松嫩羊草草地不同产羔期及植被季相动态对羔羊生长发育的影响  

Study on the different Lambing Date and Vegetation dynamic Impact on the Lamb Growth in Songnen Plain

作　　者：覃盟琳[1] 林佳乔[1] 陶岩[1] 周道玮[1] 

机构地区：[1]东北师范大学草地研究所,长春130024

出　　处：《中国草食动物》2005年第3期3-7,共5页China Herbivores

基　　金：国家重点基础研究发展规划资助项目(G2000018602)

摘　　要：松嫩羊草草地有非常明显的季节性,以松嫩羊草草地为主要放牧场的东北细毛羊因不同的产羔期而有不同的生长发育过程。12、3和6月份出生羔羊的出生体重、断奶体重、绝对增重速率、相对增重速率及饲养周期存在差异。3月份羔具有最短的饲养周期,最高的增重速率。3月份产羔不仅减轻草的载畜量,特别是草地脆弱期———返青期的载畜量,而且此期羔羊的生长发育所需营养与草地牧草营养水平保持一致,从而使家畜生产和草地管理得以健康发展。Different lambing date lambs were grazing on the Songnen plain,which had varies of live weight development,such as Birth weight,Weaning weight,Absolute growth,Relative growth and Feeding period. Lambing in Mar had most growth rate and a least feeding period,which not only reduced the stocking rate of the grassland,especially in the grassland renew period,but also it's nutrient demand of the live weight development harmonious to the nutrient dynamic of the forage provide by the grassland. Result showed that lambing in Mar both benefited to the grassland and lamb growth.

关 键 词：产羔期 绝对增重速率 饲养周期 相对增重速率 草地管理 

分 类 号：S812.05[农业科学—草业科学]