Broiler chicken low-protein feed suitable for heat stress and application of broiler chicken low-protein feed

A protein feed and heat stress technology, applied in the field of broiler low-protein feed, can solve the problems of poor application effect of low-protein diet in summer, and achieve the effects of improving feed efficiency, increasing nitrogen utilization rate, and reducing serum uric acid level.

Active Publication Date: 2021-02-05
FEED RESEARCH INSTITUTE CHINESE ACADEMY OF AGRICULTURAL SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although people tried to solve it by introducing glycine (Awad et al., 2015, 2018) and protease (Fang et al., 2018a, 2018b) in recent years, they failed to overcome the problem of poor application effect of low protein diet in summer

Method used

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  • Broiler chicken low-protein feed suitable for heat stress and application of broiler chicken low-protein feed
  • Broiler chicken low-protein feed suitable for heat stress and application of broiler chicken low-protein feed
  • Broiler chicken low-protein feed suitable for heat stress and application of broiler chicken low-protein feed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Example 1 - Effect of Cystine on Sulfur-Containing Amino Acids in Low Protein Diets Under Heat Stress Conditions

[0059] In the production of broilers, cystine is not added to the feed, and the need for cystine is not considered separately. Only methionine is added, and the need for cystine is converted from methionine. This experiment shows that supplementing cystine, which is neglected by the industry during heat stress, and adjusting the ratio of sulfur-containing amino acids have a good effect on regulating the growth of broilers, and can partially alleviate the adverse effects of low-protein diets on growth.

[0060] 1. Experimental design and diet formula

[0061] A total of 432 1-day-old healthy Kebao-500 broiler male chicks were selected and randomly divided into 6 corn-soybean meal diet treatments, each treatment had 6 replicates, and each replicate had 12 chickens. The positive control (PC) group is the normal protein group (the prophase and late protein lev...

Embodiment 2

[0103] Example 2 - Effect of Cystine Supplementation on Growth and Serum Metabolome of Broiler Chickens under Heat Stress Conditions

[0104] Glycine is a non-essential amino acid that is easily deficient in low-protein diets for broilers, but low-protein diets supplemented with glycine still cannot achieve normal growth performance under heat stress conditions. If cystine and glycine have a synergistic effect, it will improve the application effect of low protein diet. This experiment shows that glycine does have a synergistic effect with cystine, adding one alone can only partially alleviate the low growth, and the combination of the two can make the growth of broilers eating low-protein diets fully reach normal protein levels.

[0105] 1. Experimental design and diet formula

[0106] A total of 432 1-day-old healthy Kebao-500 broiler male chicks were selected and randomly divided into 6 corn-soybean meal diet treatments, each treatment had 6 replicates, and each replicate ...

Embodiment 3

[0154] Example 3——Under heat stress conditions, a study on the appropriate dosage of glycine in a low-protein diet supplemented with cystine

[0155] On the basis of the known good interaction effect between cystine and glycine, the appropriate dosage of glycine was further optimized, and a better combination of cystine and glycine was obtained, which was applied to low-protein diets of broilers to improve the breeding and feeding effect.

[0156] 1. Experimental design and diet formula

[0157] A total of 432 1-day-old healthy Kebao-500 broiler male chicks were selected and randomly divided into 6 corn-soybean meal diet treatments, each treatment had 6 replicates, and each replicate had 12 chickens. The positive control (PC) group is the normal protein group (the prophase and late protein levels are 22% and 20% respectively); the negative control (NC) group is the low protein (LP) group with a decrease of 4.5 percentage points and the addition of 0.10% cystine group (17.5% a...

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Abstract

The invention discloses a broiler chicken low-protein feed suitable for heat stress and application of the broiler chicken low-protein feed, and belongs to the field of animal husbandry and feed. Thecrude protein content in the feed can be reduced by 4-4.5% compared with the feeding standard, the feed is prepared on the basis of an ideal amino acid mode, and cystine, glycine and other crystallineamino acids are added. The broiler chicken low-protein feed can overcome the defect of poor broiler chicken feeding effect of low-protein daily ration in summer heat stress ubiquitous in the industry. Under a heat stress condition, after broiler chickens are fed with the feed, the weight gain can be remarkably improved, the feed efficiency can be improved, the pectoral muscle rate can be increased, and the serum uric acid level can be reduced. The feed not only can save protein feed and improve the utilization rate of nitrogen, but also can ensure that the broiler chickens can obtain the growth performance and carcass composition which are equal to or superior to those of a normal feed, and has remarkable ecological benefits and good application prospects.

Description

technical field [0001] The invention belongs to the technical field of poultry feed, and in particular relates to a broiler low-protein feed suitable for heat stress and its application. Background technique [0002] my country lacks protein feed resources, and protein raw materials have long relied on soybean meal produced from imported soybeans. In breeding production, in order to pursue production performance and feed efficiency, high-protein diets are often used. High-protein diets pollute the environment due to insufficient protein digestion and absorption, resulting in increased nitrogen emissions. In order to reduce the environmental pollution caused by livestock and poultry breeding and alleviate the shortage of protein resources, the state issued a new group standard "Compound Feed for Laying Hens and Broilers" in 2018 to encourage aquaculture producers to use low-protein diets. Due to the fast growth rate and high protein content of feed for broilers, broiler fee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K20/142A23K20/22A23K20/28A23K50/75
CPCA23K20/142A23K20/22A23K20/28A23K50/75Y02P60/87
Inventor 张海军冯倩倩武书庚王晶齐广海马友彪林静邱凯
Owner FEED RESEARCH INSTITUTE CHINESE ACADEMY OF AGRICULTURAL SCIENCES
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