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Scientists find evidence that environmental stress prevents broilers from growing meat

 Last Update: 2021-07-31
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Scientists find evidence that environmental stress prevents broilers from growing meat

Scientists find evidence that environmental stress prevents broilers from growing meat.

Experimental flowchart courtesy of the Chinese Academy of Agricultural Sciences

Recently, " Journal of Animal Science and Biotechnology " ( Journal of Animal Science and Biotechnology ) published online the latest research results of the monogastric animal feed innovation team of the Feed Research Institute of the Chinese Academy of Agricultural Sciences
.

They revealed a new mechanism by which immune stress inhibits the growth of broilers, providing a new perspective for in-depth understanding of immune stress mechanisms

Journal of Animal Science and Biotechnology

Associate researcher Zheng Aijuan, the first author of the thesis, introduced that in intensive farming, broilers are often exposed to environmental stress and many stress challenges.
Animal stress response can lead to immune activation and induce immune stress
.

Long-term immune stress can lead to reduced animal feed intake and growth inhibition, resulting in economic losses in the breeding industry

At present, adding selenium, vitamin E, sodium butyrate and other additives to the diet to alleviate the anti-immune stress effect of broilers is not ideal, because the molecular mechanism of immune stress affecting the growth of broilers is still unclear
.

The team’s previous research found that immune stress changed the expression of energy metabolism and muscle contraction-related proteins in broiler muscles, increased the area of muscle fibers, and reduced the water-holding capacity of muscle cells, resulting in a decrease in meat quality
.

Further research revealed that broiler chickens can up-regulate the expression of proteins related to defense function, wound repair, amino acid catabolism, and hormone secretion in the liver, and respond to the adverse effects of immune stress
.

They discovered for the first time that immune stress can promote the degradation of branched-chain amino acids, leading to decreased secretion of growth hormone (GH) and insulin-like growth factor (IGF-1), thereby reducing muscle anabolism and inhibiting the growth of broilers
.

The results of this study provide an important theoretical basis for alleviating the immune stress problem in broiler production through new nutritional control methods
.

This research was funded by the National Natural Science Foundation of China
.

(Source: China Science News Li Chen)