急性热应激对北京油鸡生产性能的影响及Vc添加效应的研究  

Effect of acute heat stress and vitamin C supplementationon performance of quality-chicken

作　　者：胡娟[1] 陈继兰[1] 文杰[1] 王丹莉[1] 赵桂萍[1] 郑麦青[1] 蒋瑞瑞[1] 刘琛[1] 刘冉冉[1] 刘伟平[1] 

机构地区：[1]中国农业科学院北京畜牧兽医研究所农业部畜禽遗传资源与利用重点开放实验室,北京100193

出　　处：《安徽农业大学学报》2010年第3期440-444,共5页Journal of Anhui Agricultural University

基　　金：现代农业产业技术体系建设专项资金(nycytx-42);国家科技支撑计划(2006BAD14B06-1)共同资助

摘　　要：本试验旨在研究急性热应激对北京油鸡生长速度、肉品质以及抗病力的影响及日粮中添加Vc对缓解热应激的效果。试验在人工环控气候舱里进行。选取体重相近的56日龄北京油鸡公鸡162只,随机分为3个处理:Ⅰ为饲喂基础日粮的适温对照组;Ⅱ为饲喂基础日粮的高温应激组;Ⅲ为基础日粮中添加200 mg.kg-1的高温应激组。热应激1周后,所有处理统一饲喂基础日粮,环境温度维持在28℃。研究结果显示,急性热应激引起北京油鸡生长速度减慢,日增重降低,并且这种应激效应持续到上市日龄,表现在上市体重显著低于非热应激组(P<0.01);热应激导致鸡群死亡率上升,且抗体合成能力下降;热应激期间日粮中添加200 mg.kg-1有利于增强鸡的免疫力,且对鸡肉的pH值、肌内脂肪含量等品质性状产生一定的影响。We investigated the effects of acute high ambient temperature and dietary supplementation of vitamin C on overall performance in quality chickens.At age of 56 d,162 Beijing-You chickens with similar body weight were randomly divided into 3 groups and assigned to the following treatments： the high ambient temperature,the high ambient temperature with dietary supplementation of vitamin C and the control.The treatment duration lasted 1 week and thereafter all the chickens were subjected to normal environment and same diets till 120 d.Results showed that the growth rate,daily weight gains,the capacity for antibody synthesis and the mortality of experimental birds were all affected negatively by the high ambient temperature.At the end of the experiment,the carry-over effects of early acute heat stress on broiler performance were not completely offset by compensatory metabolism,leading to a significantly lower marketable weight and PSE-like characteristics in skeletal muscle.The vitamin C supplementation was favorable for some variables with regard to growth performance,meat quality and immune responses of heat-stressed chickens.

关 键 词：热应激 北京油鸡 维生素C 生长速度 肉品质 抗病力 

分 类 号：S831.4[农业科学—畜牧学]