高寒草甸生态系统中牦牛体重和采食量动态模型的研究

Dynamic models of yak liveweight and its intake in alpine meadow ecosystem

高寒草甸生态系统中牦牛体重和采食量动态模型的研究黄大明（清华大学生物科学与技术系，北京１０００８４）赵松岭（兰州大学，兰州７３００００）Ｄｙｎａｍｉｃｍｏｄｅｌｓｏｆｙａｋｌｉｖｅｗｅｉｇｈｔａｎｄｉｔｓｉｎｔａｋｅｉｎａｌｐｉｎｅｍｅａｄｏｗｅｃｏ...

Yak is one of the important livestock species in alpine animal husbandry of our country. A liveweight dynamic model of grazing yak is established on the basis of its average liveweight data per month in alpine meadow ecosystem. Moreover, quantitative relation' ships between the liveweight and the intake, faeces, urine and methane are determined according to the results of experimental researches.