补饲非蛋白氮补充料对放牧牛群生产性能的影响

补饲非蛋白氮补充料对放牧牛群生产性能的影响

关超;杨效民;张喜忠;李军;张元庆

Study on the Grazing Cattle Feeding with Non-protein Nitrogen Supplementation

GUAN Chao;YANG Xiao-min;ZHANG Xi-zhong;LI Jun;ZHANG Yuan-qing

. 2010, (11): 203 -204 .