China Animal Husbandry and Veterinary Medicine ›› 2024, Vol. 51 ›› Issue (2): 581-590.doi: 10.16431/j.cnki.1671-7236.2024.02.015

• Nutrition and Feed • Previous Articles     Next Articles

Research Advances on the Effects of Heat Stress on Production Performance, Serum Biochemistry and Gut Microbes in Chickens

SUN Pengfei1, WANG Xiaohan1, HU Yun1, WU Huiguang2, ZHAO Jingwen1, LUO Xugang1   

  1. 1. College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China;
    2. College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
  • Received:2023-08-16 Online:2024-02-05 Published:2024-01-29
  • Contact: 江苏省"双创团队"(JSSCTD202147)
  • Supported by:
    The project was supported by the National Key Research and Development Program of China (2019YFC1905301);National Natural Science Foundation of China (22078115,21776108,21690083,22008078).

Abstract: Heat stress is one of the major environmental stress challenges facing chicken production worldwide, and is the sum of a number of non-specific stress responses that animals exhibit when exposed to the external environment.Heat stress can lead to reduced feed intake, reduced growth performance, altered blood biochemical parameters and disturbances in the gut microflora, which can seriously affect chicken productivity.Heat stress can also reduce the defense mechanisms and immune function of chickens, increase the expression of inflammatory factors, cause an increase in body antioxidant indicators, and significantly affect the composition and diversity of gut microbiota, with Escherichia coli and Bacillus methanogens as important predictors that play an important role in foresight.Physiological adjustments in chickens under heat stress conditions include increased heart rate, rapid respiration and increased oxidative metabolism in the body.In the actual production process, the harm caused by heat stress can be effectively alleviated by strengthening breeding management, improving the breeding environment, and adding anti-stress substances, such as trace element zinc and various vitamins.The authors synthesize the effects of heat stress on the production performance, serum biochemistry, antioxidants and the structure of gut microbiota in chicken, so as to provide a theoretical basis for preventing heat stress during chicken breeding.

Key words: heat stress; chicken; production performance; serum indicators; gut microbes

CLC Number: