de Kruif A, Brand A
Tijdschr Diergeneeskd. 1976 May 1;101(9):491-3.
One hundred and fifty lactating, suboestrus cows with palpable corpora lutea from twenty herds were treated by intramuscular injection of prostaglandins. The expected date of oestrus was predicted in 150 suboestrous controls of the same herds on the basis of ovarian findings. The average interval between treatment and insemination was 8.8 days in the prostaglandin-treated and 17.6 days in the control group. The interval between treatment and insemination was shorter than eight days in 74 per cent of the prostaglandin-treated cows. Pregnancy rates in the treatment and control groups were 56 per cent and 58 per cent respectively.
从20个牛群中选取了150头处于泌乳期、发情间期且可触及黄体的母牛，通过肌肉注射前列腺素进行治疗。根据卵巢检查结果，对同一牛群中150头处于发情间期的对照母牛预测了预期发情日期。前列腺素治疗组从治疗到输精的平均间隔为8.8天，对照组为17.6天。在前列腺素治疗的母牛中，74%从治疗到输精的间隔短于8天。治疗组和对照组的妊娠率分别为56%和58%。
