- Volume 16 Issue 1
Studies on Incidence of Infertile Holstein Cows and Evalution of Their Blood Values in Jeonnam Area
전남지역(全南地域) 유우(乳牛)에 있어서 번식장해우(繁殖障害牛)의 발생상황(發生狀況) 및 그 혈액치(血液値)의 평가(評價)에 관(關)한 연구(硏究)
- Kang, Byong Kyu (Department of Veterinary Medicine, College of Agriculture, Jeonnam National University) ;
- Na, Jin Soo (Department of Animal Science, College of Agriculture, Jeonnam National University)
- Published : 1976.05.30
A total of 736 Holstein cows were examined for incidence of infertility and 57 infertile cows of them were examined for blood values. The results obtained were as follows: 1. Fifty eight heads (7.9%) of 736 Holstein cows examined were proved to be infertile and the causative disease of 58 infertile cows were diagnosed as silent heat (31.0%), repeat breeder (20.8%), dysfunction of ovary (15.5%), lutein cyst (13.8%), endometritis (8.6%), follicular cyst (5.2%), cervicitis (1.7%), pyometra (1.7%), and free-martin (1.7%). 2. Among the data of blood values of 57 infertile cows, values of total serum protein and serum calcium were remarkably lower (p 0.01) than those of normal cows. Meanwhile the unbalanced Ca/P ratio (1.1) was observed.