한국수정란이식학회지 (Journal of Embryo Transfer)

  • 제28권2호
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  • Pages.87-93
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  • 2013
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  • 2508-755X(pISSN)
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  • 2288-0178(eISSN)
한국수정란이식학회 (The Korean Society of Embryo Transfer)
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Recent Advances in Artificial Insemination (AI) in Horses: Stallion Management, Processing and Preservation of Semen and Insemination Techniques

  • Yoon, Minjung (Department of Horse, Companion and Wild Animal Science, Kyungpook National University)
  • 투고 : 2013.04.28
  • 심사 : 2013.05.14
  • 발행 : 2013.06.30
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초록

The efficiency of artificial insemination (AI) for horses remains unsatisfactory. It is mainly because each process of AI causes a detrimental effect on semen quality. To sustain quality of semen properly, several factors including libido of stallions and sperm damage during sperm processing and preservation should be considered. Stallions with decent libido produce a high ratio of sperm to seminal plasma in their ejaculates, which is the ideal semen composition for maintaining sperm quality. Thus, to maximize the fertility rate upon AI, stallions should be appropriately managed to enhance their libido. Seminal plasma should have a positive effect on horse fertility in the case of natural breeding, whereas the effects of seminal plasma on both sperm viability and quality in the context of AI remain controversial. Centrifugation of semen is performed during semen processing to remove seminal plasma and to isolate fine quality sperm from semen. However, the centrifugation process can also result in sperm loss and damage. To solve this problem, several different centrifugation techniques such as Cushion Fluid along with dual and single Androcoll-E$^{TM}$ were developed to minimize loss of sperm and to damage at the bottom of the pellet. Most recently, a new technique without centrifugation was developed with the purpose of separating sperm from semen. AI techniques have been advanced to deliver sperm to optimal region of female reproductive tract at perfect timing. Recombinant equine luteinizing hormone (reLH) and low dose insemination techniques have been developed to maximize both fertility rate and the efficiency of AI. Horse breeders should consider that the entire AI procedure should be optimized for each stallion due to variation in individual horses for a uniformed AI protocol.

키워드

참고문헌

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