Animal Bioscience

Asian Australasian Association of Animal Production Societies (아세아태평양축산학회)
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Effects of gamma aminobutyric acid on performance, blood cell of broiler subjected to multi-stress environments

  • Keun-tae, Park (Research and Development Center, Milae Bioresources Co., Ltd.) ;
  • Mihyang, Oh (Research and Development Center, Milae Bioresources Co., Ltd.) ;
  • Younghye, Joo (Research and Development Center, Milae Bioresources Co., Ltd.) ;
  • Jong-Kwon, Han (Research and Development Center, Milae Bioresources Co., Ltd.)
  • Received : 2022.01.19
  • Accepted : 2022.07.09
  • Published : 2023.02.01
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Abstract

Objective: Stress factors such as high temperatures, overcrowding, and diurnal temperature range exert profound negative effects on weight gain and productivity of broiler chickens. The potential of gamma aminobutyric acid (GABA) as an excitatory neurotransmitter was evaluated under various stress conditions in this study. Methods: The experiment was conducted under four different environmental conditions: normal, high temperature, overcrowded, and in an overcrowded-diurnal temperature range. The experimental groups were divided into (-) control group without stress, (+) control group with stress, and G50 group (GABA 50 mg/kg) with stress. Weight gain, feed intake, and feed conversion ratio were measured, and stress reduction was evaluated through hematologic analysis. Results: The effects of GABA on broilers in four experimental treatments were evaluated. GABA treated responded to environmental stress and improved productivity in all the experimental treatments. The magnitude of stress observed was highest at high temperature, followed by the overcrowded environment, and was least for the overcrowded-diurnal temperature range. Conclusion: Various stress factors in livestock rearing environment can reduce productivity and increase disease incidence and mortality rate. To address these challenges, GABA, an inhibitory neurotransmitter, was shown to reduce stress caused due to various environmental conditions and improve productivity.

Keywords

Acknowledgement

The authors received no financial support for this article.

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