Julanov Mardan, Jumatayeva Kumis, Koibagarov Kanat, Tagayev Orynbay, Baitlessov Yerbulat, Julanova Nursulu
Kazakh National Agrarian Research University, Almaty, Kazakhstan.
Zhangir Khan University, Uralsk, Kazakhstan.
J Adv Vet Anim Res. 2024 Mar 31;11(1):100-106. doi: 10.5455/javar.2024.k753. eCollection 2024 Mar.
This study aimed to determine the effects of biologically active substances and electrical stimulation of the uterus in cows on the effectiveness of estrus synchronization.
Ninety = 90) Kazakh white-headed cows were synchronized with two injections of gonadotropin-releasing hormone on days 0 and 9 and prostaglandin F2α on day 7. The cows were divided into six groups and, during the protocol, treated with biologically active substances (Tetramag, Selevetum, antiseptic-stimulator Dorogov 2 fraction, groups 2, 3, and 4). Cows in groups 5 and 6 were treated with the same substances but additionally had electrical stimulation of the uterus, while cows in group 1 were left untreated and served as a control.
The results have shown that on Day 0, no differences were observed in E2 concentrations between the groups. However, on the 10th day, a significant disparity was noted in the E2 level among cows in group 6 compared to groups 2, 3, 4, and the control group. Conversely, no significant differences were observed between groups 5 and 6. Likewise, the fertility rate in cows from group 6 was significantly higher compared to groups 2, 3, 4, and the control group, with no significant differences between groups 5 and 6.
It can be concluded that the utilization of electrical stimulation of the uterus and the inclusion of certain biological substances during the estrus synchronization protocol demonstrate a positive effect on the reproductive performance of beef cattle in Kazakhstan.
本研究旨在确定母牛体内生物活性物质及子宫电刺激对发情同步化效果的影响。
90头哈萨克白头母牛于第0天和第9天注射促性腺激素释放激素，第7天注射前列腺素F2α进行同步发情处理。母牛被分为6组，在实验过程中，2、3、4组用生物活性物质（四镁、硒维他、防腐剂刺激剂多罗戈夫2号组分）处理。5、6组用相同物质处理，但额外进行子宫电刺激，而第1组不做处理作为对照。
结果表明，第0天，各组间雌二醇（E2）浓度无差异。然而，第10天，6组母牛的E2水平与2、3、4组及对照组相比存在显著差异。相反，5组和6组之间未观察到显著差异。同样，6组母牛的受胎率显著高于2、3、4组及对照组，5组和6组之间无显著差异。
可以得出结论，在发情同步化方案中使用子宫电刺激并加入某些生物物质，对哈萨克斯坦肉牛繁殖性能有积极影响。
