中国草地学报2025，Vol.47Issue(2)：1-7,7.DOI:10.16742/j.zgcdxb.20240116
羊草草地放牧饲养效益研究
Study on Feeding Benefit of Grazing in Leymus chinensis Steppe
摘要
Abstract
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Key words
Grassland/Grazing/Feeding/Supplement/Forage efficiency/Feeding benefit分类
农业科技引用本文复制引用
周道玮,孙海霞,白永松,欧阳滔滔,李强,胡娟..羊草草地放牧饲养效益研究[J].中国草地学报,2025,47(2):1-7,7.基金项目
中国科学院战略性先导科技专项A类(XDA26040202,XDA28110203) （XDA26040202,XDA28110203）
