摘要
西安市第二奶牛场以改善综合营养供应为措施 ,即增加维生素、微量元素和蛋白质供应 ,胎衣不下的发病率从 1992 - 1998年的2 6 .2 % (497/ 1895 )降低到 1999- 2 0 0 1年的16 .4 % (15 4/ 94 1) ,成乳牛年均产奶量从 70 0 0kg提高到 75 0 0～ 80 0 0 kg。
The incidence of retention of Fetal membrane in dairy cow was reduced from 26.2%(497/1 895) in 1992~1998 to 16.4%(154/941) in 1999~2001,simultaneously the milk yield per cow a year was increased from 7000 kg to 7500~8000 kg in Xian Second Dairy Farm by multiple nutrition.
出处
《动物医学进展》
CSCD
2003年第3期116-117,共2页
Progress In Veterinary Medicine
