农牧交错区不同牧草时期放牧奶牛采食量与食性的研究  

Study on the Pasture Intake and its Composition for Grazing Dairy Cows in Different Period in Agri-pastoral Transitional Zone

作　　者：樊金富[1] 金海[2] 

机构地区：[1]内蒙古农业大学动物科学与医学学院,呼和浩特010018 [2]内蒙古农牧业科学院,呼和浩特010030

出　　处：《中国草食动物》2009年第3期15-19,共5页China Herbivores

基　　金：国家奶业支撑基金

摘　　要：用饱和烷烃法对不同牧草时期放牧奶牛的采食量进行了测定。结果表明:放牧奶牛在牧草幼嫩期、旺盛期、枯黄期3期的采食量结果分别为:绝对采食量(kg/d)为11.54±0.66、13.83±0.55、5.75±0.32,采食量在牧草旺盛期时达到最高。采食组成幼嫩期以苔草为主、旺盛期以隐子草为主、枯黄期以赖草为主,这与草场植物的生长和奶牛的喜好有关。The measurement of feed intake of grazing dairy cows was conducted by using alkane in different seasons.The results showed as follows:the daily feed intake of the dairy cows measured by saturated-alkane in young pasture,growing pasture and perishing pasture were:11.54±0.66,13.83±0.55,5.75±0.32(kg/d)respectively.The pasture intake was high in growing pasture.The pasture composition is(Carex siderosticta) in young pasture,in growing pasture is(Cleistogenes songorica Ohwi)and in perishing pasture is(Leymus secalinus Georgi) Tzvel.This is related to pasture growing and cows like.

关 键 词：农牧交错区 放牧奶牛 饱和烷烃 采食量 采食组成 

分 类 号：S823.4[农业科学—畜牧学]