Journal of Integrative Agriculture ›› 2019, Vol. 18 ›› Issue (6): 1321-1328.DOI: 10.1016/S2095-3119(19)62584-0

• 论文 • 上一篇    下一篇

  

  • 收稿日期:2018-04-27 出版日期:2019-06-01 发布日期:2019-05-29

Effect of relative humidity at chronic temperature on growth performance, glucose consumption, and mitochondrial ATP production of broilers

ZHOU ying, ZHANG Min-hong, FENG Jing-hai, DIAO Hua-jie   

  1. State Key Laboratory of Animal Nutrition, institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R.China
  • Received:2018-04-27 Online:2019-06-01 Published:2019-05-29
  • Contact: Correspondence ZHANG Min-hong, E-mail: zmh66@126.com
  • About author:Received 27 April, 2018 Accepted 18 December, 2018 ZHOU Ying, E-mail: 1361841518@qq.com;
  • Supported by:
    The authors gratefully thank our team for helping to complete the experiments. The present study was funded by the Key National Research and Development Program of China (2016YFD0500509) and the Agricultural Science and Technology Innovation Program, Chinese Academy of Agricultural Sciences (ASTIP-IAS08).

Abstract:

An experiment was conducted to investigate the effect of relative humidity (RH) at chronic temperature on growth performance, glucose consumption, and mitochondrial adenosine triphosphate (ATP) production of broilers.  A total of 180 28-day-old Arbor Acres broilers (half males and half females) were randomly allocated to three treatments, each containing six replicates of 10 birds per treatment, using a completely randomized design.  Birds were reared at 35, 60 or 85% RH at 32°C for 15 days (temperature increased by 3°C every 3 days from 20 to 32°C within 15 days: 20–23–26–29–32°C).  RH affected (P<0.05) average daily feed intake (ADFI), average daily gain (ADG), average daily water consumption (ADWC), blood glucose concentrations, muscle glycogen levels, avian uncoupling protein (av UCP) mRNA expression, and cytochrome c oxidase (CCO) activity in liver of broilers at 42 days of age.  The 85% RH decreased (P<0.05) ADFI, ADG and ADWC; 35% RH decreased (P<0.02) ADG.  Both 85 and 35% RH increased (P<0.01) blood glucose and decreased (P<0.05) muscle glycogen.  Both 85 and 35% RH increased (P<0.05) av UCP mRNA expression.  35% RH decreased (P<0.05) CCO activity.  In conclusion, both high and low RH inceased glucose consumption and reduced mitochondrial ATP poduction, leading to a decline in growth rate.

Key words: broiler ,  growth performance ,  mitochondrial ATP poduction ,  relative humidity ,  chronic temperature