季节对荷斯坦育成牛超排效果的影响分析  

The Influence of Seasons on the Superovulation of Holstein Heifers

作　　者：陈龙[1,2] 刘潇[1] 毕江华[1] 余文莉[1] 李树静[1,2] 

机构地区：[1]北京安伯胚胎生物技术中心,北京100107 [2]石家庄天泉良种奶牛有限公司,河北石家庄050051

出　　处：《中国畜牧兽医》2011年第9期134-137,共4页China Animal Husbandry & Veterinary Medicine

基　　金：国家科技部农业科技成果转化资金项目(2009GB2A200029);河北省重大技术创新项目(11220403Z)

摘　　要：为了研究季节对石家庄地区荷斯坦奶牛超数排卵的影响,对达到12月龄的荷斯坦育成牛逐月进行3次超数排卵。结果表明,头均胚胎总数和头均退化胚胎数各月差异不显著(P>0.05);头均可用胚胎数量3月最高(7.04±4.92),8月最低(3.20±3.33),两者间差异显著(P<0.05),与其它各月间无显著差异。总体而言,超排效果随着气温升高而呈下降的趋势,在气候较为适宜奶牛生理生存状态的季节,超排效果更为理想。说明超数排卵效果春季最好,秋冬季效果好于夏季,超排应避开夏季炎热的月份。To research the influence of seasons on the superovulation of Holstein,the Holstein heifers of 12 months had been superovulated for 3 times among the year.The results showed that there were no significant differences among seasons for the mean number of the recovered embryos and the degenerated embryos（P0.05）,the mean number of the transferable embroys in march（7.04±4.92） was significantly higher than the data in august（3.20±3.33）（P0.05）,no significant differences with other months（P0.05）.The increased temperature had a negative influence on the effect of superovulation,the success of superovulation could be obtained in th season which was suitable for the cows physilogical functions.It was concluded that the effect of superovulation was related to the seasons,the best season for superovulation was spring,autumn and winter were better than summer,the tropical months should be avoided for superovulation.

关 键 词：季节 荷斯坦奶牛 超数排卵 

分 类 号：S823[农业科学—畜牧学]