高水平饲养对奶牛分娩持续时间和难产发生率的影响。

The influence of high level feeding on the duration of parturition and the incidence of dystocia in dairy cows.

作者信息

Maree C

出版信息

J S Afr Vet Assoc. 1986 Sep;57(3):151-3.

Abstract

Dairy cows on high and controlled feed levels were observed to determine the duration of the parturition process and the incidence of dystocia. Maternal and foetal mass ratio at calving were recorded. The duration of parturition in cows on high level feeding was significantly prolonged to 5.2 +/- 2.8 hours as compared to 1.34 +/- 0.89 hours in cows on controlled feeding. The incidence of dystocia was significantly higher in over-fed cows. While maternal mass on high level feeding increased by 27.3%, foetal mass increased by only 5.4%.

摘要

观察处于高饲养水平且饲料量受控制的奶牛，以确定分娩过程的持续时间和难产发生率。记录产犊时母体与胎儿的质量比。与饲料量受控制的奶牛相比，处于高饲养水平的奶牛分娩持续时间显著延长至5.2±2.8小时，而饲料量受控制的奶牛为1.34±0.89小时。过度喂养的奶牛难产发生率显著更高。高饲养水平下母体质量增加了27.3%，而胎儿质量仅增加了5.4%。