奶牛同期发情-定时输精技术研究进展

doi:10.11843/j.issn.0366-6964.2024.04.007

Abstract

Abstract: Reducing the numbers of insemination, shortening pregnancy intervals, and increasing the pregnancy rate of cows are the important guarantee for improving the reproductive efficiency of dairy cows and reducing breeding costs. Estrous synchronization-fixed-time artificial insemination (ES-TAI) can not only meet the above requirements, but also skip the estrus identification process and directly carry out timed insemination, thus maximizing the reproduction rate of dairy cows. In the article, classic and new ES-TAI technologies of dairy cows were summarizes according to different processing methods, focusing on the principles, handling procedures and practical application effects of those technologies, which will provide some references for the further research and development of more efficient ES-TAI technologies in dairy cows and the reproduction management of dairy cows in large-scale farms.

Key words: dairy cows, estrus synchronization-fixed-timed artificial insemination technology, pregnancy rate, pre-ovsynch, double ovsynch

CLC Number:

S823.91

XIANG Hui, GUI Linsen, YANG Di, WEI Shihao, GONG Yanbin, SHI Yuangang, MA Yun, DAN Xingang. Research Progress on the Estrus Synchronization-fixed-timed Artificial Insemination Technology in Dairy Cows[J]. Acta Veterinaria et Zootechnica Sinica, 2024, 55(4): 1412-1422.

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Research Progress on the Estrus Synchronization-fixed-timed Artificial Insemination Technology in Dairy Cows

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