Pig feed additive for improving constipation due to spleen deficiency and preparation method thereof, pig feed and application

Abstract

The invention discloses a pig feed additive for improving constipation due to spleen deficiency. The pig feed additive comprises 25-35 parts of anhydrous sodium sulphate, 15-25 parts of monopotassium phosphate, 5-10 parts of taurine, 3-8 parts of Chinese herbal medicines, 1-3 parts of chromium yeast and 38-58 parts of a carrier, the components and the component proportion are scientifically and reasonably designed, after feeding, the spleen deficiency constipation symptom of bred pigs can be practically improved, nutrient element absorption in the bred pigs is promoted, the anti-stress ability of the bred pigs is improved, and the feed conforms to the health state of growing and fattening pigs in a farm so as to achieve the weight gain pursuit; the invention also discloses a preparation method of the pig feed additive, a pig feed containing the pig feed additive and application of the pig feed.

Description

Technical Field

[0001] The invention belongs to the technical field of pig breeding, and particularly relates to a pig feed additive for improving spleen deficiency constipation, a preparation method thereof, pig feed and application thereof. Background Art

[0002] Pig constipation is a common digestive tract problem in pig farms, which has adverse effects on the growth, development and health of pigs. There are many reasons for pig constipation (such as inappropriate feed, lack of exercise, disease, etc.). One of the reasons is that in order to ensure that the pigs in the fattening and fattening periods do not get sick and gain weight steadily, pig farms abuse bitter and cold detoxifying drugs (such as Huanglian Jiedusan, etc.) and antibiotics (such as amoxicillin, etc.) to a serious extent. Long-term use of such drugs may cause side effects. The initial manifestation of the side effect is diarrhea, and the diarrhea symptoms disappear after the drug is stopped in the later stage. However, spleen deficiency and imbalance have already occurred in the farmed pigs, which leads to symptoms such as constipation in some farmed pigs.

[0003] Patent document with announcement number CN112779196B discloses a composite probiotic preparation for reducing the incidence of constipation in sows, and its preparation method and application. The composite probiotic preparation includes Pediococcus acidilactici PA-19, Lactobacillus plantarum P-8, Bifidobacterium animalis lactis subspecies V9, and Bifidobacterium lactis Probio-M8. The composite probiotic preparation only includes probiotics and their metabolites, but does not include other medicinal ingredients, so as to adjust the balance of flora in the pig intestine, enhance immunity, reduce the incidence of constipation, keep pregnant and lactating sows in a healthy state, and thus make newborn piglets have a good health condition.

[0004] The above-mentioned existing technologies can effectively improve the constipation symptoms caused by imbalanced gastrointestinal flora in farmed pigs, but the effect on constipation caused directly or indirectly by spleen deficiency is relatively limited. The applicant has deeply cultivated the field of pig farming technology and has a deep understanding of downstream farms. He believes that it is necessary to develop a pig feed additive that can improve the constipation symptoms caused by spleen dysfunction and apply it to daily feeding in farms. Summary of the invention

[0005] In view of the problems in the related technology, the present invention proposes a pig feed additive for improving spleen deficiency constipation and its preparation method, pig feed, and application, so as to overcome the above-mentioned technical problems existing in the existing related technology.

[0006] The technical solution of the present invention is achieved in this way:

[0007] A pig feed additive for improving spleen deficiency constipation, comprising 25-35 parts of sodium sulfate, 15-25 parts of potassium dihydrogen phosphate, 5-10 parts of taurine, 3-8 parts of Chinese herbal medicine, 1-3 parts of yeast chromium and 38-58 parts of a carrier;

[0008] The Chinese herbal medicine comprises 35-45 parts of Poria cocos and 30-35 parts of jujube.

[0009] Yuanming powder can relieve heat and promote bowel movements, moisturize dryness and soften hard masses, and improve constipation symptoms in farmed pigs. It can also introduce sulfur and sodium. Sulfur can promote the growth and development of farmed pigs and the synthesis of substances such as protein and taurine in the body, which is in line with the farm's pursuit of weight gain in fattening pigs.

[0010] Adding an appropriate amount of potassium dihydrogen phosphate to introduce potassium and phosphorus can regulate the acid-base balance in farmed pigs and reduce diseases caused by acid-base imbalance caused by diet. Phosphorus can promote the absorption of nutrients such as calcium, phosphorus, and iron in farmed pigs and enhance the growth and development of bones and muscles. At the same time, potassium dihydrogen phosphate can also improve the disease resistance of farmed pigs, which is also in line with the farm's pursuit of keeping fattening pigs healthy and gaining weight.

[0011] Imbalance in the body caused by spleen deficiency may also indirectly cause symptoms such as potassium and sodium ion disorders. The present invention introduces appropriate amounts of potassium and sodium ions for regulation, and further designs the components based on the fact that insulin can enhance the efficiency of the sodium-potassium pump. Taurine is used to improve the metabolism and function of pancreatic cells and promote the secretion and release of insulin. The trace element chromium is introduced through yeast chromium to improve insulin sensitivity and enhance insulin function. Taurine and chromium are combined to enhance insulin secretion and function, thereby enhancing the efficiency of the sodium-potassium pump and promoting the entry of extracellular potassium ions into cells.

[0012] By enhancing the efficiency of the sodium-potassium pump and combining it with a balanced supply of exogenous electrolytes, the tissue osmotic pressure balance can be efficiently regulated, which helps prevent or improve constipation caused by spleen deficiency in farmed pigs.

[0013] Preferably, the Chinese herbal medicine further comprises 15 to 25 parts of cinnamon twig and 5 to 15 parts of liquorice.

[0014] The present invention is designed with Chinese herbal medicine preparations to work synergistically with other ingredients. Poria has the function of adjusting the balance of water and electrolytes, and can invigorate the spleen and eliminate dampness. It has the effect of laxative and detoxification in synergy with Yuanming powder. Jujube and cassia twig are used to assist in enhancing the effect of invigorating the spleen and replenishing qi. Jujube supplements potassium and other electrolytes, cassia twig strengthens the myocardium and large blood vessels, increases blood output, and increases peripheral and renal blood flow. Licorice focuses on retaining sodium and water, and has an antagonistic relationship with Poria, just like glomerular filtration and tubular reabsorption. The balance of water and electrolytes can be achieved through "filtration first and then absorption".

[0015] In order to ensure the uniformity and consistency of each active ingredient in the finished product of the present invention, the present invention also designs a carrier with a specific ratio. Preferably, the carrier is one or more of rice bran, stone powder, and calcium hydrogen phosphate mixed in any proportion.

[0016] More preferably, the carrier is defatted rice bran and calcium hydrogen phosphate mixed in a weight ratio of 7 to 9: 1 to 3. The rough surface structure of defatted rice bran is conducive to the adhesion of the effective components designed by the present invention, and it is also relatively convenient to process and increase the hole structure. Therefore, as the main carrier, supplemented with a small amount of calcium hydrogen phosphate as a stabilizer and a bulking agent, the taste and tissue structure of the present invention after being added to pig feed can be improved, and the storage stability of the present invention can be improved.

[0017] The present invention also discloses a method for preparing the above-mentioned pig feed additive for improving spleen deficiency constipation, comprising the following steps:

[0018] (1) crushing a preset weight portion of Chinese herbal medicine into 250-300 mesh, and then mixing it with a preset weight portion of potassium dihydrogen phosphate, taurine, and yeast chromium to prepare a solution with water as the solvent, and adding a thickener after fully stirring to adjust the viscosity to 50-80 cP to prepare a spray solution, which is added to a spray device for standby use;

[0019] (2) a preset weight portion of sodium sulphate is spread on a material tray in at least one batch, the specific batch number is designed according to the size of the material tray in the actual production line, the spread thickness of the sodium sulphate is at least 5 mm, the spray device sprays the spray solution onto the upper surface of the spread sodium sulphate in at least one batch, the number of spray batches is the same as the number of sodium sulphate batches, and the spraying amount per unit area is based on the spray solution not infiltrating the bottom of the material tray after spraying;

[0020] (3) preparing a preset weight amount of defatted rice bran and calcium bicarbonate but not mixing them, spraying the preset weight amount of defatted rice bran with water vapor of 100-120° C. until the water content of the defatted rice bran reaches at least 10%, without pursuing too high a water content, as too high a water content will result in a long subsequent drying and water control time; then placing the defatted rice bran in an anaerobic environment, introducing an anaerobic hot air flow at 120-150° C., treating the defatted rice bran again until the water content is at least less than 8%, and then mixing the defatted rice bran with the calcium bicarbonate to prepare a carrier mixture; the re-evaporation of the internal water of the defatted rice bran after absorbing water can increase the roughness and porous structure of the defatted rice bran surface, and the high-temperature anaerobic hot air flow treatment can improve the storage stability of the defatted rice bran;

[0021] (4) When the surface of each batch of materials prepared in step (2) is still in a wet state, a portion of the carrier mixture prepared in step (3) is spread on the surface thereof to a thickness not exceeding 3 mm, and the mixture is conveyed to a nip roller while being spread flat. The nip roller gently presses the carrier mixture into the surface of the wetted material in step (2), and the wetted material initially adheres to the carrier. The pressure of the nip roller is designed so as not to damage the rough porous structure of the surface of the carrier.

[0022] (5) The material obtained in step (4) is scraped from the bottom of the feed tray by a scraper to make the material into a roll shape. The material at the bottom contacts the material at the top during the curling process and is transported to the stirring and drying equipment. If there is any remaining carrier mixture, it is added to the stirring and drying equipment for stirring. It is first stirred at room temperature for 10-15 minutes in an anaerobic environment to allow the material obtained in step (2) to further fully contact and adhere to the carrier mixture, so that the distribution of the effective ingredients in the carrier mixture is more uniform. Then, it is treated again under an anaerobic hot air flow at 120-150° C. until the water content of the material is at least less than 8%, thereby obtaining the pig feed additive.

[0023] In actual production operations, step (3) may also be performed before step (1), depending on the equipment design of the assembly line and the material production speed planning, as long as it can be coordinated with step (4).

[0024] By utilizing the hygroscopicity of glauber salt, Chinese herbal medicine, potassium dihydrogen phosphate, yeast chromium and taurine are first evenly adhered to the surface of glauber salt in the form of spraying for pre-dispersion, and a rough and porous carrier is prepared at the same time, which is conducive to the subsequent adhesion of other effective ingredients and re-dispersion, so that the effective ingredients designed in the present invention are evenly distributed on the carrier surface, avoiding the problems of easy agglomeration and uneven distribution of fine materials.

[0025] Preferably, in step (1), the thickener is sodium alginate, chitosan or a mixture of the two in any proportion, which has a good thickening effect and is harmless to farmed pigs.

[0026] Preferably, in step (1), the potassium dihydrogen phosphate is first fully stirred and dissolved with water until the solution is clear and free of solids, and then yeast chromium, taurine and crushed Chinese herbal medicine are added in sequence. Potassium dihydrogen phosphate is a prismatic crystalline material. If it is not fully stirred and dissolved in water first, it is difficult to achieve the effect of uniform distribution of components later.

[0027] Preferably, in step (2), the D80 particle size of the sodium sulphate is 150-200 meshes, and has good fluidity, which is conducive to subsequent processing.

[0028] Preferably, in step (3), the D80 particle size of the defatted rice bran is 0.5-1 mm. Compared with defatted rice bran with a coarser particle size, the defatted rice bran that has been crushed to a certain extent has better palatability to pigs, which is beneficial to improving the compliance of farmed pigs to ingest the present invention. At the same time, the pore structure is more fully exposed, which is beneficial to the subsequent adhesion of other effective ingredients. Compared with defatted rice bran with a smaller particle size, the water holding capacity is lower, which is beneficial to maintaining a loose and dry state.

[0029] In actual operation, the drying operation of step (5) can also be replaced by: using a scraper to scrape the material obtained in step (4) from the bottom of the material tray to make it curled, the material at the bottom contacts the material at the top during the curling process, and is transported to the stirring and drying equipment. If there is any remaining carrier mixture, it is added to the stirring and drying equipment for stirring, and a desiccant is added to mix until the moisture content of the material is ≤8%.

[0030] Specifically, the desiccant is one or more of silicate, bentonite or silicon dioxide mixed in any proportion. In addition to the water control function, this type of desiccant can also promote the growth and development of farmed pigs and improve the pig feed conversion rate.

[0031] The invention also discloses a pig feed comprising the pig feed additive.

[0032] Preferably, the pig feed comprises 65-70 parts of corn, 1-4 parts of defatted rice bran, 15-20 parts of soybean meal, 1-2 parts of flour, 5-10 parts of bran and 2-6 parts of the pig feed additive.

[0033] The invention also discloses the use of the pig feed additive in a product for preventing or improving spleen deficiency constipation in 100-150kg fattening Large White pigs. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be clearly and completely described below 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.

[0035] Example 1

[0036] This embodiment includes the following materials and preparation steps:

[0037] 1) Preparation of spray solution

[0038] 1-1) 3kg of Chinese herbal medicine is crushed into 250 mesh;

[0039] The Chinese herbal medicine consists of Poria cocos, jujube, cassia twig and liquorice, which are respectively configured in a weight ratio of 35:30:15:5.

[0040] 1-2) First, 15 kg of potassium dihydrogen phosphate is thoroughly stirred with water in a stirring device and dissolved until the solution is clear and free of solids.

[0041] 1-3) Keep stirring, add 1kg yeast chromium, 5kg taurine and crushed Chinese herbal medicine in turn, stir thoroughly and add thickener "sodium alginate", adjust the viscosity to 50cP, make a spray solution, add it to the spray device for standby use.

[0042] 2) Powder spray

[0043] 2-1) 25 kg of sodium sulphate (D80 particle size is 150 mesh) is spread on the material tray in three batches. The thickness of sodium sulphate is about 5 mm. There is no need to pursue too precise thickness.

[0044] 2-2) The spray device sprays the spray solution onto the upper surface of the spread sodium sulfate in three batches, and the spraying amount per unit area is based on the fact that the spray solution does not infiltrate the bottom of the tray after spraying.

[0045] 3) Carrier pretreatment

[0046] 3-1) 38 kg of a carrier was prepared, wherein the carrier was defatted rice bran (D80 particle size: 0.5 mm) and calcium hydrogen phosphate in a weight ratio of 7:1 but not mixed.

[0047] 3-2) Spraying 100° C. steam onto the defatted rice bran until the water content of the defatted rice bran reaches 10%.

[0048] 3-3) The defatted rice bran is placed in an oxygen-free environment, and treated again under an oxygen-free hot air flow at 120° C. until the water content is less than 8%, and then mixed evenly with calcium bicarbonate to prepare a carrier mixture.

[0049] 4) When the surface of each batch of material prepared in step 2) is still in a wet state after spraying, a portion of the carrier mixture prepared in step 3) is spread on its surface with a thickness of about 3 mm, and is conveyed to the nip roller in a flat state. The nip roller is set to 0.05 MPa, and the carrier mixture is lightly pressed into the surface of the wet material in step 2), and the wet material initially adheres to the carrier.

[0050] 5) The material obtained in step 4) is scraped from the bottom of the feed tray by a scraper to make the material into a roll shape, and the material at the bottom contacts the material at the top during the curling process and is transported to the stirring and drying equipment. If there is any remaining, uncoated carrier mixture, it is added to the stirring and drying equipment for stirring. It is first stirred at room temperature for 10 minutes in an anaerobic environment, and then processed again under an anaerobic hot air flow at 120° C. until the water content of the material is less than 8%, thereby obtaining a pig feed additive.

[0051] Example 2

[0052] This embodiment includes the following materials and preparation steps:

[0053] 1) Preparation of spray solution

[0054] 1-1) 5kg of Chinese herbal medicine is crushed into 280 mesh;

[0055] The Chinese herbal medicine consists of Poria cocos, jujube, cassia twig and liquorice, which are respectively configured in a weight ratio of 39:32:19:10.

[0056] 1-2) 20 kg of potassium dihydrogen phosphate is first thoroughly stirred and dissolved with water in a stirring device until the solution is clear and free of solids.

[0057] 1-3) Keep stirring, add 2kg yeast chromium, 8kg taurine and crushed Chinese herbal medicine in turn, stir thoroughly and add thickener "chitosan", adjust the viscosity to 65cP, make a spray solution, add it to the spray device for standby use.

[0058] 2) Powder spray

[0059] 2-1) 30kg of sodium sulphate (D80 particle size is 180 mesh) is spread on the material tray in three batches. The thickness of sodium sulphate is about 6mm. There is no need to pursue too precise thickness.

[0060] 2-2) The spray device sprays the spray solution onto the upper surface of the spread sodium sulfate in three batches, and the spraying amount per unit area is based on the fact that the spray solution does not infiltrate the bottom of the tray after spraying.

[0061] 3) Carrier pretreatment

[0062] 3-1) 48 kg of a carrier was prepared, wherein the carrier was defatted rice bran (D80 particle size: 0.7 mm) and calcium hydrogen phosphate in a weight ratio of 8:2 but not mixed.

[0063] 3-2) Spraying 110° C. steam onto the defatted rice bran until the water content of the defatted rice bran reaches 10%.

[0064] 3-3) The defatted rice bran is placed in an oxygen-free environment, and treated again under an oxygen-free hot air flow at 135° C. until the water content is less than 8%, and then mixed evenly with calcium bicarbonate to prepare a carrier mixture.

[0065] 4) When the surface of each batch of materials prepared in step 2) is still in a wet state, a portion of the carrier mixture prepared in step 3) is spread on its surface with a thickness of about 3 mm, and is conveyed to the nip roller in a flat state. The nip roller is set to 0.05 MPa, and the carrier mixture is lightly pressed into the wet material surface of step 2), and the wet material initially adheres to the carrier.

[0066] 5) The material obtained in step 4) is scraped from the bottom of the feed tray by a scraper to make the material into a roll shape, and the material at the bottom contacts the material at the top during the curling process and is transported to the stirring and drying equipment. If there is any remaining, uncoated carrier mixture, it is added to the stirring and drying equipment for stirring. It is first stirred at room temperature for 12 minutes in an anaerobic environment, and then processed again under an anaerobic hot air flow at 135° C. until the water content of the material is less than 8%, thereby obtaining a pig feed additive.

[0067] Example 3

[0068] This embodiment includes the following materials and preparation steps:

[0069] 1) Preparation of spray solution

[0070] 1-1) 8kg of Chinese herbal medicine is crushed into 300 mesh;

[0071] The Chinese herbal medicine consists of Poria cocos, jujube, cassia twig and liquorice, which are respectively configured in a weight ratio of 45:35:25:15.

[0072] 1-2) 25 kg of potassium dihydrogen phosphate is first thoroughly stirred and dissolved with water in a stirring device until the solution is clear and free of solids.

[0073] 1-3) Keep stirring, add 3kg yeast chromium, 10kg taurine and crushed Chinese herbal medicine in turn, stir thoroughly and add thickener "chitosan", adjust the viscosity to 80cP, make a spray solution, add it to the spray device for standby use.

[0074] 2) Powder spray

[0075] 2-1) 35 kg of sodium sulphate (D80 particle size is 200 mesh) is spread on the material tray in three batches. The thickness of sodium sulphate is about 7 mm. There is no need to pursue too precise thickness.

[0076] 2-2) The spray device sprays the spray solution onto the upper surface of the spread sodium sulfate in three batches, and the spraying amount per unit area is based on the fact that the spray solution does not infiltrate the bottom of the tray after spraying.

[0077] 3) Carrier pretreatment

[0078] 3-1) 58 kg of a carrier was prepared, wherein the carrier was defatted rice bran (D80 particle size: 1 mm) and calcium hydrogen phosphate in a weight ratio of 9:3 but not mixed.

[0079] 3-2) Spraying 120° C. steam onto the defatted rice bran until the water content of the defatted rice bran reaches 10%.

[0080] 3-3) The defatted rice bran is placed in an oxygen-free environment, and is treated again under an oxygen-free hot air flow at 150° C. until the water content is less than 8%, and then mixed evenly with calcium bicarbonate to prepare a carrier mixture.

[0081] (4) When the surface of each batch of materials prepared in step (2) is still in a wet state, a portion of the carrier mixture prepared in step (3) is spread on its surface with a thickness of about 3 mm, and is conveyed to a press roller in a flat state. The press roller is set to 0.05 MPa, and the carrier mixture is lightly pressed into the surface of the wet material in step (2), so that the wet material initially adheres to the carrier.

[0082] (5) The material obtained in step (4) is scraped from the bottom of the feed tray by a scraper to make the material into a roll shape. The material at the bottom contacts the material at the top during the curling process and is transported to the stirring and drying equipment. If there is any remaining, uncoated carrier mixture, it is added to the stirring and drying equipment for stirring. It is first stirred at room temperature for 15 minutes in an oxygen-free environment, and then processed again under an oxygen-free hot air flow at 150° C. until the water content of the material is less than 8%, thereby obtaining a pig feed additive.

[0083] Example 4

[0084] A. Preparation of pig feed additives

[0085] 1-1) 5kg of Chinese herbal medicine is crushed into 280 mesh;

[0086] The Chinese herbal medicine consists of Poria cocos, jujube, cassia twig and liquorice, which are respectively configured in a weight ratio of 39:32:19:10.

[0087] 1-2) 20 kg of potassium dihydrogen phosphate is first thoroughly stirred and dissolved with water in a stirring device until the solution is clear and free of solids.

[0088] 1-3) Keep stirring, add 2kg yeast chromium, 8kg taurine and crushed Chinese herbal medicine in turn, stir thoroughly and add thickener "chitosan", adjust the viscosity to 65cP, make a spray solution, add it to the spray device for standby use.

[0089] 2) Powder spray

[0090] 2-1) 30kg of sodium sulphate (D80 particle size is 180 mesh) is spread on the material tray in three batches. The thickness of sodium sulphate is about 6mm. There is no need to pursue too precise thickness.

[0091] 2-2) The spray device sprays the spray solution onto the upper surface of the spread sodium sulfate in three batches, and the spraying amount per unit area is based on the fact that the spray solution does not infiltrate the bottom of the tray after spraying.

[0092] 3) Carrier pretreatment

[0093] 3-1) 48 kg of a carrier was prepared, wherein the carrier was defatted rice bran (D80 particle size: 0.7 mm) and calcium hydrogen phosphate in a weight ratio of 8:2 but not mixed.

[0094] 3-2) Spraying 110° C. steam onto the defatted rice bran until the water content of the defatted rice bran reaches 10%.

[0095] 3-3) placing the defatted rice bran in an anaerobic environment, passing it through an anaerobic hot air flow at 135° C., treating it again until the water content is less than 8%, and then mixing it evenly with calcium bicarbonate to prepare a carrier mixture;

[0096] (4) When the surface of each batch of materials prepared in step (2) is still in a wet state, a portion of the carrier mixture prepared in step (3) is spread on its surface with a thickness of about 3 mm, and is conveyed to a press roller in a flat state. The press roller is set to 0.05 MPa, and the carrier mixture is lightly pressed into the surface of the wet material in step (2), so that the wet material initially adheres to the carrier.

[0097] (5) The material obtained in step (4) is scraped from the bottom of the feed tray by a scraper to make the material into a roll shape, and the material at the bottom contacts the material at the top during the curling process and is transported to a stirring and drying device. If there is any remaining carrier mixture, it is added to the stirring and drying device for stirring, and bentonite as a desiccant is added in small amounts and multiple times, and mixed until the moisture content of the material is less than 8%, thereby obtaining a pig feed additive.

[0098] Comparative Example 1

[0099] This comparative example includes the following materials and preparation steps:

[0100] 1) Preparation of spray solution

[0101] 1-1) 20 kg of potassium dihydrogen phosphate is first thoroughly stirred and dissolved with water in a stirring device until the solution is clear and free of solids.

[0102] 1-2) Keep stirring, add 2kg yeast chromium, 8kg taurine and crushed Chinese herbal medicine in turn, stir thoroughly and add thickener "chitosan", adjust the viscosity to 65cP, prepare a spray solution, add it to the spray device for standby use.

[0103] 2) Powder spray

[0104] 2-1) 30kg of sodium sulphate (D80 particle size is 180 mesh) is spread on the material tray in three batches. The thickness of sodium sulphate is about 6mm. There is no need to pursue too precise thickness.

[0105] 2-2) The spray device sprays the spray solution onto the upper surface of the spread sodium sulfate in three batches, and the spraying amount per unit area is based on the fact that the spray solution does not infiltrate the bottom of the tray after spraying.

[0106] 3) Carrier pretreatment

[0107] 3-1) 48 kg of a carrier was prepared, wherein the carrier was defatted rice bran (D80 particle size: 0.7 mm) and calcium hydrogen phosphate in a weight ratio of 8:2 but not mixed.

[0108] 3-2) Spraying 110° C. steam onto the defatted rice bran until the water content of the defatted rice bran reaches 10%.

[0109] 3-3) The defatted rice bran is placed in an oxygen-free environment, and treated again under an oxygen-free hot air flow at 135° C. until the water content is less than 8%, and then mixed evenly with calcium bicarbonate to prepare a carrier mixture.

[0110] 4) When the surface of each batch of materials prepared in step 2) is still in a wet state, a portion of the carrier mixture prepared in step 3) is spread on its surface with a thickness of about 3 mm, and is conveyed to the nip roller in a flat state. The nip roller is set to 0.05 MPa, and the carrier mixture is lightly pressed into the wet material surface of step 2), and the wet material initially adheres to the carrier.

[0111] 5) The material obtained in step 4) is scraped from the bottom of the feed tray by a scraper to make the material into a roll shape, and the material at the bottom contacts the material at the top during the curling process and is transported to the stirring and drying equipment. If there is any remaining, uncoated carrier mixture, it is added to the stirring and drying equipment for stirring. It is first stirred at room temperature for 12 minutes in an anaerobic environment, and then processed again under an anaerobic hot air flow at 135° C. until the water content of the material is less than 8%, thereby obtaining a pig feed additive.

[0112] Comparative Example 2

[0113] This comparative example includes the following materials and preparation steps:

[0114] 1) Preparation of spray solution

[0115] 1-1) 5kg of Chinese herbal medicine is crushed into 280 mesh;

[0116] The Chinese herbal medicine consists of Poria cocos, jujube, cassia twig and liquorice, which are respectively configured in a weight ratio of 39:32:19:10.

[0117] 1-2) The crushed Chinese herbal medicine and water are fully stirred in a stirring device, and a thickener "chitosan" is added to adjust the viscosity to 65 cP to prepare a spray solution, which is added to a spray device for standby use.

[0118] 2) Powder spray

[0119] 2-1) 30kg of sodium sulphate (D80 particle size is 180 mesh) is spread on the material tray in three batches. The thickness of sodium sulphate is about 6mm. There is no need to pursue too precise thickness.

[0120] 2-2) The spray device sprays the spray solution onto the upper surface of the spread sodium sulfate in three batches, and the spraying amount per unit area is based on the fact that the spray solution does not infiltrate the bottom of the tray after spraying.

[0121] 3) Carrier pretreatment

[0122] 3-1) 48 kg of a carrier was prepared, wherein the carrier was defatted rice bran (D80 particle size: 0.7 mm) and calcium hydrogen phosphate in a weight ratio of 8:2 but not mixed.

[0123] 3-2) Spraying 110° C. steam onto the defatted rice bran until the water content of the defatted rice bran reaches 10%.

[0124] 3-3) The defatted rice bran is placed in an oxygen-free environment, and treated again under an oxygen-free hot air flow at 135° C. until the water content is less than 8%, and then mixed evenly with calcium bicarbonate to prepare a carrier mixture.

[0125] 4) When the surface of each batch of materials prepared in step 2) is still in a wet state, a portion of the carrier mixture prepared in step 3) is spread on its surface with a thickness of about 3 mm, and is conveyed to the nip roller in a flat state. The nip roller is set to 0.05 MPa, and the carrier mixture is lightly pressed into the wet material surface of step 2), and the wet material initially adheres to the carrier.

[0126] 5) The material obtained in step 4) is scraped from the bottom of the feed tray by a scraper to make the material into a roll shape, and the material at the bottom contacts the material at the top during the curling process and is transported to the stirring and drying equipment. If there is any remaining, uncoated carrier mixture, it is added to the stirring and drying equipment for stirring. It is first stirred at room temperature for 12 minutes in an anaerobic environment, and then processed again under an anaerobic hot air flow at 135° C. until the water content of the material is less than 8%, thereby obtaining a pig feed additive.

[0127] Comparative Example 3

[0128] This comparative example includes the following materials and preparation steps:

[0129] 1) Preparation of spray solution

[0130] 1-1) 8kg of Chinese herbal medicine is crushed into 300 mesh;

[0131] The Chinese herbal medicine consists of Poria cocos, jujube, cassia twig and liquorice, which are respectively configured in a weight ratio of 45:35:25:15.

[0132] 1-2) 25 kg of potassium dihydrogen phosphate is first thoroughly stirred and dissolved with water in a stirring device until the solution is clear and free of solids.

[0133] 1-3) Keep stirring, add 3kg yeast chromium, 10kg taurine and crushed Chinese herbal medicine in turn, stir thoroughly and add thickener "chitosan", adjust the viscosity to 80cP, make a spray solution, add it to the spray device for standby use.

[0134] 2) Powder spray

[0135] 2-1) 40kg of sodium sulphate (D80 particle size is 200 mesh) is spread on the material tray in three batches. The thickness of sodium sulphate is about 7mm. There is no need to pursue too precise thickness.

[0136] 2-2) The spray device sprays the spray solution onto the upper surface of the spread sodium sulfate in three batches, and the spraying amount per unit area is based on the fact that the spray solution does not infiltrate the bottom of the tray after spraying.

[0137] 3) Carrier pretreatment

[0138] 3-1) 58 kg of a carrier was prepared, wherein the carrier was defatted rice bran (D80 particle size: 1 mm) and calcium hydrogen phosphate in a weight ratio of 9:3 but not mixed.

[0139] 3-2) Spraying 120° C. steam onto the defatted rice bran until the water content of the defatted rice bran reaches 10%.

[0140] 3-3) The defatted rice bran is placed in an oxygen-free environment, and is treated again under an oxygen-free hot air flow at 150° C. until the water content is less than 8%, and then mixed evenly with calcium bicarbonate to prepare a carrier mixture.

[0141] (4) When the surface of each batch of materials prepared in step (2) is still in a wet state, a portion of the carrier mixture prepared in step (3) is spread on its surface with a thickness of about 3 mm, and is conveyed to a press roller in a flat state. The press roller is set to 0.05 MPa, and the carrier mixture is lightly pressed into the surface of the wet material in step (2), so that the wet material initially adheres to the carrier.

[0142] (5) The material obtained in step (4) is scraped from the bottom of the feed tray by a scraper to make the material into a roll shape. The material at the bottom contacts the material at the top during the curling process and is transported to the stirring and drying equipment. If there is any remaining, uncoated carrier mixture, it is added to the stirring and drying equipment for stirring. It is first stirred at room temperature for 15 minutes in an oxygen-free environment, and then processed again under an oxygen-free hot air flow at 150° C. until the water content of the material is less than 8%, thereby obtaining a pig feed additive.

[0143] Comparative Example 4

[0144] This comparative example includes the following materials and preparation steps:

[0145] 1) Preparation of spray solution

[0146] 1-1) 8kg of Chinese herbal medicine is crushed into 300 mesh;

[0147] The Chinese herbal medicine consists of Poria cocos, jujube, cassia twig and liquorice, which are respectively configured in a weight ratio of 45:35:25:15.

[0148] 1-2) 30 kg of potassium dihydrogen phosphate is first thoroughly stirred and dissolved with water in a stirring device until the solution is clear and free of solids.

[0149] 1-3) Keep stirring, add 3kg yeast chromium, 10kg taurine and crushed Chinese herbal medicine in turn, stir thoroughly and add thickener "chitosan", adjust the viscosity to 80cP, make a spray solution, add it to the spray device for standby use.

[0150] 2) Powder spray

[0151] 2-1) 35 kg of sodium sulphate (D80 particle size is 200 mesh) is spread on the material tray in three batches. The thickness of sodium sulphate is about 7 mm. There is no need to pursue too precise thickness.

[0152] 2-2) The spray device sprays the spray solution onto the upper surface of the spread sodium sulfate in three batches, and the spraying amount per unit area is based on the fact that the spray solution does not infiltrate the bottom of the tray after spraying.

[0153] 3) Carrier pretreatment

[0154] 3-1) 58 kg of a carrier was prepared, wherein the carrier was defatted rice bran (D80 particle size: 1 mm) and calcium hydrogen phosphate in a weight ratio of 9:3 but not mixed.

[0155] 3-2) Spraying 120° C. steam onto the defatted rice bran until the water content of the defatted rice bran reaches 10%.

[0156] 3-3) The defatted rice bran is placed in an oxygen-free environment, and is treated again under an oxygen-free hot air flow at 150° C. until the water content is less than 8%, and then mixed evenly with calcium bicarbonate to prepare a carrier mixture.

[0157] (4) When the surface of each batch of materials prepared in step (2) is still in a wet state, a portion of the carrier mixture prepared in step (3) is spread on its surface with a thickness of about 3 mm, and is conveyed to a press roller in a flat state. The press roller is set to 0.05 MPa, and the carrier mixture is lightly pressed into the surface of the wet material in step (2), so that the wet material initially adheres to the carrier.

[0158] (5) The material obtained in step (4) is scraped from the bottom of the feed tray by a scraper to make the material into a roll shape. The material at the bottom contacts the material at the top during the curling process and is transported to the stirring and drying equipment. If there is any remaining, uncoated carrier mixture, it is added to the stirring and drying equipment for stirring. It is first stirred at room temperature for 15 minutes in an oxygen-free environment, and then processed again under an oxygen-free hot air flow at 150° C. until the water content of the material is less than 8%, thereby obtaining a pig feed additive.

[0159] Comparative Example 5

[0160] This embodiment includes the following materials and preparation steps:

[0161] 1) Preparation of solution

[0162] 1-1) 5kg of Chinese herbal medicine is crushed into 280 mesh;

[0163] The Chinese herbal medicine consists of Poria cocos, jujube, cassia twig and liquorice, which are respectively configured in a weight ratio of 39:32:19:10.

[0164] 1-2) 20 kg of potassium dihydrogen phosphate is first thoroughly stirred and dissolved with water in a stirring device until the solution is clear and free of solids.

[0165] 1-3) Keep stirring, add 2kg yeast chromium, 8kg taurine and crushed Chinese herbal medicine to make a solution.

[0166] 2) Carrier pretreatment

[0167] 2-1) 48 kg of a carrier was prepared, wherein the carrier was defatted rice bran (D80 particle size: 0.7 mm) and calcium hydrogen phosphate in a weight ratio of 8:2 but not mixed.

[0168] 2-2) Spraying 110° C. steam onto the defatted rice bran until the water content of the defatted rice bran reaches 10%.

[0169] 2-3) The defatted rice bran is placed in an oxygen-free environment, and treated again under an oxygen-free hot air flow at 135° C. until the water content is less than 8%, and then mixed evenly with calcium bicarbonate to prepare a carrier mixture.

[0170] 3) The carrier mixture, 30 kg of sodium sulfate (D80 particle size is 180 mesh) and the solution obtained in step 1) are added to a stirring and drying device for stirring, first stirred at room temperature for 12 minutes in an anaerobic environment, and then processed again under an anaerobic hot air flow at 135° C. until the water content of the material is less than 8%, thereby obtaining a pig feed additive.

[0171] Material form and storage stability test

[0172] The shape of the material was observed with the naked eye and recorded, and then the pig feed additives prepared in Examples 1 to 4 and Comparative Examples 1 to 5 were packed in packaging bags of the same specification (10 kg / bag), placed in an environment with a temperature fluctuation range of 40 to 43° C. and a humidity fluctuation range of 75 to 80% RH for 60 days, and then taken out and observed with the naked eye for the presence of agglomeration, mildew or odor.

[0173] The results are as follows:

[0174]

[0175] The above-mentioned qualified examples 1 to 4 and comparative examples 1 to 4 after being placed for 60 days were configured into pig feed, namely the following examples 5 to 8 and comparative examples 6 to 9, and then the next step of testing was carried out to actually check whether the test pigs were willing to eat the pig feed containing examples 1 to 4 and comparative examples 1 to 4 after being placed for 60 days, so as to further verify the storage stability of each sample, and at the same time test whether each pig feed sample can improve the symptoms of spleen deficiency constipation in farmed pigs.

[0176] Example 5

[0177] Preparing pig feed

[0178] The pig feed comprises 67.5 kg corn, 2.5 kg defatted rice bran, 17 kg soybean meal, 1.5 kg flour, 7.5 kg bran and 2 kg of the pig feed additive prepared in Example 1, and the mixture is fully stirred.

[0179] Example 6

[0180] Preparing pig feed

[0181] The pig feed comprises 67.5 kg corn, 2.5 kg defatted rice bran, 17 kg soybean meal, 1.5 kg flour, 7.5 kg bran and 4 kg of the pig feed additive prepared in Example 2, which are fully stirred.

[0182] Example 7

[0183] Preparing pig feed

[0184] The pig feed comprises 67.5 kg corn, 2.5 kg defatted rice bran, 17 kg soybean meal, 1.5 kg flour, 7.5 kg bran and 6 kg of the pig feed additive prepared in Example 3, and the mixture is fully stirred.

[0185] Example 8

[0186] Preparing pig feed

[0187] The pig feed comprises 67.5 kg corn, 2.5 kg defatted rice bran, 17 kg soybean meal, 1.5 kg flour, 7.5 kg bran and 4 kg of the pig feed additive prepared in Example 4, and the mixture is fully stirred.

[0188] Comparative Example 6

[0189] Preparing pig feed

[0190] The pig feed comprises 67.5 kg corn, 2.5 kg defatted rice bran, 17 kg soybean meal, 1.5 kg flour, 7.5 kg bran and 4 kg of the pig feed additive prepared in Comparative Example 1, and the mixture is fully stirred.

[0191] Comparative Example 7

[0192] Preparing pig feed

[0193] The pig feed comprises 67.5 kg corn, 2.5 kg defatted rice bran, 17 kg soybean meal, 1.5 kg flour, 7.5 kg bran and 4 kg of the pig feed additive prepared in Comparative Example 2, and the mixture is fully stirred.

[0194] Comparative Example 8

[0195] Preparing pig feed

[0196] The pig feed comprises 67.5 kg corn, 2.5 kg defatted rice bran, 17 kg soybean meal, 1.5 kg flour, 7.5 kg bran and 6 kg of the pig feed additive prepared in Comparative Example 3, and the mixture is fully stirred.

[0197] Comparative Example 9

[0198] Preparing pig feed

[0199] The pig feed comprises 67.5 kg corn, 2.5 kg defatted rice bran, 17 kg soybean meal, 1.5 kg flour, 7.5 kg bran and 6 kg of the pig feed additive prepared in Comparative Example 4, and the mixture is fully stirred.

[0200] Comparative Example 10

[0201] Preparing pig feed

[0202] Pig feed contains 67.5kg corn, 2.5kg defatted rice bran, 17kg soybean meal, 1.5kg flour and 7.5kg bran. Mix them thoroughly.

[0203] Since January 1, 2020, it is completely prohibited to add antibiotics to feed, reduce the abuse of antibiotics, prevent bacterial resistance and drug residues, and maintain animal-derived food safety and public health safety. A pig farm in Guangzhou uses Huanglian Jiedu Powder to prevent diseases in fattening pigs on a daily basis. Some large white pigs develop symptoms of spleen deficiency such as loss of appetite and constipation after stopping the drug. The pig farm provided 85 120-day-old large white pigs weighing 100-150 kg in fattening period for this test project. They were randomly divided into 9 groups according to the principle of similar weight and fed in 9 pens with the same environment. Among them, 8 groups included 10 test pigs, numbered P1 to P8, and were fed with pig feeds prepared in Examples 5 to 8 and Comparative Examples 6 to 9, respectively; 1 group included 5 pigs, numbered P9, as a blank control group, fed with Comparative Example 10, and the test period was 14 days.

[0204] All experimental pigs in the experimental period were fed three times a day in a "feeding + free access to food + drinking water" mode. The breeding site should be kept clean and well ventilated.

[0205] First stage feeding test

[0206] Statistics were conducted on the experimental pigs’ feeding willingness, appetite, weight changes, and constipation improvement.

[0207] 1) The initial daily food intake of each experimental pig was recorded. An increase in food intake of ≥1kg was considered as an increase in appetite, otherwise it was considered as no significant increase in appetite.

[0208] 2) Record the initial weight of each test pig. On the morning of the 15th day, measure and record the weight of the test pigs before eating. If the final weight of each test pig increases by at least 7 kg relative to the initial weight, it is considered that the spleen deficiency disorder has improved and the nutrient absorption efficiency has gradually returned to normal. Otherwise, it is considered that the spleen deficiency disorder has not improved significantly and the nutrient absorption efficiency is low.

[0209] 3) The test pigs were numbered and marked to track their defecation. If each test pig had less than 2 defecations per day before the start of this test and still had less than 2 defecations per day after the start of this test, it was considered that the constipation had not improved; if the pig had at least 3 defecations per day and maintained for 3 consecutive days or more (i.e., the defecation returned to normal until the end of the test), it was considered that the constipation had improved; if the pig had more than 6 defecations per day and maintained for 2 days, it was considered that diarrhea symptoms had occurred.

[0210] The results of the first phase of feeding tests are as follows:

[0211] Group Number of tests Number of animals willing to eat Increased appetite Number of animals with weight gain ≥7kg Number of constipation improved P1 10 10 10 10 10 P2 10 10 10 10 10 P3 10 10 10 10 10 P4 10 10 10 10 10 P5 10 10 6 3 4 P6 10 10 6 4 4 P7 10 9 6 2 6 cases of constipation turned into mild diarrhea P8 10 9 7 1 5 cases of constipation turned into mild diarrhea P9 5 5 0 0 0

[0212] The test pigs with symptoms of spleen deficiency and constipation were willing to eat, but had problems of poor appetite (i.e., less food intake) and poor nutrient absorption. Groups P1 to P4 were fed with Examples 5 to 8, respectively. All the test pigs were willing to eat, and all showed increased appetite, weight gain and improved constipation. At the same time, it was further proved that the pig feed additives of Examples 1 to 4 had good storage stability. After 60 days of storage, the fattening pigs were still willing to eat. At the same time, it was proved that the present invention can effectively improve the symptoms of spleen deficiency and constipation in fattening pigs, which is beneficial to the growth and development of fattening pigs. During the 14-day test, the symptoms of P9 as a blank control group were still not improved, indicating that the symptom improvement of the P1 to P4 test pigs is indeed strongly correlated with feeding the pig feed designed by the present invention.

[0213] Although some test pigs in groups P5 and P6 also showed symptom improvement, the cure rate was not high, indicating that there was a synergistic effect among the components of the present invention, which improved not only the constipation situation but also the absorption efficiency of nutrients.

[0214] The cure rate of the test pigs in groups P7 and P8 was also low, and some of the test pigs even developed mild diarrhea from constipation after feeding. This may be because the proportion of alum and dimethyl hydrogen phosphate was too high, which was not conducive to weight gain and nutrient absorption.

[0215] Simulated transport test

[0216] If the physical condition of farmed Large White pigs is not good, they are very likely to have stress reactions during transportation. Therefore, after completing the above-mentioned first phase of feeding tests, this project conducted a simulated transportation test, dispatching 9 small pig transport vehicles to transport the test pigs P1 to P9 respectively, simulating the transportation route from pig farms to downstream buyers, and observing whether the test pigs have stress reactions.

[0217] The test results are as follows:

[0218] Group Number of tests Number of cases with stress Group Number of tests Number of cases with stress P1 10 0 P5 10 5 P2 10 0 P6 10 4 P3 10 0 P7 10 6 P4 10 0 P8 10 5 -- -- P9 10 4

[0219] None of the test pigs in groups P1 to P4 showed stress reactions, while 4 test pigs in P9, which served as the blank control group, showed stress reactions, indicating that feeding the present invention can effectively improve the anti-stress ability of fattening large white pigs; although the probability of stress occurrence in groups P5 to P8 is lower than that in the blank control group, it is higher than that in groups P1 to P4, indicating that in order to effectively improve the anti-stress ability of the test pigs, the synergy of each component and a specific proportion design are required.

[0220] Second stage feeding test

[0221] The test pigs in groups P5 to P8 that had undergone the above test were fed with Example 6 for a total of 14 days. The judgment criteria were the same as those for the first stage feeding test to observe whether the symptoms were improved. P9 was still used as a blank control group.

[0222] Group Number of tests Number of animals willing to eat Increased appetite Number of animals with weight gain ≥7kg Number of constipation improved P5 10 10 10 10 10 P6 10 10 10 10 10 P7 10 10 10 10 10 P8 10 10 10 10 10 P9 5 5 0 0 0

[0223] After the test pigs in groups P5 to P8 were switched to feeding Example 6, all the test pigs were willing to eat, and all showed increased appetite, weight gain and improved constipation, further demonstrating the importance of the components and component proportion design of the present invention.

[0224] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs may also change and modify the above implementation modes. Therefore, the present invention is not limited to the specific implementation modes disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention.

Claims

1. A pig feed additive for improving spleen deficiency constipation, characterized in that: It contains 25-35 parts of sodium sulfate, 15-25 parts of potassium dihydrogen phosphate, 5-10 parts of taurine, 3-8 parts of Chinese herbal medicine, 1-3 parts of yeast chromium and 38-58 parts of carrier; The Chinese herbal medicine comprises 35-45 parts of Poria cocos and 30-35 parts of jujube.

2. The pig feed additive for improving spleen deficiency constipation according to claim 1, characterized in that: The Chinese herbal medicine comprises 15 to 25 parts of cassia twig and 5 to 15 parts of liquorice.

3. The pig feed additive for improving spleen deficiency constipation according to claim 1 or 2, characterized in that: The carrier is one of rice bran, stone powder and calcium hydrogen phosphate or more than one of them mixed in any proportion.

4. The pig feed additive for improving spleen deficiency constipation according to claim 3, characterized in that: The carrier is defatted rice bran and calcium hydrogen phosphate mixed in a weight ratio of 7-9:1-3.

5. The method for preparing the pig feed additive for improving spleen deficiency constipation according to claims 1 to 4, characterized in that: The steps include: (1) crushing a preset weight portion of Chinese herbal medicine into 250-300 mesh, and then mixing it with a preset weight portion of potassium dihydrogen phosphate, taurine, and yeast chromium to prepare a solution with water as the solvent, and adding a thickener after fully stirring to adjust the viscosity to 50-80 cP to prepare a spray solution, which is added to a spray device for standby use; (2) a preset weight portion of sodium sulphate is spread on a material tray in at least one batch, the spread thickness of the sodium sulphate being at least 5 mm, and the spray device sprays the spray solution onto the upper surface of the spread sodium sulphate in at least one batch, and the spraying amount per unit area is based on the spray solution not infiltrating the bottom of the material tray after spraying; (3) preparing a preset weight amount of defatted rice bran and calcium bicarbonate but not mixing them, spraying the preset weight amount of defatted rice bran with water vapor at 100 to 120° C. until the water content of the defatted rice bran reaches at least 10%, then placing the defatted rice bran in an anaerobic environment, passing an anaerobic hot air flow at 120 to 150° C., treating the defatted rice bran again until the water content is at least less than 8%, and then mixing the defatted rice bran uniformly with the calcium bicarbonate to prepare a carrier mixture; (4) When the surface of each batch of materials prepared in step (2) is still in a wet state, a portion of the carrier mixture prepared in step (3) is spread on the surface thereof to a thickness not exceeding 3 mm, and the mixture is conveyed to a nip roller while being spread flat. The nip roller gently presses the carrier mixture into the surface of the wetted material in step (2), and the wetted material initially adheres to the carrier. The pressure of the nip roller is designed so as not to damage the rough porous structure of the surface of the carrier. (5) First, the material obtained in step (4) is scraped from the bottom of the feed tray by a scraper to make the material into a roll shape. The material at the bottom contacts the material at the top during the curling process and is transported to the stirring and drying equipment. If there is any remaining carrier mixed material, it is added to the stirring and drying equipment for stirring. The water control operation is performed to process the material to a moisture content of at least less than 8%, thereby obtaining the pig feed additive.

6. The method for preparing the pig feed additive for improving spleen deficiency constipation according to claim 5, characterized in that: In step (5), the water control operation is to stir at room temperature in an oxygen-free environment for 10 to 15 minutes, and then introduce an oxygen-free hot air flow at 120 to 150° C. until the water content of the material is at least less than 8%; Alternatively, a desiccant is added and mixed until the moisture content of the material is at least less than 8%.

7. The method for preparing the pig feed additive for improving spleen deficiency constipation according to claim 5 or 6, characterized in that: In step (2), the D80 particle size of the sodium sulphate is 150-200 mesh.

8. A pig feed, characterized in that: The invention comprises the pig feed additive according to any one of claims 1 to 7.

9. The pig feed according to claim 8, characterized in that The invention comprises 65 to 70 parts of corn, 1 to 4 parts of defatted rice bran, 15 to 20 parts of soybean meal, 1 to 2 parts of flour, 5 to 10 parts of bran and 2 to 6 parts of the above-mentioned pig feed additive.

10. Use of the pig feed additives according to claims 1 to 7 in products for preventing or improving spleen deficiency constipation in 100-150 kg fattening Large White pigs.

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