动物营养学报Issue(2)：402-409,8.DOI:10.3969/j.issn.1006-267x.2016.02.013
急性偏热处理对肉仔鸡体热调节功能的影响
Effects of Acute Moderate Temperatures on Function of Body Thermoregulation of Broiler Chickens
摘要
Abstract
This experiment was conducted to investigate the effects of three different acute ambient tempera-tures ( 21, 26 and 31 ℃) on function of body thermoregulation of broiler chickens.Twenty-four 40-day-old male Arbor Acres ( AA) broiler chickens were assigned to three environment controlled chambers, each cham-ber contained eight birds (as eight replicates).The pre-test period lasted for two days and birds were kept at 21 ℃ and 60%relative humidity.When broiler chickens were 42 days of age, the temperatures of each envi-ronment chamber were regulated to 21 ( control) , 26 and 31 ℃ finishing within an hour, respectively, while maintaining the relative humidity at 60% and keeping for two hour, then collecting samples.The results showed as follows: compared with 21 ℃treatment, 1) 26 ℃ treatment significantly increased core body and skin temperatures of broiler chickens ( P<0.01) .There were no significant effects on respiratory rate and blood gas indices ( P>0.05) .The concentrations of sodion ( Na+) in blood had a decreasing tend ( 0.05<P<0.10) . And the concentration of 3,5,3’-triiodothyronine (T3) in blood was decreased significantly (P<0.05).2) 31 ℃ treatment significantly increased core body and skin temperatures, respiratory rate, pH and potassium ion ( K+) concentration in blood ( P<0.01) .The carbon dioxin pressure ( PCO2 ) and the concentration of carbon-ate ion (CO2-3 ) were significantly decreased (P<0.01), while the concentration of T3 was significantly de-creased (P<0.05).Oxygen pressure (PO2) and cortisol (CORT) concentration had increasing tends (0.05<P<0.10), while a decline tend was observed at the concentration of Na+(0.05<P<0.10).In conclusion, com-pared with 21 ℃treatment, acute moderate temperature treatments ( 26 and 31℃) can affect function of body thermoregulation of broiler chickens in different degrees.关键词
急性偏热环境/肉仔鸡/体热调节Key words
acute moderate temperature/broiler chickens/body thermoregulation分类
农业科技引用本文复制引用
张少帅,甄龙,张敏红,冯京海,彭骞骞,常玉,周莹,李香,李萌..急性偏热处理对肉仔鸡体热调节功能的影响[J].动物营养学报,2016,(2):402-409,8.基金项目
国家“十二五”科技支撑课题（2012BAD39B02）；中国农业科学院科技创新工程 （）
