Kostov I
Vet Med Nauki. 1979;16(7):19-25.
Uterine motility of 21 cows with retention of the placenta from delivery to 120 D was studied by the radiotelemetric method. Higher uterine motility until 48 D was established in cows with retention of the placenta as compared to cows with a normal third stage of delivery. The mean values of total uterine motility frequency and amplitude of contractions are presented in tables and graphs. Estradiol 17-beta content in cow blood plasma until the 40 D post delivery was higher in cows with retention of the placenta. Bending and folding of uterine horns proved to be the reason for retention of the placenta in 6 cows.
采用无线电遥测法研究了21头分娩后胎盘滞留至120天的奶牛的子宫运动情况。与第三产程正常的奶牛相比，胎盘滞留的奶牛在48天前子宫运动更强。表格和图表中列出了子宫总运动频率和收缩幅度的平均值。分娩后40天内，胎盘滞留的奶牛血浆中17-β雌二醇含量更高。子宫角的弯曲和折叠被证明是6头奶牛胎盘滞留的原因。
