Breeding method and special biological feed for small peptide chicken with liver protection effect

Abstract

The invention belongs to the technical field of poultry breeding, and particularly relates to a breeding method and special biological feed for small peptide chickens with the liver protecting effect. The breeding method comprises the following steps that S1, a breeding environment is constructed; s2, selecting chicken breeds; s3, feeding management: feeding special biological feed in a brooding period, a growing period and a fattening period respectively; s4, disease prevention and control. By optimizing the breeding environment, scientific feeding management and special biological feed, oxidative damage to the liver of the small peptide chicken can be remarkably relieved, the oxidation resistance can be enhanced, the growth speed and survival rate can be increased, the content of protein and unsaturated fatty acid in chicken can be increased, and liver-protecting, efficient and high-quality breeding can be achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of poultry breeding, and particularly relates to a breeding method and special biological feed for small peptide chickens with liver protection effects. Background Art

[0002] With the continued growth of the global population and the continuous improvement of people's living standards, the poultry industry, as a key industry in ensuring the supply of animal protein, plays a vital role in the global agricultural economy. Global chicken production has increased annually and is expected to exceed 120 million tons by 2025. However, as the industry rapidly expands, the health of chickens has gradually become a bottleneck restricting the sustainable development of the industry, with liver health being a particularly prominent issue.

[0003] The liver is a crucial metabolic and detoxification organ in chickens, responsible for numerous critical physiological functions, including nutrient metabolism, bile secretion, detoxification, and immune regulation. A healthy liver plays an irreplaceable role in maintaining normal physiological function, improving feed conversion efficiency, enhancing disease resistance, and ensuring chicken quality. However, under traditional poultry farming models, chickens face numerous threats to liver health. Firstly, nutritional imbalance in feed is a common problem. In pursuit of rapid growth and high yields, some farmers over-add protein and energy to their feed. This overloads the liver, preventing it from metabolizing and processing these nutrients, leading to liver diseases such as fatty liver and hepatomegaly.

[0004] Secondly, the abuse of antibiotics continues unabated in the livestock industry. In disease prevention and control efforts, many farmers blindly use large quantities of antibiotics to prevent and treat chicken diseases, even adding them to feed as growth promoters for extended periods. This irrational use not only disrupts the normal balance of intestinal flora in chickens but also increases the liver's detoxification burden, leading to liver cell damage and decreased detoxification function. Furthermore, antibiotic residues seriously impact the safety of chicken products, posing a potential threat to consumer health.

[0005] Furthermore, the breeding environment also significantly impacts the health of chicken livers. Traditional chicken houses often suffer from poor ventilation and improper temperature and humidity control. These factors can lead to excessive concentrations of harmful gases such as ammonia and hydrogen sulfide, which can foster the growth and proliferation of microorganisms. Chickens exposed to such harsh environments for long periods of time are highly susceptible to stress. The liver, a key stress-regulating organ, can become dysfunctional due to continuous stress, leading to decreased immunity and an increased risk of infection.

[0006] Furthermore, as consumer awareness of food safety and health continues to rise, demand for high-quality, safe, and healthy chicken products is growing. Traditionally farmed chicken, due to issues like drug residues and nutritional imbalances, is no longer able to meet market demand. Consumers are increasingly choosing chicken products with specialized health benefits, which are pollution-free and residue-free. For example, chicken with liver-protecting properties can, to some extent, satisfy consumers' pursuit of a healthier diet. However, chicken products with these health benefits are currently extremely scarce in the market, making large-scale production impossible and hindering market demand.

[0007] In summary, the development of a breeding method and special biological feed that can effectively protect the health of chicken livers, improve the quality of chicken, and conform to the green breeding concept and market demand has important practical significance and broad market prospects for promoting the sustainable development of the poultry farming industry and meeting consumers' demand for high-quality chicken products.

[0008] The information disclosed in this background technology section is only intended to enhance understanding of the overall background of the invention and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the Invention

[0009] The purpose of the present invention is to provide a breeding method and a special biological feed for chickens with small peptides having liver-protecting effects, so as to solve the problems existing in the prior art in the background technology.

[0010] To achieve the above object, the present invention provides the following technical solutions: A method for breeding chickens with small peptides having liver-protecting effects, comprising the following steps S1. Building a breeding environment Choose an area with good ventilation and convenient drainage as the breeding site and build a chicken house in the breeding site; S2. Choose the chicken breed Choose high-quality chicken breeds, with healthy chicks free of disease, weighing 35-45g out of the shell, and with neat and shiny down; S3. Feeding and Management Brooding period: The chicken house temperature is 32-35℃, and the relative humidity is maintained at 65-75%. The first three days are 24 hours of light with a light intensity of 20-30 lux. After that, the light is reduced by 1 hour per day until the transition to 12 hours of light per day with the light intensity adjusted to 10-15 lux. During the brooding period, the chickens are fed with special biological feed 6-8 times a day, with a feeding amount of 5-10g per bird per day. Growing period: The chicken house temperature is maintained at 20-25℃, the relative humidity is maintained at 60-65%, the light intensity is maintained at 12-14 hours per day, and the light intensity is 10-15lux; during the growing period, the chickens are fed with special biological feed 4-5 times a day, and the feeding amount is 15-25g per day; Fattening period: The chicken house temperature is maintained at 18-23℃, the relative humidity is maintained at 55-60%, the light intensity is maintained at 16 hours per day, and the light intensity is 15-20lux; during the rearing period, special biological feed is fed 3-4 times a day, and the feeding amount is 30-40g per day per chicken; S4. Disease Prevention and Control Chicken houses, breeding equipment and utensils should be disinfected regularly 2-3 times a week; at the same time, chickens should be vaccinated according to the local epidemic situation to prevent the occurrence of diseases.

[0011] Furthermore, in step S2, the chicken breeds are Sanhuang chicken and Qingyuan Ma chicken.

[0012] Furthermore, in step S3, the special biological feed is prepared from basic raw materials, small peptide components, plant extracts, probiotics and vitamins and minerals; in terms of mass percentage, the basic raw materials are composed of the following raw materials: 45-55% corn, 20-30% soybean meal, 5-10% wheat bran and the balance calcium hydrogen phosphate.

[0013] Furthermore, the addition amount of the small peptide component is 2-3% of the basic raw material; the small peptide component is small peptide protein powder, and the crude protein in the small peptide protein powder is ≥75%, moisture ≤10%, and ash ≤10%.

[0014] Furthermore, the added amount of the plant extract is 1-2% of the basic raw material; the plant extract is prepared by mixing Pueraria root extract, Licorice extract and Salvia miltiorrhiza extract in a mass ratio of 1:1:1.

[0015] Furthermore, the addition amount of the probiotics is 0.5-1% of the basic raw material; the probiotics are prepared by mixing Lactobacillus reuteri and Bifidobacterium adolescentis in a mass ratio of 1:1; the effective viable counts of Lactobacillus reuteri and Bifidobacterium adolescentis are respectively: 5×10 9 cfu / g and 3×10 9 cfu / g.

[0016] Furthermore, the vitamins and minerals include vitamin A, vitamin E, vitamin C, selenium and zinc, and their contents in the special biological feed are respectively: 5000-800 IU / kg, 20-30 mg / kg, 50-100 mg / kg, 0.1-0.3 mg / kg, 50-80 mg / kg.

[0017] Furthermore, the preparation method of the special biological feed is: crushing the basic raw materials through a 100-mesh sieve, adding small peptide components, plant extracts, probiotics and vitamins and minerals in proportion, stirring and mixing evenly, and then sending them to a granulator for granulation to make granular feed with a diameter of 2-3 mm, thereby obtaining the special biological feed.

[0018] Compared with the prior art, the present invention has the following beneficial effects: (1) The breeding method of the present invention reduces various stress and damage factors to the chicken liver by optimizing the breeding environment, scientific feeding management and disease prevention and control measures. The functional ingredients such as small peptide components, plant extracts, probiotics, vitamins and minerals added to the special biological feed work synergistically to effectively promote the repair and regeneration of liver cells, enhance the detoxification and metabolic functions of the liver, and improve the liver health level of chickens. Experimental tests showed that the small peptide chickens raised using the breeding method of the present invention and the special biological feed had a lower malondialdehyde (MDA) content in the liver tissue, and the activity of antioxidant enzymes such as superoxide dismutase and glutathione peroxidase was increased, indicating that the oxidative stress damage to the chicken liver was significantly reduced and the antioxidant capacity was significantly enhanced.

[0019] (2) Due to the good health of the chicken liver, the present invention improves the growth performance and disease resistance of the chicken, reducing the use of drugs. At the same time, the functional ingredients in the special biological feed have a positive impact on the nutritional composition of the chicken, thereby increasing the protein content and unsaturated fatty acid content of the chicken, thus meeting the consumer demand for high-quality, healthy chicken products.

[0020] (3) The health of young chickens is improved, their growth rate is accelerated, and their survival rate is increased, thereby reducing mortality and disease treatment costs during the breeding process. High-quality chicken products command higher prices in the market, significantly improving the economic benefits of breeding and enhancing the market competitiveness of breeders. DETAILED DESCRIPTION

[0021] The following is a clear and complete description of the technical solution of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts are within the scope of protection of the present invention.

[0022] Example 1: Breeding method A method for breeding chickens with small peptides having liver-protecting effects, comprising the following steps S1. Building a breeding environment Choose an area with good ventilation and convenient drainage as the breeding site and build a chicken house in the breeding site; S2. Choose the chicken breed Choose high-quality three-yellow chickens, which are healthy and disease-free, weigh 35-40g out of the shell, and have neat and shiny fur. S3. Feeding and Management Brooding period (0-21 days): The chicken house temperature is 33°C and the relative humidity is maintained at 65%. The first 3 days are to use 24-hour lighting with a light intensity of 25 lux. Thereafter, the light intensity is reduced by 1 hour per day until the transition to 12 hours of light per day with a light intensity adjusted to 15 lux. During the brooding period, the chickens are fed with special biological feed 8 times a day, with a feeding amount of 8g per bird per day. Growing period: The chicken house temperature is maintained at 25°C, the relative humidity is maintained at 60%, the light intensity is maintained at 14 hours per day, and the light intensity is 15 lux; during the growing period, the chickens are fed with special biological feed 5 times a day, with a feeding amount of 20g per chicken per day; Fattening period: The chicken house temperature is maintained at 20℃, the relative humidity is maintained at 55%, the light intensity is maintained at 16 hours per day, and the light intensity is 20lux; during the rearing period, the chickens are fed with special biological feed 4 times a day, with a feeding amount of 35g per chicken per day; S4. Disease Prevention and Control Chicken houses, breeding equipment and utensils are disinfected regularly, three times a week; at the same time, chickens are vaccinated according to the local epidemic situation to prevent the occurrence of diseases.

[0023] In step S3 of this embodiment, the dedicated biological feed is prepared from basic raw materials, small peptide components, plant extracts, probiotics, and vitamins and minerals; the basic raw materials are composed of the following raw materials in percentage by mass: 55% corn, 30% soybean meal, 10% wheat bran, and the balance calcium hydrogen phosphate; the addition amount of the small peptide component is 2% of the basic raw materials; the small peptide component is small peptide protein powder (purchased from Hebei Huapin Biotechnology Co., Ltd., head image Hebei Huapin Biotechnology Co., Ltd., small peptide protein powder containing ≥75% crude protein, ≤10% moisture, and ≤10% ash); The added amount of the plant extract is 1.5% of the basic raw material; the plant extract is prepared by mixing Pueraria root extract (purchased from Baoji Liupanyun Biotechnology Co., Ltd., specification 20:1), Licorice extract (purchased from Baoji Liupanyun Biotechnology Co., Ltd., specification 20:1) and Salvia miltiorrhiza extract (purchased from Baoji Liupanyun Biotechnology Co., Ltd., specification 10:1) in a mass ratio of 1:1:1; The amount of probiotics added is 0.75% of the basic raw material; the probiotics are prepared by mixing Lactobacillus reuteri (BNCC192190) and Bifidobacterium adolescentis (BNCC185973) in a mass ratio of 1:1; the effective viable counts of Lactobacillus reuteri and Bifidobacterium adolescentis are respectively: 5×10 9 cfu / g and 3×10 9 cfu / g; The vitamins and minerals include vitamin A, vitamin E, vitamin C, selenium and zinc, and their contents in the special biological feed are respectively 5000-800 IU / kg, 20-30 mg / kg, 50-100 mg / kg, 0.1-0.3 mg / kg and 50-80 mg / kg.

[0024] The preparation method of the special biological feed is as follows: the basic raw materials are crushed through a 100-mesh sieve, small peptide components, plant extracts, probiotics and vitamins and minerals are added in proportion, the mixture is stirred and evenly mixed, and the mixture is sent to a granulator for granulation to prepare granular feed with a diameter of 2-3 mm, thereby obtaining the special biological feed.

[0025] Comparative Example 1 The only difference from Example 1 is that no small peptide component is added to the special biological feed.

[0026] Comparative Example 2 The only difference from Example 1 is that no plant extract is added to the special biological feed.

[0027] Comparative Example 3 The only difference from Example 1 is that no probiotics are added to the special biological feed.

[0028] Example 2: Effects of different feeds on poultry chicken farming Poultry chickens were fed using the farming methods described in Example 1 and Comparative Examples 1-3, respectively. Three replicates were set for each farming method, with 100 Sanhuang chicken chicks in each replicate, and the feeding period was 90 days. The effects of different feeds on poultry chicken farming were determined, and the results are shown in Tables 1-3.

[0029] Table 1 Effects of different feeds on poultry chicken liver

[0030] As shown in Table 1, the malondialdehyde content of Example 1 is significantly lower than that of Comparative Examples 1-3, indicating that liver oxidative damage is significantly reduced; in addition, the superoxide dismutase activity and glutathione peroxidase activity are significantly higher than those of Comparative Examples 1-3, indicating that the liver's antioxidant and detoxification abilities are significantly enhanced.

[0031] Table 2 Effects of different feeds on poultry growth

[0032] As shown in Table 2, the average daily weight gain of Example 1 is significantly higher than that of Comparative Examples 1-3, the feed-to-meat ratio is significantly lower than that of Comparative Examples 1-3, and the survival rate is significantly improved. This shows that the breeding method of the present invention can achieve fast growth of poultry chickens, high feed utilization rate, and low health risks.

[0033] Table 3 Effects of different feeds on poultry chicken quality

[0034] As shown in Table 3, the protein content and unsaturated fatty acid content of Example 1 are significantly improved, indicating that the nutritional value and flavor of the chicken are significantly optimized.

[0035] In summary, the present invention can significantly reduce oxidative damage to the liver of small peptide chickens, enhance antioxidant capacity, increase growth rate and survival rate, and increase the protein and unsaturated fatty acid content of chickens by optimizing the breeding environment, scientific feeding management and special biological feed, thereby achieving liver protection, high efficiency and high-quality breeding.

[0036] The foregoing descriptions of specific exemplary embodiments of the present invention are for purposes of illustration and description. These descriptions are not intended to limit the invention to the precise forms disclosed, and it is apparent that many variations and modifications are possible in light of the foregoing teachings. The exemplary embodiments have been selected and described for the purpose of explaining the specific principles of the invention and their practical application, thereby enabling those skilled in the art to realize and utilize a variety of exemplary embodiments of the invention and various options and modifications. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims

1. A method for breeding chickens with small peptides having liver-protecting effects, characterized in that: The following steps are included S1. Building a breeding environment Choose an area with good ventilation and convenient drainage as the breeding site and build a chicken house in the breeding site; S2. Choose the chicken breed Choose high-quality chicken breeds, with healthy chicks free of disease, weighing 35-45g out of the shell, and with neat and shiny down; S3. Feeding and Management Brooding period: The chicken house temperature is 32-35℃, and the relative humidity is maintained at 65-75%. The first three days are 24 hours of light with a light intensity of 20-30 lux. After that, the light is reduced by 1 hour per day until the transition to 12 hours of light per day with the light intensity adjusted to 10-15 lux. During the brooding period, the chickens are fed with special biological feed 6-8 times a day, with a feeding amount of 5-10g per bird per day. Growing period: The chicken house temperature is maintained at 20-25℃, the relative humidity is maintained at 60-65%, the light intensity is maintained at 12-14 hours per day, and the light intensity is 10-15lux; during the growing period, the chickens are fed with special biological feed 4-5 times a day, and the feeding amount is 15-25g per day; Fattening period: The chicken house temperature is maintained at 18-23℃, the relative humidity is maintained at 55-60%, the light intensity is maintained at 16 hours per day, and the light intensity is 15-20lux; during the rearing period, special biological feed is fed 3-4 times a day, and the feeding amount is 30-40g per day per chicken; S4. Disease Prevention and Control Chicken houses, breeding equipment and utensils should be disinfected regularly 2-3 times a week; at the same time, chickens should be vaccinated according to the local epidemic situation to prevent the occurrence of diseases.

2. The method for breeding chickens with small peptides having liver protection effects according to claim 1, characterized in that: In step S2, the chicken breeds are Sanhuang chicken and Qingyuan Ma chicken.

3. The method for breeding chickens with small peptides having liver protection effects according to claim 1, characterized in that: In step S3, the dedicated biological feed is prepared from basic raw materials, small peptide components, plant extracts, probiotics and vitamins and minerals; Calculated by mass percentage, the basic raw material consists of the following raw materials: 45-55% corn, 20-30% soybean meal, 5-10% wheat bran and the balance calcium hydrogen phosphate.

4. The method for breeding chickens with small peptides having liver protection effects according to claim 3, characterized in that: The addition amount of the small peptide component is 2-3% of the basic raw material; the small peptide component is small peptide protein powder, and the crude protein content of the small peptide protein powder is ≥75%, the moisture content is ≤10%, and the ash content is ≤10%.

5. The method for breeding chickens with small peptides having liver protection effects according to claim 3, characterized in that: The added amount of the plant extract is 1-2% of the basic raw material; the plant extract is prepared by mixing kudzu root extract, liquorice extract and salvia miltiorrhiza extract in a mass ratio of 1:1:

1.

6. The method for breeding chickens with small peptides having liver protection effects according to claim 3, characterized in that: The amount of the probiotics added is 0.5-1% of the basic raw material; the probiotics are prepared by mixing Lactobacillus reuteri and Bifidobacterium adolescentis in a mass ratio of 1:1; the effective viable counts of Lactobacillus reuteri and Bifidobacterium adolescentis are respectively: 5×10 9 cfu / g and 3×10 9 cfu / g.

7. The method for breeding chickens with small peptides having liver protection effects according to claim 3, characterized in that: The vitamins and minerals include vitamin A, vitamin E, vitamin C, selenium and zinc, and their contents in the special biological feed are respectively 5000-800 IU / kg, 20-30 mg / kg, 50-100 mg / kg, 0.1-0.3 mg / kg and 50-80 mg / kg.

8. The method for breeding chickens with small peptides having liver protection effects according to claim 3, characterized in that: The preparation method of the special biological feed is as follows: the basic raw materials are crushed through a 100-mesh sieve, small peptide components, plant extracts, probiotics and vitamins and minerals are added in proportion, the mixture is stirred and evenly mixed, and the mixture is sent to a granulator for granulation to prepare granular feed with a diameter of 2-3 mm, thereby obtaining the special biological feed.

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