同期发情是家畜胚胎移植必然的要求。近年来, 国内外广泛应用外源性生殖激素来提高母牛的繁殖性能,取得了理想的效果。我们于2001年4-7月进行了牛的同期发情和胚胎移植试验,现将结果报道如下。 1材料与方法 1.1试验药品。由中国农业科学院畜牧研究所研制提供的兽用前列腺素,批号991106,由上海市计划生育研究所提供的新型高效兽用前列腺素。 Estrus during the same period is necessary for the transfer of livestock embryos. In recent years, extensive use of exogenous reproductive hormones at home and abroad to improve the reproductive performance of cows, and achieved the desired results. We conducted a trial of estrus and embryo transfer in cattle from April to July 2001, and the results are reported below. 1 Materials and Methods 1.1 Test drugs. By the Institute of Animal Husbandry, Chinese Academy of Agricultural Sciences developed veterinary prostaglandin, lot number 991106, by the Shanghai Institute of Family Planning, a new and efficient animal prostaglandin.