孵化期肉鸡胚胎死亡规律的研究

从4栋鸡舍的艾维茵肉用种鸡的入孵种蛋中,选择蛋重及蛋形指数都在最佳范围内(56～68g,0.72～0.81)的2088枚(58盘)种蛋,随机分为3组,同柜孵化。通过照蛋和胚检,观察和统计分析孵化期胚胎死亡规律。结果表明,整个孵化期间,胚胎死亡主要有2个高峰,第1个高峰在孵化前期的4～6日龄,第2高峰期在孵化后期的17～19日龄,这2个胚胎死亡高峰期把剩下的各胚龄分为3个阶段:1～3日龄、7～16日龄、20～21日龄,这3个阶段的胚胎死亡皆差异不显著,本研究结果与一般经验值不完全一致。

Study on the death regular pattern of embryo of chicken during the hatching period

Breeding eggs of Avine chicken for meat were divided into three groups selected from 4 henhouses and hatched in same hatcher for the purpose of studying the death regular pattern of embryo during the hatching period.The egg shape index ranged from 72% to 81% and the egg weight ranged from 56 to 68 grams.The results showed that there are two main fastigiums in death curve during the hatching period,one is in 4-6 day and another is in 17-19 day.The rest embryo ages were divided into three phases by the two pinnacles and the difference of died embryo among three phases is not significant.The results in this paper is not incompletely consistent with commonly experience value.