Studies on Incidence of Retained Fetal Membrane in Dairy Cows

유우에서 태반정체 발생률에 관한 조사연구

The 587 Holstein cows which calved from January 1983 to December 1984 at an integrated dairy farm in Chung-Nam Province were investigated on incidence of retained fetal membrane. The results obtained were as follows ; 1. The incidence of retained fetal membrane was 15.2% (89 heads) among 587 heads which investigated. 2. The cows which calved in summer showed significantly higher incidence of retained fetal membrane than those which calved in winter(P<0.01), spring and autumn (P<0.05). 3. There was no difference in incidence of retained fetal membrane by calving number.