摘要
230日龄罗曼蛋鸡7400羽,随机分为2组,一组为有天窗的实验组,一组为对照组,试验天窗对产蛋率和破蛋率的影响。结果表明:有天窗的试验组的产蛋率极显著高于无天窗的对照组,试验组的破蛋率极显著低于对照组(p<0.01)。
The experiment was conducted to evaluate the effects of ceiling ventilator on percent egg production and percent shell thickness. Seven thousand and four hundred Roman laying hens （230 day-old ） were divided into 2 groups. One group （experiment group） was kept in henhouse with ceiling ventilator, while the other group （control group） was kept in henhouse without ceiling ventilator. As a result, percent egg production of the experiment group was higher significantly than the control and percent eggshell thickness was lower significantly of the experiment group than the control （p〈0.01）.
出处
《畜禽业》
2006年第5期38-39,共2页
Livestock and Poultry Industry
关键词
天窗
蛋鸡
产蛋率
破蛋率
ceihng ventilator
laying hens
percent egg production
percent shell thickness
