羊草草地放牧饲养效益研究  

Study on Feeding Benefit of Grazing in Leymus chinensis Steppe

作　　者：周道玮[1] 孙海霞[1] 白永松 欧阳滔滔 李强[1] 胡娟 ZHOU Daowei;SUN Haixia;BAI Yongsong;OUYANG Taotao;LI Qiang;HU Juan(Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences/Jilin Provincial Key Laboratory of Grassland Animal Husbandry,Changchun 130102,China)

机构地区：[1]中国科学院东北地理与农业生态研究所/吉林省草地畜牧重点实验室,吉林长春130102

出　　处：《中国草地学报》2025年第2期1-7,共7页Chinese Journal of Grassland

基　　金：中国科学院战略性先导科技专项A类(XDA26040202,XDA28110203)。

摘　　要：为提高饲草效率、节约饲草资源、保护草地生态,本文比较研究了羊草草地能量季节变化情景下,高生长率和低生长率放牧饲养的饲草效率及饲养效益。结果表明,高生长率(0.2 kg/d)放牧饲养累积消耗的代谢能比低生长率(0.1 kg/d)放牧饲养减少38.1%,累积消耗的粗蛋白质、钙和总磷分别减少29.5%、38.8%和38.1%;高生长率放牧饲养的饲草效率达23.2%,比低生长率提高90.2%。利用能量饲料玉米补饲,可以实现高生长率,高生长率放牧饲养比低生长率放牧饲养节约饲料成本35%。高生长率放牧饲养减少放牧日数,节约代谢能以及蛋白质和矿质营养需要,饲草效率提高,饲料成本降低,最终饲养效益提高,这对发展高效草地畜牧业及保护草地生态具有重大意义。In order to improve forage efficiency,save forage resources and protect grassland ecology,this experiment compared and studied the forage efficiency and feeding benefits of grazing feeding with high and low growth rate under the energy seasonal variation scenarios of Leymus chinensis steppe.The results showed that the cumulative metabolic consumption of high growth rate(0.2 kg/d)was 38.1%lower than that of low growth rate(0.1 kg/d),and the cumulative consumption of crude protein,calcium and total phosphorus was reduced by 29.5%,38.8%and 38.1%,respectively.The forage efficiency of grazing with high growth rate was 23.2%,which was 90.2%higher than that of low growth rate.High growth rate can be achieved by using energy feed corn supplement.Grazing with high growth rate saved 35%of feed costs compared with grazing with low growth rate.High growth rate grazing reduced the number of grazing days,saved metabolic energy and protein and mineral nutrients,improved forage efficiency,reduced feed costs,and ultimately improved feeding efficiency,which had great significance for the development of high-efficiency grassland animal husbandry and the protection of grassland ecology.

关 键 词：草地 绵羊 放牧饲养 补饲 饲草效率 饲养效益 

分 类 号：S812.8[农业科学—草业科学]