一种基于奶牛反刍时间的发情鉴定新技术
冯涛, 郭勇, 白佳桦, 许晓玲, 刘彦
A New Method of Heat Detection Based on Rumination Time in Dairy Cattle
FENG Tao, GUO Yong, BAI Jia-hua, XU Xiao-ling, LIU Yan
China Animal Husbandry & Veterinary Medicine . 2013, (7): 198 -200 .