bags for later use.

[0016] In the present invention, the preparation method of the Astragalus membranaceus - Eleutherococcus senticosus traditional Chinese medicine preparation is as follows: Weigh Astragalus membranaceus and Eleutherococcus senticosus respectively according to the weight ratio of (10 - 20):(5 - 10), mix them, crush, sieve, and store in bags for later use.

[0017] The effects of Astragalus membranaceus on the immune system are very extensive. It can not only enhance humoral immunity and cellular immunity, but also promote the generation of immune factors and strengthen the function of phagocytes. In particular, the effect of Astragalus polysaccharide is significantly better than that of saponins and flavonoids. Astragalus polysaccharide can significantly improve the ability of immune - suppressed dogs to produce interferon - gamma (IFN - γ) and interleukin - 2 (IL - 2), thereby enhancing their immune function.

[0018] Eleutherococcus senticosus also has significant immunomodulatory effects. Its polysaccharide has a good effect on the reconstruction of B - cell function and can reduce or alleviate the leukopenia caused by cyclophosphamide. Eleutherococcus senticosus polysaccharide can generate interferon and is an inducer of interferon.

[0019] The compound drug of Astragalus membranaceus - Eleutherococcus senticosus can improve the immunity of pigs, enhance the resistance in the body, and reduce the occurrence of diseases. It is particularly effective in preventing and treating respiratory infectious diseases such as colds.

[0020] In the present invention, the preparation method of the Longdan Xiegan Decoction traditional Chinese medicine preparation is as follows: Weigh Gentiana scabra, Scutellaria baicalensis, Gardenia jasminoides, Alisma orientale, Akebia quinata, Plantago asiatica, Angelica sinensis, Rehmannia glutinosa, Bupleurum chinense, and Glycyrrhiza uralensis Fisch. respectively according to the weight ratio of (5 - 10):(10 - 15):(10 - 15):(15 - 20):(10 - 15):(10 - 15):(1 - 5):(10 - 15):(5 - 10):(5 - 10), mix them, crush, sieve, and store in bags for later use.

[0021] In the present invention, the mesh number of the sieve is 60 - 80 meshes.

[0022] In the present invention, the corn in the basic feed is pretreated as follows: Store it in the isolation warehouse outside the feed processing workshop or in the silo for more than 15 days. Install a circulating ventilation duct in the silo to ensure continuous ventilation for 24 hours a day, and continuously ventilate by mechanical pressure for 15 days.

[0023] The corn silo is equipped with a circulation ventilation system and is turned on 24 hours a day to continuously ventilate the corn in the silo for 15 consecutive days. During the mechanical ventilation process, the pressure generated by the fan equipment is used to send low-temperature and low-humidity air from the outside into the corn pile, and the dirty air with high temperature, high humidity, and high dust (including various virus-carrying insects) is extracted. There are two functions: First, it promotes the heat and moisture exchange between the gas inside and outside the corn pile, which significantly reduces the temperature and moisture of the corn pile and balances the temperature and moisture of the corn pile. It delays the increase of corn fat and acid value and prevents corn from mildewing. Second, it can blow away a large amount of dust and insects containing a large amount of viruses, further purify the corn, and prevent viruses from entering the pig farm through corn raw materials. Corn accounts for 60-80%. As long as the corn is fresh and free of mildew and toxic diseases and insects, it can further ensure the health of pigs and prevent ASF from occurring.

[0024] In the present invention, the feeding method is at least one of sow feeding, piglet feeding, nursery pig feeding and fattening pig feeding.

[0025] The present invention also includes a pig house care step.

[0026] The present invention also includes a regular vaccination step.

[0027] Compared with the prior art, the present invention has the following beneficial effects: The compatibility of Chinese medicine has four properties: "cold, cool, warm and hot". The principle of application is: "treat cold with hot medicine, treat heat with cold medicine". We found that in pig production practice, most breeding companies (farmers) did not use different Chinese medicine preparations under different temperature conditions according to the "cold, cool, warm and hot" characteristics of Chinese medicine, resulting in unstable anti-ASF effects. Under different temperature conditions, Lanyuan Zhu Wenjing is used in combination with different Chinese medicine preparations (Mahuang Decoction, Huangqi Ciwujia, Longdan Xiegan Decoction), and its antiviral efficacy is doubled, which can significantly enhance the disease resistance of pigs, prevent and control the occurrence of ASF, and have a stable anti-ASF effect.

[0028] There are two kinds of additives used in this application: one is pure Chinese medicine preparation; the other is several conventional raw materials (taurine, L-ascorbic acid, fly maggot protein, glucose oxidase). These materials have common characteristics: safety, no toxic side effects, no palatability problems, and have the effects of strengthening the body and expelling evil, with definite efficacy and green safety.

[0029] The present invention installs a circulating ventilation system in the corn silo and keeps it on for 24 hours a day for ventilation. It continuously injects air for 15 days, which can not only reduce the temperature of the corn pile, reduce the moisture of the corn, and maintain the freshness and high quality of the corn, but also effectively remove dust and insects carrying various viruses in the corn, ensure the physical health of the pig herd, and prevent the occurrence of ASF. DETAILED DESCRIPTION

[0030] Unless otherwise specified, the raw materials and equipment used in the present invention are common raw materials and equipment in the art; unless otherwise specified, the methods used in the present invention are conventional methods in the art.

[0031] Unless otherwise specified, the meanings of the terms in this specification are the same as those generally understood by those skilled in the art. However, in case of conflict, the definitions in this specification shall prevail.

[0032] As used herein, "comprising", "including", "containing", "having" or other variants are intended to cover non-closed inclusion, and no distinction is made between these terms. The term "including" means that other steps and components can be added without affecting the final result. The term "including" also includes the terms "consisting of" and "consisting essentially of". The compositions and methods / processes of the present invention comprise, consist of, and consist essentially of the essential elements and limitations described herein, as well as any additional or optional ingredients, components, steps or limitations described herein.

[0033] All numerical values or expressions related to component amounts, process conditions, etc. used in the specification and claims shall be understood to be modified by "about" in all cases. All ranges related to the same component or property include the endpoints, and these endpoints can be combined independently. Since these ranges are continuous, they include every numerical value between the minimum and maximum values. It should also be understood that any numerical range cited in this application is expected to include all sub-ranges within that range.

[0034] The present invention will be described in detail below with reference to the embodiments. The embodiments are only the preferred embodiments of the present invention and do not limit the present invention. Unless otherwise specified herein, the solution concentrations are all volume concentrations.

[0035] Example 1 In 2021, there were 400 sows in the pig farm of Shandong Xibei Aizhu Agricultural and Animal Husbandry Technology Co., Ltd. (hereinafter referred to as "Xibei Aizhu Pig Farm"). When pig farms across the country were deeply affected by the ravages of ASF, Xibei Aizhu Pig Farm adopted a feeding method for preventing and controlling African swine fever, which mainly included the following steps: ① When the weekly average temperature < 10°C, add 2 kg / ton of Lanyuan Zhuwenjing and 2 kg / ton of Mahuang Decoction traditional Chinese medicine preparation to the basic feed and feed them together; ② When the weekly average temperature is 10°C - 25°C, add 2 kg / ton of Lanyuan Zhuwenjing and 2 kg / ton of Huangqi Cijia traditional Chinese medicine preparation to the basic feed and feed them together; ③ When the weekly average temperature > 25°C, add 2 kg / ton of Lanyuan Zhuwenjing and 2 kg / ton of Longdan Xiegan Decoction traditional Chinese medicine preparation to the basic feed and feed them together.

[0036] The feeding method adopted by Xibei Aizhu Pig Farm for preventing and controlling African swine fever mainly has the following characteristics: 1. After the corn first enters the silo, start the internal circulation fan of the silo immediately to ventilate the silo 24 hours a day. Start using it in the basic feed 15 days after storage.

[0037] 2. Add Lanyuan Zhu Wenjing + Chinese medicine preparations to the basic feed (depending on the temperature, choose Mahuang Tang, Huangqi Ciwujia, Longdan Xiegan Tang). The preparation methods of Lanyuan Zhu Wenjing, Mahuang Tang, Huangqi Ciwujia, Longdan Xiegan Tang are as follows: ① Preparation method of Lanyuan Zhuwen: Weigh taurine, L-ascorbic acid, fly maggot protein and glucose oxidase respectively in a weight ratio of 5:0.5:0.5:0.05, mix them and grind them. Sieve through 80-100 mesh to obtain Lanyuan Zhuwenjing, which is then bagged for later use.

[0038] ② Preparation method of Chinese medicine Mahuang Decoction: weigh ephedra extract, cinnamon twig extract, licorice extract, and almond extract in a weight ratio of 90:60:30:350, mix and crush, sieve through 60-80 mesh to form the Mahuang Decoction Chinese medicine preparation, and bag it for later use.

[0039] ③ The preparation method of the Chinese medicine preparation of Astragalus and Acanthopanax is as follows: weigh the Astragalus extract and Acanthopanax extract in a weight ratio of 10:5, mix them and then grind them, sieve them through 60-80 mesh to obtain the Chinese medicine preparation of Astragalus and Acanthopanax, and bag them for later use.

[0040] ④ Preparation method of the Chinese medicine preparation Longdan Xiegan Decoction: weigh gentian extract, scutellaria extract, gardenia extract, oriental rhizome extract, akebia extract, plantain extract, angelica extract, raw rehmannia extract, bupleurum extract, and raw licorice extract in a weight ratio of 5:10:10:10:15:10:10:1:10:5:5, mix and grind, sieve through 60-80 mesh to make the Longdan Xiegan Decoction Chinese medicine preparation, and bag it for later use.

[0041] In terms of ASF prevention and control, in addition to the two main features mentioned above, there will be other conventional biosafety measures, such as: fully closed management, timely environmental sanitation and equipment disinfection, regular vaccination, etc.

[0042] 3. Feed formula design for Xibei Aizhu pig farm in 2021 (see Table 1) Table 1. Feed formula of Xibei Aizhu pig farm In 2021, the production performance of Xibei Aizhu pig farm is shown in Table 2.

[0043] Table 2. Production performance of Xibei Aizhu pig farm in 2021 (400 sows in stock) As can be seen from Table 2, the pig survival rate of Xibei'ai pig farms reached 89.4% in 2021, and the feed-to-weight ratio of market pigs was 2.83:1. In 2021, the survival rate of pigs born in most pig farms was less than 85%, and the feed-to-weight ratio was higher than 3.0:1. The feeding method in Example 1 performed excellently.

[0044] Example 2 In 2022, there were 450 sows in stock in Xibei'ai pig farms. Pig farms across the country were still under the shadow of ASF. Xibei'ai pig farms adopted a feeding method for preventing and controlling African swine fever, which mainly included the following steps: ① When the weekly average temperature < 10°C, add 3 kg / ton of Lanyuanzhuwenjing and 3 kg / ton of Mahuang Decoction traditional Chinese medicine preparation to the basic feed and feed them together; ② When the weekly average temperature is 10°C - 25°C, add 3 kg / ton of Lanyuanzhuwenjing and 3 kg / ton of Huangqi Cijia traditional Chinese medicine preparation to the basic feed and feed them together; ③ When the weekly average temperature > 25°C, add 3 kg / ton of Lanyuanzhuwenjing and 3 kg / ton of Longdan Xiegan Decoction traditional Chinese medicine preparation to the basic feed and feed them together.

[0045] The feeding method adopted by Xibei'ai pig farms for preventing and controlling African swine fever mainly has the following characteristics: 1. After the corn enters the silo, immediately start the internal circulation fan in the silo for non-stop ventilation for 24 hours a day, and start using it 15 days after storage.

[0046] 2. Add Lanyuanzhuwenjing + traditional Chinese medicine preparation (select Mahuang Decoction, Huangqi Cijia, Longdan Xiegan Decoction according to different temperatures) to the feed. The preparation methods of Lanyuanzhuwenjing, Mahuang Decoction, Huangqi Cijia, and Longdan Xiegan Decoction are as follows: ① Preparation method of Lanyuanzhuwen: Weigh taurine, L-ascorbic acid, fly maggot protein, and glucose oxidase respectively, mix them in a weight ratio of 10:0.3:0.3:0.05, crush them, and sieve them through 80 - 100 meshes. This is Lanyuanzhuwenjing, which is bagged and reserved for use.

[0047] ② Preparation method of traditional Chinese medicine Mahuang Decoction: Weigh ephedra extract, cinnamon twig extract, licorice extract, and almond extract, mix them in a weight ratio of 100:65:40:400, crush them, and sieve them through 60 - 80 meshes. This is the Mahuang Decoction traditional Chinese medicine preparation, which is bagged and reserved for use.

[0048] ③ Preparation method of Huangqi Cijia traditional Chinese medicine preparation: Weigh astragalus extract and acanthopanax senticosus extract, mix them in a weight ratio of 15:6, crush them, and sieve them through 60 - 80 meshes. This is the Huangqi Cijia traditional Chinese medicine preparation, which is bagged and reserved for use.

[0049] ④ Preparation method of traditional Chinese medicine preparation Longdan Xiegan Decoction: Weigh Gentiana scabra extract, Scutellaria baicalensis extract, Gardenia jasminoides extract, Alisma orientale extract, Akebia quinata extract, Plantago asiatica extract, Angelica sinensis extract, Rehmannia glutinosa extract, Bupleurum chinense extract, and Glycyrrhiza uralensis extract. Mix them according to the weight ratio of 10:10:15:20:12:12:1:15:5:5, then crush and sieve through 60 - 80 meshes to obtain the traditional Chinese medicine preparation of Longdan Xiegan Decoction, which is bagged for standby.

[0050] In the prevention and control of ASF, in addition to the above two main features, there will also be other conventional biosecurity measures, such as: fully enclosed management, timely improvement of environmental sanitation and equipment disinfection, regular vaccination, etc.

[0051] 3. Feed formula design for Xibei Aizhu pig farms in 2022 (see Table 3) Table 3. Feed formula for Xibei Aizhu pig farms In 2022, the production performance of Xibei Aizhu pig farms is shown in Table 4.

[0052] Table 4. Production performance of Xibei Aizhu pig farms in 2022 (with 450 sows in stock) As can be seen from Table 4, the survival rate of pigs in Xibei Aizhu pig farms reached 86.3% in 2022, and the feed conversion ratio of market pigs was 2.84:1. While in most pig farms in 2022, the survival rate of pigs born in the same year was less than 85%, and the feed conversion ratio was higher than 3.0:1. The feeding method in Example 2 performed excellently.

[0053] Example 3 In 2023, there were 400 sows in stock in Xibei Aizhu pig farms. Pig farms across the country were still under the shadow of ASF. Xibei Aizhu pig farms adopted a feeding method for preventing and controlling African swine fever, which mainly included the following steps: ① When the weekly average temperature < 10°C, add 4 kg / ton of Lanyuan Zhuwenjing and 4 kg / ton of Mahuang Decoction traditional Chinese medicine preparation to the basic feed and feed them together; ② When the weekly average temperature is 10°C - 25°C, add 4 kg / ton of Lanyuan Zhuwenjing and 4 kg / ton of Astragalus membranaceus and Acanthopanax senticosus traditional Chinese medicine preparation to the basic feed and feed them together; ③ When the weekly average temperature > 25°C, add 4 kg / ton of Lanyuan Zhuwenjing and 4 kg / ton of Longdan Xiegan Decoction traditional Chinese medicine preparation to the basic feed and feed them together.

[0054] The feeding method adopted by Xibei Aizhu pig farms for preventing and controlling African swine fever mainly has the following characteristics: 1. After the corn enters the silo, immediately start the internal circulation fan in the silo for non-stop ventilation for 24 hours a day, and start using it 15 days after storage.

[0055] 2. Add Lanyuan Zhu Wenjing + Chinese medicine preparations to the feed (depending on the temperature, choose Mahuang Tang, Huangqi Ciwujia, Longdan Xiegan Tang). The preparation methods of Lanyuan Zhu Wenjing, Mahuang Tang, Huangqi Ciwujia, Longdan Xiegan Tang are as follows: ① Preparation method of Lanyuan Zhuwen: Weigh taurine, L-ascorbic acid, fly maggot protein and glucose oxidase respectively in a weight ratio of 15:1:1:0.1, mix them and grind them. Sieve through 80-100 mesh to obtain Lanyuan Zhuwenjing, which is then bagged for later use.

[0056] ② Preparation method of Chinese medicine Mahuang Decoction: weigh ephedra extract, cinnamon twig extract, licorice extract, and almond extract in a weight ratio of 110:70:50:430, mix and crush, sieve through 60-80 mesh to form the Mahuang Decoction Chinese medicine preparation, and bag it for later use.

[0057] ③ The preparation method of the Chinese medicine preparation of Astragalus and Acanthopanax is as follows: weigh the Astragalus extract and Acanthopanax extract in a weight ratio of 20:8, mix them and then grind them, sieve through 60-80 mesh to obtain the Chinese medicine preparation of Astragalus and Acanthopanax, and bag them for later use.

[0058] ④ Preparation method of the Chinese medicine preparation Longdan Xiegan Decoction: weigh gentian extract, scutellaria baicalensis extract, gardenia jasmine extract, oriental rhizome extract, akebia extract, plantain seed extract, angelica extract, raw rehmannia root extract, bupleurum root extract, and raw licorice root extract in a weight ratio of 15:15:16:25:25:25:1.5:20:6:6, mix and grind, sieve through 60-80 mesh to make the Longdan Xiegan Decoction Chinese medicine preparation, and bag it for later use.

[0059] In terms of ASF prevention and control, in addition to the two main features mentioned above, there will be other conventional biosafety measures, such as: fully closed management, timely environmental sanitation and equipment disinfection, regular vaccination, etc.

[0060] 3. Feed formula design for Xibei Aizhu pig farm in 2023 (see Table 5) Table 5. Feed formula of Xibei Aizhu pig farm In 2023, the production performance of Xibei Aizhu pig farm is shown in Table 6.

[0061] Table 6. Production performance of Xibei Aizhu pig farm in 2023 (400 sows in stock) As can be seen from Table 6, the survival rate of pigs in Xibei Aizhu pig farm reached 86.3% in 2022, and the feed-to-weight ratio of marketed pigs was 2.84:1. However, in most pig farms in 2022, the survival rate of pigs born that year was less than 85%, and the feed-to-weight ratio exceeded 3.0:1. The feeding method of Example 3 performed excellently.

[0062] Example 4 In December 2021, the weekly average temperature was < 10°C. In the No. 1 fattening house of Baoshengyuan Pig Breeding Co., Ltd., 420 pigs (with an average individual weight of 80 - 90 kg per head) showed sub - healthy conditions, mainly including coughing in some pigs and purple skin. The feeding method for preventing and controlling African swine fever using the present invention was tried, which mainly included the following steps: The 420 fattening pigs were randomly divided into 3 groups, with 140 pigs in each group. The first group was fed with 3 kg / t of Lanyuan Zhuwenjing and 3 kg / t of Mahuang Decoction traditional Chinese medicine preparation added to the basic feed; the second group was fed with 3 kg / t of Lanyuan Zhuwenjing and 3 kg / t of Astragalus and Eleutherococcus Senticosus traditional Chinese medicine preparation added to the basic feed; the third group was fed with 3 kg / t of Lanyuan Zhuwenjing and 3 kg / t of Longdan Xiegan Decoction traditional Chinese medicine preparation added to the basic feed. The preparation methods of the above - mentioned Lanyuan Zhuwenjing, Mahuang Decoction, Astragalus and Eleutherococcus Senticosus, and Longdan Xiegan Decoction were the same as those in Example 2.

[0063] For the above three groups of sub - healthy fattening pigs, while using the method specified in the present invention, a "tooth - pulling" treatment was also adopted to eliminate unhealthy pigs. The test period was 1 month. The test results are shown in Table 7. During the test process, the weekly average temperature was < 10°C.

[0064] Table 7. Proportion of pigs treated by "tooth - pulling" in each group of the test in Baoshengyuan Pig Farm in December 2021 It can be seen from Table 7 that the proportion of pigs treated by "tooth - pulling" in Test Group 1 was the lowest. This shows that under the condition that the weekly average temperature is lower than 10°C, adding 3 kg / t of Lanyuan Zhuwenjing to the basic feed and adding 3 kg / t of Mahuang Decoction traditional Chinese medicine preparation to the feed has the best effect on preventing and controlling ASF.

[0065] Example 5 In August 2021, the weekly average temperature was > 25°C. In the No. 12 fattening house of Shunwang Pig Breeding Co., Ltd., 150 pigs (with an average individual weight of 50 - 60 kg per head) showed sub - healthy conditions, mainly including coughing in some pigs and purple skin. The feeding method for preventing and controlling African swine fever using the present invention was tried, which mainly included the following steps: The 150 fattening pigs were randomly divided into 3 groups, with 50 pigs in each group. The first group was fed with 3 kg / t of Lanyuan Zhuwenjing and 3 kg / t of Mahuang Decoction traditional Chinese medicine preparation added to the basic feed; the second group was fed with 3 kg / t of Lanyuan Zhuwenjing and 3 kg / t of Astragalus and Eleutherococcus Senticosus traditional Chinese medicine preparation added to the basic feed; the third group was fed with 3 kg / t of Lanyuan Zhuwenjing and 3 kg / t of Longdan Xiegan Decoction traditional Chinese medicine preparation added to the basic feed. The preparation methods of the above - mentioned Lanyuan Zhuwenjing, Mahuang Decoction, Astragalus and Eleutherococcus Senticosus, and Longdan Xiegan Decoction were the same as those in Example 2.

[0066] For the above three groups of sub-healthy fat pigs, while applying the method stipulated in the present invention, tooth extraction treatment was also adopted to eliminate unhealthy pigs. The test period was 1 month. The test results are shown in Table 8. During the test process, the average weekly temperature > 25°C.

[0067] Table 8. Proportion of pigs treated by tooth extraction in each group of the test in Shunwang Pig Farm in August 2021 It can be seen from Table 8 that the proportion of pigs treated by tooth extraction in Test Group 3 is the lowest. It shows that under the condition that the average weekly temperature is higher than 25°C, adding 3 kg / t of Lanyuan Zhuwenjing to the basic feed and adding the traditional Chinese medicine preparation of Longdan Xiegan Decoction at 3 kg / t of feed at the same time has the best effect on preventing and controlling ASF.

[0068] Example 6 In October 2022, 10°C < average weekly temperature < 25°C. In the No. 6 fattening house of Hongbo Pig Breeding Co., Ltd., 90 pigs (average individual weight 70 - 80 kg / pig) showed sub-healthy conditions, mainly including coughing and purple skin in some pigs. The feeding method for preventing and controlling African swine fever of the present invention was tried, which mainly included the following steps: The 90 fattening pigs were randomly divided into 3 groups, with 30 pigs in each group. The first group was fed with 3 kg / t of Lanyuan Zhuwenjing and 3 kg / t of Mahuang Decoction traditional Chinese medicine preparation added to the basic feed; the second group was fed with 3 kg / t of Lanyuan Zhuwenjing and 3 kg / t of Astragalus Root and Acanthopanax Senticosus traditional Chinese medicine preparation added to the basic feed; the third group was fed with 3 kg / t of Lanyuan Zhuwenjing and 3 kg / t of Longdan Xiegan Decoction traditional Chinese medicine preparation added to the basic feed. The production methods of the above Lanyuan Zhuwenjing, Mahuang Decoction, Astragalus Root and Acanthopanax Senticosus, and Longdan Xiegan Decoction are the same as those in Example 2.

[0069] For the above three groups of sub-healthy fat pigs, while applying the method stipulated in the present invention, tooth extraction treatment was also adopted to eliminate unhealthy pigs. The test period was 1 month. The test results are shown in Table 9. During the test process, 10°C < average weekly temperature < 25°C.

[0070] Table 9. Proportion of pigs treated by tooth extraction in each group of the test in Hongbo Pig Farm in October 2022 It can be seen from Table 9 that the proportion of pigs treated by tooth extraction in Test Group 2 is the lowest. It shows that under the condition of 10°C < average weekly temperature < 25°C, adding 3 kg / t of Lanyuan Zhuwenjing to the basic feed and adding the traditional Chinese medicine preparation of Astragalus Root and Acanthopanax Senticosus at 3 kg / t of feed at the same time has the best effect on preventing and controlling ASF.

[0071] The above-described embodiments merely represent the implementation manners of the present invention. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent for the present invention. Any technical solutions obtained by means of equivalent substitution or equivalent transformation shall fall within the protection scope of the present invention.

Claims

1. A feeding method for preventing and controlling African swine fever, characterized in that, It includes a feeding step, which includes: ① When the weekly average temperature < 10°C, add 2 - 5 kg / ton of Lanyuan Zhuwenjing and 2 - 5 kg / ton of Mahuang Decoction traditional Chinese medicine preparation to the basic feed and feed them together; ② When the weekly average temperature is 10°C - 25°C, add 2 - 5 kg / ton of Lanyuan Zhuwenjing and 2 - 5 kg / ton of Astragalus and Eleutherococcus Senticosus traditional Chinese medicine preparation to the basic feed and feed them together; ③ When the weekly average temperature > 25°C, add 2 - 5 kg / ton of Lanyuan Zhuwenjing and 2 - 5 kg / ton of Longdan Xiegan Decoction traditional Chinese medicine preparation to the basic feed and feed them together.

2. The feeding method for preventing and controlling African swine fever according to claim 1, characterized in that The preparation method of the Lanyuan Zhuwenjing is as follows: Weigh taurine, L-ascorbic acid, maggot protein, and glucose oxidase respectively and mix them in a weight ratio of (5 - 10):(0.5 - 1):(1 - 5):(0.1 - 0.5), then crush, sieve, and bag them for standby.

3. The feeding method for preventing and controlling African swine fever according to claim 1, characterized in that, The preparation method of the Mahuang Decoction traditional Chinese medicine preparation is as follows: Weigh Ephedra, Cinnamon Twig, Licorice Root, and Apricot Kernel respectively in a weight ratio of (90 - 110):(60 - 80):(30 - 50):(350 - 370), mix them, then crush, sieve, and bag them for standby.

4. The feeding method for preventing and controlling African swine fever according to claim 1, characterized in that, The preparation method of the Astragalus and Eleutherococcus Senticosus traditional Chinese medicine preparation is as follows: Weigh Astragalus membranaceus and Eleutherococcus senticosus respectively in a weight ratio of (10 - 20):(5 - 10), mix them, then crush, sieve, and bag them for standby.

5. The feeding method for preventing and controlling African swine fever according to claim 1, characterized in that, The preparation method of the Longdan Xiegan Decoction traditional Chinese medicine preparation is as follows: Weigh Gentiana scabra, Scutellaria baicalensis, Gardenia jasminoides, Alisma orientale, Akebia quinata, Plantago asiatica, Angelica sinensis, Rehmannia glutinosa, Bupleurum chinense, and Glycyrrhiza uralensis Fisch. respectively in a weight ratio of (5 - 10):(10 - 15):(10 - 15):(15 - 20):(10 - 15):(10 - 15):(1 - 5):(10 - 15):(5 - 10):(5 - 10), mix them, then crush, sieve, and bag them for standby.

6. The feeding method for preventing and controlling African swine fever according to any one of claims 2-5, characterized in that, The mesh number of the sieving is 60 - 80 meshes.

7. The feeding method for preventing and controlling African swine fever according to claim 1, characterized in that, The corn in the basic feed is pretreated as follows: Store it in the isolation warehouse outside the feed processing workshop or in a silo for more than 15 days. Install a circulating ventilation duct in the warehouse to ensure continuous ventilation for 24 hours a day, and continuously ventilate by mechanical pressure for 15 days.

8. The feeding method for preventing and controlling African swine fever according to claim 1, wherein The feeding method is at least one of sow feeding, piglet feeding, nursery pig feeding, and fattening pig feeding.

9. The feeding method for preventing and controlling African swine fever according to claim 8, characterized in that, It also includes a pigsty nursing step.

10. The feeding method for preventing and controlling African swine fever according to claim 9, characterized in that, It also includes a step of regularly inoculating vaccines.

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