青藏高原不同家畜生产系统的补贴能转化效率  

Cultural Energy Utilization of Different Livestock Production Systems in Qinghai-Tibetan Plateau

作　　者：薛白[1] 赵新全[1] 张耀生[1] 

机构地区：[1]中国科学院西北高原生物研究所

出　　处：《家畜生态学报》2005年第2期16-20,共5页Journal of Domestic Animal Ecology

基　　金：中国科学院知识创新项目(kzcx1-09-01);西北高原生物研究所知识创新重点项目(cjc020144)的资助。

摘　　要：　本研究比较了青藏高原传统天然草场放牧系统、短期放牧系统以及放牧加舍饲系统三种生产系统的补贴能转化效率。传统放牧系统牦牛和高山细毛羊每消耗1MJ的补贴能将分别生产2.32MJ和0.81MJ的体能量,而放牧加舍饲系统的相应数值则分别为0.177MJ和0.175MJ。三种生产系统中,放牧加舍饲生产系统补贴能转化效率最低,传统放牧系统最高,表明集约化越高的生产系统,其补贴能转化效率越低。Cultural energy utilization of three livestock production systems in Qinghai-Tibetan Plateau was compared, which were traditional grazing system, short-time grazing system and grazing plus feedlot system. Cultural energy utilization was highest in traditional grazing system, and lowest in grazing plus feedlot system. In traditional grazing system, for 1 MJ cultural energy input, there would be 2.32 MJ and 0.81 MJ body energy output for yak and Gansu Alpine Sheep respectively. The corresponding data in grazing plus feedlot system were 0.177 MJ and 0.175 MJ body energy output for yak and Gansu Alpine Sheep respectively. These results showed that cultural energy utilization adversely correlated to intensivism.

关 键 词：生产系统 转化效率 青藏高原 补贴 放牧系统 家畜 高山细毛羊 天然草场 传统 舍饲 集约化 牦牛 

分 类 号：S812[农业科学—草业科学] TD82[农业科学—畜牧学]