动物营养学报2017，Vol.29Issue(3)：776-785,10.DOI:10.3969/j.issn.1006-267x.2017.03.007
急性偏热环境温度对肉鸡行为、生理、血清生化指标和禽类解偶联蛋白mRNA表达量的影响
Effects of Acute Moderate Ambient Temperatures on Behavior, Physiology, Serum Biochemical Indices and Avian Uncoupling Protein mRNA Expression of Broilers
摘要
Abstract
This study was conducted to investigate the effects of acute moderate ambient temperatures on behavior,physiology,serum biochemical indices and avian uncoupling protein (avUCP) mRNA expression of broilers.One hundred 26-day-old Arbor Acres (AA) broilers were allotted into five environment chambers (20,23,26,29 and 32 ℃ groups),and each chamber contained one cage with twenty birds (with ten males and ten females).The pre-test period lasted for 7 days and broilers were kept at 21 ℃ and 60％ relative humidity.When broilers were 34-day-old,the temperature of five environment chambers were regulated to 20,23,26,29 and 32 ℃ within one hour,respectively,while maintaining the relative humidity at 60％ and both kept 2 hour.The results showed as follows:1) compared with the 20 ℃ group,the feeding frequency of broilers in 29 and 32 ℃ groups was significantly reduced (P＜0.05),the drinking frequency of broilers in 23,26,29 and 32 ℃ groups had no significant difference (P＞0.05),and the standing frequency of broilers in 23,26,29 and 32 ℃ groups was significantly reduced (P＜0.05).2) Compared with the 20 ℃ group,the sitting resting frequency of broilers in 26,29 and 32 ℃ groups was significantly reduced (P＜0.05),the stretching resting frequency of broilers in 23,26 and 32 ℃ groups was significantly reduced (P＜0.05),and the prostrating resting frequency of broilers in 29 and 32 ℃ groups was significantly increased (P＜0.05).3) Compared with the 20 ℃ group,the core body temperature and respiratory frequency of broilers in 26,29 and 32 ℃ were significantly increased (P＜0.05),the skin temperature of comb,earlobe,leg and flipper of broilers in 23,26,29 and 32 ℃ groups was significantly increased (P＜0.05),and the eyelid skin temperature of broilers in 26,29 and 32 ℃ groups was significantly increased (P＜0.05).4) Compared with the 20 ℃ group,the serum glucose (GLU) content of broilers in 29 and 32 ℃ groups was significantly decreased (P＜0.05),and the serum triglyceride (TG) content of broilers in 26,29 and 32 ℃ groups had significantly decreased (P＜0.05),the serum total cholesterol (TC) content of broilers in 23,26,29 and 32 ℃ groups was no significant difference (P＞0.05).5) Compared with the 20 ℃ group,the avUCP mRNA expression in pectoral of broilers in 23,26,29 and 32 ℃ groups was significantly decreased (P＜0.05),while the avUCP mRNA expression in liver of broilers in 32 ℃ group was significantly increased (P＜0.05).In conclusion,acute moderate temperatures 2 h,broilers start chemical regulation at 23 ℃,and increase core body temperature at 26 ℃.关键词
急性偏热环境温度/肉鸡/行为/禽类解偶联蛋白Key words
acute moderate ambient temperature/broilers/behavior/avian uncoupling protein分类
农业科技引用本文复制引用
李香,石玉祥,冯京海,李萌,周莹,张敏红..急性偏热环境温度对肉鸡行为、生理、血清生化指标和禽类解偶联蛋白mRNA表达量的影响[J].动物营养学报,2017,29(3):776-785,10.基金项目
同家科技支撑计划课题“畜禽健康养殖环境控制关键技术研究与集成”(2012BAD39B02) （2012BAD39B02）
国家重点“十三五”研发计划课题“肉禽舒适环境的适宜参数及限值研究”(2016YFD0500509) （2016YFD0500509）
巾国农业科学院科技创新团队项目(ASTIP-IAS07) （ASTIP-IAS07）
