摘要
对正阳三黄鸡开产后70d内的蛋重、蛋纵径、蛋横径进行了测量,研究正阳三黄鸡的蛋重、蛋纵径、蛋横径在开产初期的变化规律,并对产蛋初期蛋重、蛋纵径、蛋横径、蛋形指数进行相关分析,以及连产周期对蛋形指数的影响进行分析。结果表明:蛋重、蛋纵径、蛋横径在产蛋初期随着日龄的增加而增加,蛋形指数却随着日龄的增加而减小,且四者之间均存在着极显著的相关,而连产周期对蛋形指数的影响不显著。
The egg weight, egg vertical diameter and horizontal diameter of eggs laid by Zhengyang Three-yellow broilers after first egg were measured for 70 days to study the egg weight and egg shape in- dex developmental laws, their correlation analysis was also made, as well as the effect of consecutive laying period on egg shape index. The results showed that the egg weight, egg vertical and horizontal diameter in- creased with the growth of age, while the egg shape index decreased with the growth of age, and the four indexes were extremely correlated with each other, but the consecutive laying period had insignificant influ- ence on egg shape index.
出处
《家畜生态学报》
北大核心
2012年第6期55-58,共4页
Journal of Domestic Animal Ecology
基金
河南省2011高校青年骨干教师项目(2011GGJS-163)
关键词
正阳三黄鸡
蛋形指数
蛋重
Zhengyang Three-yellow Broilers
egg shape index
egg weight
