体重对商品蛋鸡产蛋性能影响的观察

在产蛋高峰前后的两群蛋鸡中，同群鸡只体重过轻或过重，在群体均重正负两个标准差外的蛋鸡，其产蛋性能低、抗病力差、死亡率大、饲养成本高，在高密度饲养条件下，几个月内很骓恢复到正常体重和正常的产蛋水平。

Influences of Body Weight of Laying Fowls on Their Laying Performance

s fur the two groups of laying fowls during the time before and after laying peak, thehens whose bodies weigh over ur less than two standard deviation have worse egg performance,poorerhealth, higher death rate, and higher cost for raising them Under the condition of dense breeding,theirbody weight ean hardly return to normal and neither can their laying performance in several months.