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
China Animal Husbandry & Veterinary Medicine
.
2010, (11): 203
-204
.
