Highly immune growth-promoting functional feed for livestock and poultry and its preparation method

Abstract

The application discloses a high-immunity growth-promoting functional livestock and poultry feed and a preparation method thereof, and relates to the technical field of feed preparation.The functional livestock and poultry feed is prepared from the following components in parts by weight: corn 45-55 parts, soybean meal 20-28 parts, fermented soybean meal 8-12 parts, bran 5-10 parts, fish meal 2-5 parts, compound probiotic fermentation agent 1.5-3 parts, traditional Chinese medicine functional additive 2-4 parts, compound enzyme preparation 0.3-0.8 parts, compound trace element 0.5-1.2 parts, compound vitamin 0.2-0.5 parts, salt 0.2-0.4 parts, vegetable oil 1-2 parts and zeolite powder 1-3 parts.The functional livestock and poultry feed and the preparation method thereof have the multiple functions of intestinal regulation, immunity promotion and growth promotion, which are realized by scientific proportioning and synergistic compounding of the compound probiotic fermentation agent, the traditional Chinese medicine functional additive and the compound enzyme preparation.The compound probiotic bacteria regulate the microecological balance of the intestinal tract, the traditional Chinese medicine additive has the functions of heat-clearing and bacteriostasis and spleen-invigorating and food-promoting, and the compound enzyme preparation degrades the anti-nutritional factors and improves the digestive absorption rate, so that the three components are synergistically matched.

Description

Technical Field

[0001] This invention relates to the field of feed preparation technology, specifically to a high-immunity, growth-promoting functional livestock and poultry feed and its preparation method. Background Technology

[0002] With the increasing scale and intensification of livestock and poultry farming in my country, the density of livestock farming has increased and environmental stress has intensified, posing serious challenges to the intestinal health and immune function of livestock and poultry. As the core source of nutrition for livestock and poultry growth, the formulation design of feed directly affects farming efficiency, survival rate and economic benefits.

[0003] Currently, the industry mainly improves feed functionality through the following approaches: First, adding feed antibiotics or chemical growth promoters to inhibit pathogens and promote growth. However, long-term use can easily lead to drug residues and drug-resistant strains in livestock and poultry, which is inconsistent with the trend of antibiotic-free farming. Second, adding probiotic preparations to the basal diet to regulate intestinal flora, or adding traditional Chinese medicine ingredients to enhance immunity, or adding compound enzyme preparations to improve digestibility. However, these single approaches face significant shortcomings: although probiotics can colonize the intestines, their ability to repair existing intestinal inflammation is limited, and their survival rate is low under conventional high-temperature pelleting. Although traditional Chinese medicine additives have antibacterial and immunomodulatory effects, their effect on promoting the degradation and absorption of feed nutrients is insufficient. Although enzyme preparations can degrade anti-nutritional factors, they lack the ability to actively regulate the intestinal microecology. The three approaches have independent mechanisms of action and lack synergy, making it difficult to simultaneously address the multiple needs of intestinal conditioning, immune enhancement, and growth promotion.

[0004] Furthermore, existing functional feeds often employ high-temperature pelleting in their preparation processes, leading to a significant decrease in the activity of probiotics and the potency of enzyme preparations during processing, making it difficult for functional components to remain stably in the finished product. How to achieve multiple synergistic effects of probiotics, functional components of traditional Chinese medicine, and enzyme preparations in a single formulation system, while ensuring the activity and stability of each functional component under low-temperature preparation processes, is a pressing technical problem that needs to be solved in the current research and development of functional livestock and poultry feeds. To address this, we propose a high-immunity, growth-promoting functional livestock and poultry feed and its preparation method. Summary of the Invention

[0005] To address the aforementioned technical issues, a high-immunity, growth-promoting functional livestock and poultry feed is provided, comprising the following components in parts: 45-55 parts corn, 20-28 parts soybean meal, 8-12 parts fermented soybean meal, 5-10 parts wheat bran, 2-5 parts fish meal, 1.5-3 parts compound probiotic fermentation agent, 2-4 parts traditional Chinese medicine functional additives, 0.3-0.8 parts compound enzyme preparation, 0.5-1.2 parts compound trace elements, 0.2-0.5 parts compound vitamins, 0.2-0.4 parts salt, 1-2 parts vegetable oil, and 1-3 parts zeolite powder.

[0006] Preferably, the ingredients are composed of the following proportions: 50 parts corn, 25 parts soybean meal, 10 parts fermented soybean meal, 8 parts wheat bran, 3 parts fish meal, 2 parts compound probiotic fermentation agent, 3 parts traditional Chinese medicine functional additives, 0.5 parts compound enzyme preparation, 0.8 parts compound trace elements, 0.3 parts compound vitamins, 0.3 parts salt, 1.5 parts vegetable oil, and 2 parts zeolite powder.

[0007] Preferably, the compound probiotic starter is composed of Bacillus subtilis, Bacillus licheniformis, Lactobacillus plantarum, and yeast in a live bacteria ratio of 2:1:2:1, with a total live bacteria count of 2.010. 9 CFU / g.

[0008] Preferably, the traditional Chinese medicine functional additive is made by pulverizing and mixing the following raw materials in parts by weight: 15-25 parts of Astragalus membranaceus, 8-15 parts of Glycyrrhiza uralensis, 10-20 parts of Taraxacum mongolicum, 5-12 parts of Lonicera japonica, 8-15 parts of Crataegus pinnatifida, 6-12 parts of Citrus reticulata peel, and 3-8 parts of Artemisia argyi.

[0009] Preferably, the compound enzyme preparation is composed of cellulase, protease, amylase and phytase in an enzyme activity ratio of 3:2:2:1, with a total enzyme activity of 10000 U / g; the compound trace elements include iron, zinc, manganese, copper and selenium, all of which are organic trace elements specifically for livestock and poultry feed.

[0010] A method for preparing a highly immune and growth-promoting functional livestock and poultry feed is also provided, the preparation steps of which are as follows: S1. Raw material pretreatment: Corn, soybean meal, wheat bran, fermented soybean meal and fish meal are crushed and sieved separately to obtain powdered basic raw materials for later use; the raw materials of traditional Chinese medicine functional additives are crushed and sieved, and mixed evenly to obtain traditional Chinese medicine premixed powder. S2. Premix preparation: Mix the compound enzyme preparation, compound trace elements, compound vitamins, salt, and zeolite powder for 5-10 minutes to prepare a functional premix. S3. Mixing and stirring: Put the pretreated basic raw materials into a horizontal mixer, add the Chinese herbal medicine premix powder and functional premix, stir at low speed for 10-15 minutes, add vegetable oil after stirring evenly, and continue stirring for 3-5 minutes to obtain the mixture. S4. Fermentation treatment: Spray the compound probiotic fermentation agent aqueous solution evenly into the mixture, stir evenly, control the moisture content of the material to 13%-18%, the temperature to 28-32℃, and carry out closed anaerobic fermentation for 24-36 hours. S5. Drying and granulation: Place the fermented material in a low-temperature cooling device and dry it at 45-55℃ until the moisture content is 12%. After cooling, it is granulated into 3-5mm pellets. After screening to remove impurities, the finished functional livestock and poultry feed is obtained.

[0011] Preferably, in step S1, corn, soybean meal, wheat bran, fermented soybean meal, and fish meal are pulverized and passed through a 40-60 mesh sieve; each raw material of the traditional Chinese medicine functional additive is pulverized and passed through an 80 mesh sieve, weighed according to the weight ratio, and mixed evenly to obtain a traditional Chinese medicine premixed powder for later use.

[0012] Preferably, the preparation method of the compound probiotic fermentation agent aqueous solution in step S4 is as follows: the compound probiotic fermentation agent and sterile warm water are mixed at a weight ratio of 1:50, activated at room temperature for 15-20 minutes, and then evenly sprayed into the mixture.

[0013] Preferably, the low-temperature drying temperature in step S5 is 45-55℃. After drying to a material moisture content of 12%, the material is cooled to room temperature and then pelleted into 3-5mm pellets using a pellet mill. The finished product is obtained after screening with a vibrating screen to remove powder and unqualified pellets.

[0014] Preferably, the feed is suitable for use in the entire breeding process of various livestock and poultry, including piglets, fattening pigs, broilers, laying hens, ducks, and geese.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The functional livestock and poultry feed and its preparation method proposed in this invention achieve multiple functional couplings of intestinal conditioning, immune enhancement, and growth promotion through the scientific ratio and synergistic compounding of compound probiotic fermentation agents, traditional Chinese medicine functional additives, and compound enzyme preparations. Specifically, the compound probiotics colonize the intestines and regulate the microecological balance; the traditional Chinese medicine additives clear heat, inhibit bacteria, strengthen the spleen, and promote appetite; and the compound enzyme preparations degrade anti-nutritional factors and improve digestibility. The synergistic effect of these three components significantly improves diarrhea rate control, weight gain, and feed conversion ratio compared to functional feeds that only add probiotics, traditional Chinese medicine, or enzyme preparations. The use of low-temperature fermentation and low-temperature drying granulation processes helps retain the activity of probiotics, the effective components of traditional Chinese medicine, and the potency of enzyme preparations, ensuring the functional stability of the finished feed. By combining the natural antibacterial components of traditional Chinese medicine with probiotics for biological disease prevention, the traditional antibiotic growth promotion model is replaced, reducing drug residues and the risk of drug resistance, thus meeting the needs of antibiotic-free farming. The formula uses readily available and conventional raw materials, suitable for various types of livestock and poultry such as pigs, chickens, ducks, and geese, demonstrating good versatility and feasibility for industrial-scale production. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the preparation process of the present invention. Detailed Implementation

[0017] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0018] A high-immunity, growth-promoting functional livestock and poultry feed is composed of the following ingredients in parts: Corn 45-55 parts, soybean meal 20-28 parts, fermented soybean meal 8-12 parts, wheat bran 5-10 parts, fish meal 2-5 parts, compound probiotic fermentation agent 1.5-3 parts, traditional Chinese medicine functional additives 2-4 parts, compound enzyme preparation 0.3-0.8 parts, compound trace elements 0.5-1.2 parts, compound vitamins 0.2-0.5 parts, salt 0.2-0.4 parts, vegetable oil 1-2 parts, zeolite powder 1-3 parts. Corn serves as the basic energy source, providing starchy carbohydrates; soybean meal and fermented soybean meal together provide a source of plant protein. Fermented soybean meal undergoes microbial fermentation, which degrades anti-nutritional factors such as trypsin inhibitors and allergenic proteins, increasing the content of small peptides and making it more easily absorbed by the intestines of livestock and poultry; wheat bran provides dietary fiber, which helps promote intestinal peristalsis; fish meal provides high-quality animal protein and essential amino acids, supplementing the deficiencies of lysine and methionine in plant protein; salt maintains electrolyte balance; vegetable oil supplements lipid energy and essential fatty acids; zeolite powder, as a carrier and adsorbent, helps to evenly disperse the premix and can also adsorb harmful metabolites in the intestines.

[0019] Specifically, it consists of the following ingredients in the following proportions: 50 parts corn, 25 parts soybean meal, 10 parts fermented soybean meal, 8 parts wheat bran, 3 parts fish meal, 2 parts compound probiotic fermentation agent, 3 parts traditional Chinese medicine functional additives, 0.5 parts compound enzyme preparation, 0.8 parts compound trace elements, 0.3 parts compound vitamins, 0.3 parts salt, 1.5 parts vegetable oil, and 2 parts zeolite powder.

[0020] The compound probiotic fermentation agent is composed of Bacillus subtilis, Bacillus licheniformis, Lactobacillus plantarum, and yeast in a live bacteria ratio of 2:1:2:1, with a total live bacteria count of 2.010. 9 CFU / g.

[0021] Bacillus subtilis and Bacillus licheniformis are aerobic spore-forming bacteria that can survive in spore form during feed pelleting. After entering the intestines of livestock and poultry, they quickly germinate and colonize, consuming free oxygen in the intestines to create an anaerobic environment and secreting antimicrobial peptides to inhibit the reproduction of harmful bacteria such as Escherichia coli and Salmonella. Lactobacillus plantarum is an anaerobic lactic acid bacterium that produces lactic acid and short-chain fatty acids after colonizing the intestines, lowering the intestinal pH, inhibiting the growth of pathogenic bacteria, and repairing damaged intestinal mucosa. Yeast provides cell protein and β-glucan, the latter of which can activate macrophages and enhance the body's immune response.

[0022] The four strains of bacteria were mixed in a live bacteria ratio of 2:1:2:1. The aerobic and anaerobic bacteria worked together. First, Bacillus consumed oxygen to create anaerobic conditions, and then Lactobacillus plantarum colonized and produced acid, forming a gradient of intestinal colonization from shallow to deep, avoiding the problem of insufficient colonization depth of a single bacterial species.

[0023] The traditional Chinese medicine functional additive is made by pulverizing and mixing the following raw materials in parts by weight: Astragalus membranaceus 15-25 parts, Glycyrrhiza uralensis 8-15 parts, Taraxacum mongolicum 10-20 parts, Lonicera japonica 5-12 parts, Crataegus pinnatifida 8-15 parts, Citrus reticulata 6-12 parts, and Artemisia argyi 3-8 parts.

[0024] Astragalus contains astragalus polysaccharides and astragalus saponins. Astragalus polysaccharides can promote the proliferation of T lymphocytes and the activation of macrophages, thereby enhancing the body's cellular and humoral immunity. Licorice contains glycyrrhizic acid and glycyrrhetinic acid, which have anti-inflammatory and corticosteroid-like effects and can alleviate immunosuppression in livestock and poultry under stress. Dandelion contains taraxasterol and taraxacin, which have broad-spectrum antibacterial effects and are particularly effective against Staphylococcus aureus and Streptococcus. Honeysuckle contains chlorogenic acid and luteolin, which have heat-clearing, detoxifying, and antiviral properties, and can prevent respiratory and intestinal infections in livestock and poultry. Hawthorn contains hawthorn acid and organic acids, which can promote gastric juice secretion, enhance appetite, and accelerate feed digestion. Dried tangerine peel contains volatile oils and hesperidin, which regulate qi, strengthen the spleen, and promote intestinal peristalsis; mugwort contains eucalyptol and thujone, which warm the meridians, dispel cold, inhibit bacteria, and expel parasites. After being pulverized and mixed, the above seven Chinese herbs complement each other in four dimensions: promoting appetite, inhibiting bacteria, regulating immunity, and resisting stress. The dosage of each herb is controlled within 3% of the total feed to avoid the negative impact of large doses of Chinese herbs on feed palatability.

[0025] The compound enzyme preparation is composed of cellulase, protease, amylase and phytase in an enzyme activity ratio of 3:2:2:1, with a total enzyme activity of 10,000 U / g.

[0026] Cellulase degrades cellulose-based anti-nutritional factors in feed and breaks down plant cell walls to release intracellular nutrients; proteases hydrolyze large protein molecules into small peptides and free amino acids, compensating for insufficient endogenous protease secretion in young livestock and poultry. Amylase supplements endogenous amylase activity, improving the degradation efficiency of starch after gelatinization; phytase decomposes phytic acid phosphorus, releasing phosphorus and trace elements chelated by phytic acid, reducing the amount of inorganic phosphorus added and lowering phosphorus emissions in feces. The enzyme activity ratio of 3:2:2:1 corresponds to the relative content of cellulose, protein, starch, and phytic acid phosphorus in feed ingredients, ensuring that the target of each enzyme preparation is matched with the abundance of the substrate, avoiding excess or deficiency of any one enzyme activity.

[0027] The compound trace elements include iron, zinc, manganese, copper, and selenium, all of which are organic trace elements specifically for livestock and poultry feed. The organic trace elements are in the form of amino acid chelates, with iron provided as glycine iron, participating in hemoglobin synthesis and oxygen transport; zinc is provided as methionine zinc, participating in the cofactor formation of various enzymes and immune cell differentiation. Manganese is provided in the form of glycine manganese, participating in bone development and carbohydrate metabolism; copper is provided in the form of lysine copper, participating in hematopoiesis and hair pigmentation; selenium is provided in the form of yeast selenium, participating in antioxidant defense as a component of glutathione peroxidase. Compared with inorganic salt forms, the chelated structure of organic trace elements can avoid the formation of insoluble precipitates with components such as phytic acid in the intestine, resulting in higher absorption and utilization rates.

[0028] Reference Figure 1 As shown, a method for preparing a functional livestock and poultry feed with high immunity and growth promotion includes the following steps: S1. Raw Material Pretreatment: Corn, soybean meal, wheat bran, fermented soybean meal, and fishmeal are crushed and sieved separately to obtain powdered basic raw materials for later use. The raw materials for the traditional Chinese medicine functional additives are crushed and sieved, then mixed evenly to obtain a traditional Chinese medicine premixed powder. The basic raw materials are crushed and sieved through a 40-60 mesh sieve to control the particle size between 250-420 μm. If the particle size is too fine, there will be excessive dust and poor palatability; if the particle size is too coarse, the mixing will be uneven and affect subsequent granulation. The traditional Chinese medicine raw materials are crushed and sieved through an 80 mesh sieve to control the particle size below 180 μm. Since the amount of traditional Chinese medicine added only accounts for 2%-4% of the total feed, a finer particle size is required for even dispersion in the feed. Furthermore, the smaller the particle size, the faster the dissolution rate of the effective components of the traditional Chinese medicine, and the easier it is to extract and release them during fermentation.

[0029] S2. Premixing: Mix the compound enzyme preparation, compound trace elements, compound vitamins, salt, and zeolite powder for 5-10 minutes to prepare a functional premix. Since the above components constitute a small proportion of the feed, they are difficult to disperse evenly when added directly to the base ingredients. Therefore, zeolite powder is used as a carrier for premixing and dilution, allowing the trace components to adsorb onto the porous surface of the zeolite powder. This ensures uniform distribution when mixed with the bulk ingredients. The mixing time should be controlled at 5-10 minutes; insufficient time will result in uneven mixing, while excessive time will cause secondary segregation due to differences in particle size and specific gravity of the trace components.

[0030] S3. Mixing and Stirring: Add the pretreated base materials to a horizontal mixer, along with the traditional Chinese medicine premix powder and functional premix. Stir at low speed for 10-15 minutes. After mixing evenly, add vegetable oil and continue stirring for 3-5 minutes to obtain the mixture. Low-speed stirring is used to avoid excessive frictional heat generated by high-speed stirring, which could reduce the activity of enzymes and probiotics. Stirring for 10-15 minutes ensures thorough mixing of the bulk raw materials and premix. The vegetable oil is added at the last stage because coating the powder surface with oil would hinder water penetration and the even distribution of probiotics during subsequent fermentation. Delaying its addition allows for uniform mixing of the dry powder materials before the oil coating occurs.

[0031] S4. Fermentation Treatment: Evenly spray the compound probiotic fermentation agent aqueous solution onto the mixed materials, stir evenly, control the material moisture content to 13%-18%, and the temperature to 28-32℃. Perform closed anaerobic fermentation for 24-36 hours. A moisture content of 13%-18% is crucial; below 13%, microbial metabolic activity is limited, and fermentation is insufficient; above 18%, the material becomes too sticky, fermentation heat is difficult to dissipate, easily leading to localized overheating and the proliferation of other microorganisms. A temperature of 28-32℃ is the suitable growth temperature range for Bacillus subtilis and Lactobacillus plantarum. Below 28℃, fermentation starts slowly; above 32℃, excessive yeast proliferation consumes nutrients and produces more alcohol, affecting palatability. Closed anaerobic conditions promote the dominant proliferation of anaerobic bacteria such as Lactobacillus plantarum, while inhibiting the growth of aerobic bacteria. Fermentation for 24-36 hours allows the lactic acid content in the material to rise to a suitable level, the pH to drop to 4.5-5.0, and the feed to develop an alcoholic aroma, significantly improving palatability.

[0032] The preparation method of the compound probiotic starter aqueous solution in step S4 is as follows: Mix the compound probiotic starter with sterile warm water at a weight ratio of 1:50, activate at room temperature for 15-20 minutes, and then spray evenly into the mixture. The temperature of the sterile warm water is controlled at 35-40℃. At this temperature, Bacillus and lactic acid bacteria can quickly recover their metabolic activity from dormancy. If the water temperature is too high, the bacterial protein will denature and become inactive; if it is too low, the activation rate will be slow. Activation for 15-20 minutes allows the bacteria to recover their metabolic activity but has not yet entered the logarithmic growth phase to consume the culture medium. Spraying immediately after activation ensures that the bacteria enter the material fermentation system with high activity. Adding by spraying ensures that the bacterial solution is evenly distributed in the material, avoiding uneven fermentation caused by excessively high or low local bacterial concentrations.

[0033] S5. Drying and Granulation: The fermented material is placed in a low-temperature cooling device and dried at 45-55℃ until the moisture content reaches 12%. After cooling, it is granulated into 3-5mm pellets. After screening to remove impurities, the finished functional livestock and poultry feed is obtained. The drying temperature is limited to 45-55℃. This temperature range can effectively evaporate the moisture in the material, while controlling the internal temperature of the material below the heat inactivation temperature of probiotics and enzyme preparations. Bacillus subtilis spores can withstand high temperatures above 80℃, but Lactobacillus plantarum is largely inactivated above 60℃. The activity of protease and amylase in compound enzyme preparations drops sharply above 55℃. Therefore, the drying temperature should not exceed 55℃. Reducing the moisture content to below 12% can inhibit the secondary reproduction of microorganisms during storage and extend the shelf life. The pellet size of 3-5mm is suitable for the feeding requirements of major livestock and poultry breeds such as pigs, chickens, ducks, and geese. If the pellet size is too small, the pulverization rate will be high and the feed waste will be large. If the pellet size is too large, it will be difficult for young livestock and poultry to eat.

[0034] The feed described herein is suitable for use in the entire breeding process of various livestock and poultry, including piglets, fattening pigs, broilers, laying hens, ducks, and geese. Different livestock and poultry breeds have different nutritional requirements at different growth stages. When using the feed, the proportions of each component can be adjusted within the range of claim 1 according to the target breed and growth stage. In the early stages, the proportion of fermented soybean meal and fishmeal should be appropriately increased to increase the supply of easily digestible protein, and in the fattening stage, the proportion of corn should be appropriately increased to meet energy requirements.

[0035] To verify the functional effects of the feed of the present invention, comparative examples are set up as follows.

[0036] Forty Duroc-Landrace-Landrace-Landrace-Landrace-Landrace-Landrace-Fattening pigs weighing 201kg and in uniform health were selected and randomly divided into four groups of 10 pigs each. They were housed in individual pens, with a pre-trial period of 7 days and a formal trial period of 30 days.

[0037] The experimental group was fed the feed formulated in Example 1 of this invention; the control group was fed a basic diet, which was the same basic formula without compound probiotic fermentation agent, traditional Chinese medicine functional additives and compound enzyme preparations. Control group 2 was prepared by adding 50 mg / kg chlortetracycline to the basal diet of control group 1 as an antibiotic growth-promoting control. Control group 3 was fed the same amount of compound probiotic fermentation agent as in Example 1 to the basal diet of control group 1, without any traditional Chinese medicine functional additives or compound enzyme preparations.

[0038] All groups were kept in the same rearing environment, feeding method, and immunization program, with free access to feed and water. The results showed that the average daily weight gain of the fattening pigs in the experimental group was 782g, compared to 639g in control group 1, 718g in control group 2, and 708g in control group 3. The experimental group showed a 22.3% increase compared to control group 1, an 8.9% increase compared to antibiotic control group 2, and a 10.5% increase compared to single probiotic control group 3. The feed conversion ratio (FCR) was 2.41 in the experimental group, 2.96 in control group 1, 2.72 in control group 2, and 2.78 in control group 3. The diarrhea rate was 1.8% in the experimental group, 12.5% ​​in control group 1, 4.6% in control group 2, and 6.2% in control group 3.

[0039] The above data show that the experimental group showed significant improvements in weight gain, feed conversion ratio, and diarrhea rate compared to the basal diet group, proving the overall effectiveness of the functional components. The experimental group was superior to the antibiotic group in promoting growth and had no drug residues, demonstrating its potential as an alternative to antibiotics. The experimental group was significantly better than the single probiotic group in all indicators, indicating a synergistic effect between compound probiotics, traditional Chinese medicine functional additives, and compound enzyme preparations. The addition of a single probiotic cannot achieve the synergistic effect of the three components.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A functional livestock and poultry feed with high immunity and growth promotion, characterized in that, It consists of the following ingredients in parts: 45-55 parts corn, 20-28 parts soybean meal, 8-12 parts fermented soybean meal, 5-10 parts wheat bran, 2-5 parts fish meal, 1.5-3 parts compound probiotic fermentation agent, 2-4 parts traditional Chinese medicine functional additives, 0.3-0.8 parts compound enzyme preparation, 0.5-1.2 parts compound trace elements, 0.2-0.5 parts compound vitamins, 0.2-0.4 parts salt, 1-2 parts vegetable oil, and 1-3 parts zeolite powder.

2. The high-immunity, growth-promoting functional livestock and poultry feed according to claim 1, characterized in that, Specifically, it consists of the following ingredients in the following proportions: 50 parts corn, 25 parts soybean meal, 10 parts fermented soybean meal, 8 parts wheat bran, 3 parts fish meal, 2 parts compound probiotic fermentation agent, 3 parts traditional Chinese medicine functional additives, 0.5 parts compound enzyme preparation, 0.8 parts compound trace elements, 0.3 parts compound vitamins, 0.3 parts salt, 1.5 parts vegetable oil, and 2 parts zeolite powder.

3. The high-immunity, growth-promoting functional livestock and poultry feed according to claim 1, characterized in that, The compound probiotic starter is composed of Bacillus subtilis, Bacillus licheniformis, Lactobacillus plantarum, and yeast in a live bacteria ratio of 2:1:2:1, with a total live bacteria count of 2.

010. 9 CFU / g.

4. The high-immunity, growth-promoting functional livestock and poultry feed according to claim 1, characterized in that, The traditional Chinese medicine functional additive is made by pulverizing and mixing the following raw materials in parts by weight: Astragalus membranaceus 15-25 parts, Glycyrrhiza uralensis 8-15 parts, Taraxacum mongolicum 10-20 parts, Lonicera japonica 5-12 parts, Crataegus pinnatifida 8-15 parts, Citrus reticulata 6-12 parts, and Artemisia argyi 3-8 parts.

5. The high-immunity, growth-promoting functional livestock and poultry feed according to claim 1, characterized in that, The compound enzyme preparation is composed of cellulase, protease, amylase and phytase in an enzyme activity ratio of 3:2:2:1, with a total enzyme activity of 10000 U / g; the compound trace elements include iron, zinc, manganese, copper and selenium, all of which are organic trace elements specifically for livestock and poultry feed.

6. A method for preparing a highly immune-boosting and growth-promoting functional livestock and poultry feed, characterized in that, The preparation steps are as follows: S1. Raw material pretreatment: Corn, soybean meal, wheat bran, fermented soybean meal and fish meal are crushed and sieved separately to obtain powdered basic raw materials for later use; the raw materials of traditional Chinese medicine functional additives are crushed and sieved, and mixed evenly to obtain traditional Chinese medicine premixed powder. S2. Premix preparation: Mix the compound enzyme preparation, compound trace elements, compound vitamins, salt, and zeolite powder for 5-10 minutes to prepare a functional premix. S3. Mixing and stirring: Put the pretreated basic raw materials into a horizontal mixer, add the Chinese herbal medicine premix powder and functional premix, stir at low speed for 10-15 minutes, add vegetable oil after stirring evenly, and continue stirring for 3-5 minutes to obtain the mixture. S4. Fermentation treatment: Spray the compound probiotic fermentation agent aqueous solution evenly into the mixture, stir evenly, control the moisture content of the material to 13%-18%, the temperature to 28-32℃, and carry out closed anaerobic fermentation for 24-36 hours. S5. Drying and granulation: Place the fermented material in a low-temperature cooling device and dry it at 45-55℃ until the moisture content is 12%. After cooling, it is granulated into 3-5mm pellets. After screening to remove impurities, the finished functional livestock and poultry feed is obtained.

7. The method for preparing a high-immunity, growth-promoting functional livestock and poultry feed according to claim 6, characterized in that, In step S1, corn, soybean meal, wheat bran, fermented soybean meal, and fish meal are pulverized and passed through a 40-60 mesh sieve; each raw material of the traditional Chinese medicine functional additive is pulverized and passed through an 80 mesh sieve. They are weighed according to the weight ratio, mixed evenly, and the traditional Chinese medicine premixed powder is prepared for use.

8. The method for preparing a high-immunity, growth-promoting functional livestock and poultry feed according to claim 6, characterized in that, The preparation method of the compound probiotic fermentation agent aqueous solution in step S4 is as follows: mix the compound probiotic fermentation agent with sterile warm water at a weight ratio of 1:50, activate at room temperature for 15-20 minutes, and spray evenly into the mixture.

9. A method for preparing a high-immunity, growth-promoting functional livestock and poultry feed according to claim 6, characterized in that, The low-temperature drying temperature described in step S5 is 45-55℃. After drying to a material moisture content of 12%, the material is cooled to room temperature and then pelleted into 3-5mm pellets using a pellet mill. The finished product is obtained after screening with a vibrating screen to remove powder and unqualified pellets.

10. A method for preparing a high-immunity, growth-promoting functional livestock and poultry feed according to claim 6, characterized in that, The feed is suitable for use in the entire breeding process of various livestock and poultry, including piglets, fattening pigs, broilers, laying hens, ducks, and geese.

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