Improving the efficiency of estrus synchronization in cows

TL;DR

This study found that using electrical stimulation and certain substances during estrus synchronization improves cow fertility in Kazakhstan.

Contribution

The novel finding is that electrical stimulation combined with specific biologically active substances enhances estrus synchronization effectiveness in cows.

Findings

Cows in group 6 had significantly higher E2 levels on day 10 compared to other groups.

Fertility rates were significantly higher in group 6 than in groups 2, 3, 4, and the control.

Electrical stimulation and biological substances positively affect reproductive performance in beef cattle.

Abstract

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 (n = 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.

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