摘要
将产蛋率在７０ ％ ～８０ ％ 间的父母代伊莎种母鸡１２８０ 只及１２８ 只公鸡，分为１６ 个处理组，采用正交设计，试验期５０ 天，观测不同添加剂量的维生素 Ｃ 和酵母铬对夏季高温期蛋鸡生产性能的影响。结果表明；在５ 日平均气温超过３０ ℃的状况下，饲料中添加万分之四维生素 Ｃ 和十万分之一酵母铬，可有效克服高温对蛋鸡生产性能的不良影响。
Some chicken farm in Chongqing,the 1280 of parent stocks ISA laying hens,laying rate among 70%～80% in the middle of egg term,and 128 of cocks were selected and divided into 16 treatment groups(each group had 4 repetitional groups)using orthogonal design〔selected orthogonal table of L 16 (4 5)〕,eaxh group were feeded same basal diet for observing the effect of the difference additive dosage of vitc and yeast Cr to the productivities of layers during 50 testing days in high temperature term of summar The results show the 400ppm vitc and 10ppm yeast Cr added into basal diet can effectual overcome the harmful effects of the high temperature to productivity of layer in situation of average temperature of sdays over 30℃
出处
《四川畜牧兽医》
1999年第9期20-20,22,共2页
Sichuan Animal & Veterinary Sciences
