摘要
在自控式人工气候室内研究表明,30℃左右时,鸡的产蛋率、蛋重和体重均无显著降低,而耗料量和料蛋比却显著下降;34～35℃时则各指标均显著或极显著下降。环境温度越高,持续时间越长,下降幅度越大,恢复也越慢,这也与品种有关。不同的升温方式对产蛋率和蛋重的影响不一,短期快速升温对产蛋率影响较大,长期缓慢升温对蛋重影响较大。
The article reported effects of high temperature on egg performance,feed consumption,feed to egg ratio and body weight.High temperature at 30℃ or so resulted in significant reduction of feed con- sumptioh and feed to egg ratio but egg performance and body weight.High temperature at 34～35℃ re- sulted in significant reduction of all the indexes.The higher the temperature and the longer the mainte- nance time,the more the reduction and the slower the restoration,which effect was related to variety.The different ways of raising temperature resulted in different effect on laying rate and egg weight.Raising temperature rapidly in short time had a greater effect on laying rate and raising temperature slowly in long time had a greater effect on egg weight.
基金
国家自然科学基金"高温对鸡产蛋性能影响机制的研究"的一部分
关键词
高温
产蛋性能
耗料量
体重
卵用鸡
laying hen
high temperature
egg performaned
feed consumption
body weight
