中国畜牧兽医2017，Vol.44Issue(5)：1369-1374,6.DOI:10.16431/j.cnki.1671-7236.2017.05.016
能量对妊娠后期母羊健康及其羔羊的影响
Effect of Energy Levels During Late Gestation on the Ewe Health and Growth Performance of Lambs
摘要
Abstract
The late pregnancy is a critical period of fetal growth and development.As approxi-mately 80％ of fetal body weight is obtained during late gestation,so that the amount of energy needed for the ewes at this period is much greater than the other periods.Now ewes with multiple fetuses are mutton sheep breeding cultivation objectives,however,under the grazing or confined feeding conditions where nutrient requirement can't satisfy the nutrient requirement of sheep,es-pecially for pregnant ewes with twins or more lambs.The body glycogen and protein as well as body fat will be mobilized for energy needed for the fetal growth and reproduction,which would lead to bad influence on ewes (metabolic disorders,liver function damage,pregnancy toxemia,embryon-ic development and health)and also on lamb (weak lamb,dead lamb and health).Therefore,investiga-ting the effects of dietary energy levels during late gestation on the ewe's health and growth performance of lambs are essential for the sustainability of livestock production systems.This review summarized the effect of different energy levels on the ewes'health,reproductive performance of the ewes,lactation per-formance,embryo development and the growth of lambs,then expounded the roles of energy in later gestation.When the dietary energy of ewes in late gestation are restricted,the weight,breast develop-ment,lactation capacity,pregnancy rate will all be decreased,and the growth rate and organ develop-ment of embryos and lamb will also be restricted.关键词
能量水平/妊娠后期/母羊/胚胎/羔羊Key words
energy level/late pregnancy/ewe/embryo/lamb分类
农业科技引用本文复制引用
张帆,刁其玉..能量对妊娠后期母羊健康及其羔羊的影响[J].中国畜牧兽医,2017,44(5):1369-1374,6.基金项目
国家肉羊产业技术体系建设专项资金(CARS-39) （CARS-39）
南方地区幼龄草食畜禽饲养技术研究(201303143) （201303143）
