产蛋后期蛋鸡生理特点与营养调控

蛋鸡生产周期可分为产蛋前期、产蛋高峰和产蛋后期三个阶段,产蛋后期约占整个产蛋期的一半.蛋鸡进入产蛋后期会伴随一系列的生理健康问题,如脂质代谢失调、氧化性损伤、免疫性能降低和钙磷吸收代谢紊乱等.产蛋后期蛋鸡生理状况的改变导致生产性能降低、鸡蛋品质变差.在当前饲料"全面禁抗"的大背景下,如何利用营养调控的手段来改善产蛋后期...

Physiological Characteristics and Nutritional Regulation of Aged Laying Hens

The production cycle of laying hens can be divided into three stages:early laying stage,peak laying stage and late laying stage,and the latter stage accounts for about half of the whole laying period.There will be a series of physiological health problems in the late laying period of layers,such as lipid metabolism disorder,oxidative damage,immune function reduction and calcium and phosphorus metabolism disorder.These seriously affect the performance and egg quality of layers.Under the background of"complete prohibition of antibiotics"in feed,it is of great significance to improve the health of chickens in late laying stage by means of nutrition regulation.In this paper,the physiological characteristics of laying hens in the late laying stage and the corresponding nutritional regulation were summarized in order to improve the health status and economic benefits of the laying hens in the late laying stage.