肉牛同期排卵-定时输精技术的应用进展

doi:10.16431/j.cnki.1671-7236.2021.08.026

摘要/Abstract

摘要： 近年来，中国肉牛产业不断调整优化，母牛存栏量持续增长，但国内可繁殖肉用母牛数量持续减少，母牛受胎率普遍不高，犊牛成活率低，已成为制约肉牛产业发展的瓶颈环节。同期排卵-定时输精技术通过应用生殖激素处理调控母牛发情周期，促进母牛发情，从而提高母牛参配率，在提高母牛繁殖力中得到广泛应用，是当今家畜繁殖技术的一个重大突破。由于中国肉牛养殖集约化程度低，同期排卵-定时输精技术在肉牛上的应用尚未得到广泛重视。不同同期排卵-定时输精处理程序各有特点，在实际应用中影响同期排卵-定时输精程序处理母牛发情配种妊娠率的因素很多，如何对该技术实现进一步优化是当前面临的重大难题。国内外针对于同一生殖激素的不同浓度、不同激素组合及激素注射的间隔时间、激素的替换等做了大量的研究。文章综述了定时输精技术原理、主要程序及国内外肉牛同期排卵-定时输精技术研究进展，以期为建立高效的肉牛同期排卵-定时输精技术体系实现该技术在肉牛产业上的应用提供参考。

关键词: 肉牛; 同期发情; 定时输精

Abstract: In recent years, the beef cattle industry in China has been optimized in adjustment, and the number of cows in stock increases continuously.However, the number of breeding beef cows continues to decline.The low conception rate in cows and survival rate of calves have become the bottleneck restricting the development of the beef cattle industry.Ovsynch and timed artificial insemination (Ovsynch-TAI) technology has been widely used in improving the reproduction performance of cows by regulating the estrous cycle through the application of reproductive hormones, promoting the estrus of cows, and raising the estrus detection rate.It is perceived as a major breakthrough in livestock reproduction technique.Notwithstanding, the application of this technique has not been paid extensive attention due to the low intensive degree of beef cattle breeding in China.Different TAI procedures have their own characteristics, and there are many factors affecting the pregnancy rate during its application.How to further optimize this technique is a major problem.Large numbers of research have been done on different concentrations of reproductive hormone, different hormone combination, the interval of hormone injection, as well as hormone replacement.This paper reviewed the principle and main procedures of TAI, and the research progress of this technology in beef cattle, which was expected to establish an effective TAI technique system and provide references for the application in beef cattle industry.

Key words: beef cattle; synchronous estrus; timed artificial insemination

中图分类号:

S823.9⁺2

冯志强, 王林, 赵善江, 郝海生, 杜卫华, 赵学明, 邹惠影, 朱化彬, 庞云渭. 肉牛同期排卵-定时输精技术的应用进展[J]. 中国畜牧兽医, 2021, 48(8): 2937-2946.

FENG Zhiqiang, WANG Lin, ZHAO Shanjiang, HAO Haisheng, DU Weihua, ZHAO Xueming, ZOU Huiying, ZHU Huabin, PANG Yunwei. Application Progress on Ovsynch and Timed Artificial Insemination Technology in Beef Cattle[J]. China Animal Husbandry and Veterinary Medicine, 2021, 48(8): 2937-2946.

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