为了研究适用于高产奶牛的同期发情程序方案,将218头膘情良好、子宫和卵巢发育正常的不同胎次荷斯坦牛随机分成两组,试验1组为106 头,试验2组为112 头,分别采用两种同期程序（0.5.6.8和0.7.8.9）进行处理,测定情期受胎率,用于评价两种同期程序对高产奶牛的适用性。结果表明,试验2组情期受胎率平均为41.96%,显著高于试验1组的平均情期受胎率30.19%（P<0.01）;将参与试验的218头牛根据胎次分成1胎组、2胎组和3胎及以上组,分析不同胎次对输精效果的影响,2胎情期受胎率最高为40.68%,与1胎情期受胎率存在显著差异（P<0.05）,3胎及以上的情期受胎率最低为28.79%,与2胎、1胎存在极差异显著（P<0.01）。
In order to study the same period is suitable for high producing dairy cows program plan, will test the body condition is good, normal uterus, ovarian development in different times 218 holstein cows, randomly divided into 1, 2, 106 and 112, respectively, in each group separately using two year program (0.5.6.8 and 0.7.8.9) for processing, measuring period conception rate, to evaluate the applicability of the two year program for high producing dairy cows. The results showed that the pregnancy rate of experimental group 2 (41.96%) was significantly higher than that of experimental group 1 (30.19%) (P< 0.01). In addition, the influence of different parities on the effect of sperm transfusion was analyzed. There was a significant difference between the highest pregnancy rate of 40.68% and that of 1 pregnancy period (P<0.05), and the lowest pregnancy rate of 28.79% in 3 or more parities was significantly different from that of 2 and 1 pregnancy (P<0.01).
[1] 卜登攀,张利宇,史建民,等. 奶牛生产形势分析及后市展望[J]. 中国畜牧业,2019(17):21.
[2] 孟凡曜. 奶牛发情鉴定与人工输精方法[J]. 畜牧兽医科技信息,2019(7):32.
[3] 姚国良. 定时输精程序(Ovsynch/TAI)在奶牛繁殖上的应用效果[J]. 中国奶牛,2008(12):33-35.
[4] Roche J F,Mihm M,Diskin M.et al.A review of regulation of follicle growth in cattle[J]. Journal of Animal Science,1998,76(s3):16-29.
[5] 张廷青. 张博士实战解析——奶牛高效繁殖[M]. 北京:化学工业出版社,2014.
[6] 河北省农业科学院畜牧兽医研究所围场基点工作组. 影响围场县大牲畜繁殖率因素的调查[J].华北农学报,1965(2):75-80.
[7] 刘双行. 同期排卵定时输精技术在水牛养殖中的应用[J]. 中国奶牛,2019(7):25-28.
[8] 王雅晶,朱化彬,王雅春,等. 世界奶牛繁殖研究的知识图谱分析[J]. 畜牧兽医学报,2014,45(3):494-501.
