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

作　　者：ZHOU ying ZHANG Min-hong FENG Jing-hai DIAO Hua-jie 

机构地区：[1]State Key Laboratory of Animal Nutrition,Institute of Animal Science,Chinese Academy of Agricultural Sciences

出　　处：《Journal of Integrative Agriculture》2019年第6期1321-1328,共8页农业科学学报（英文版）

基　　金：funded by the Key National Research and Development Program of China (2016YFD0500509);the Agricultural Science and Technology Innovation Program, Chinese Academy of Agricultural Sciences (ASTIP-IAS08)

摘　　要：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℃for 15 days(temperature increased by 3℃every 3 days from 20 to 32℃within 15 days:20–23–26–29–32℃).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.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.

关 键 词：BROILER growth performance MITOCHONDRIAL ATP poduction relative humidity chronic TEMPERATURE 

分 类 号：S[农业科学]