Research Advances and Application Status of Timed Artificial Insemination (TAI) in Farm Animals |
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| Authors: | WU Jun-hui CAO Ding-ren LIU Yan-ting GAO Feng-lei LI Li WU Tong-shan ZHANG Shou-quan WEI Heng-xi |
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| Institution: | 1. Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou 510642, China;
2. Guangzhou AIB Polytechnic College, Guangzhou 510507, China |
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| Abstract: | With the wide application of the artificial insemination (AI) in animal husbandry,the utilization rate of excellent sire got greatly improved.The key point of AI is predicting the time of ovulation and insemination accurately.It is also the point which the animal husbandry technologists highly concerned to improve the application effect of AI.Estrus and ovulation are regulated minutely by reproductive hormones in vivo in farm animals.Timed artificial insemination (TAI) is based on the synchronization of estrus and ovulation,both of which are triggered by reproductive hormones.So the optimal time for AI could be determined from the reproductive hormone treatment.The purpose of TAI is to improve the reproduction performance of farm animals,reduce the workload of identification of estrus,and promote batch management.This review mainly summerized the principles of TAI and its applications status,and the prospects was also discussed.It would provide a reference for the research and application of new reproductive technology in farm animals. |
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| Keywords: | farm animals AI TAI reproduction hormone estrus ovulation |
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