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Effects of Breed, Insemination Time, Sperm Concentration, Farm and Year on Reproductive Performance of Sows Inseminated by Frozen Boar Semen  

김인철 (축산기술연구소)
이장희 (축산기술연구소)
김현종 (축산기술연구소)
이성호 (공주대학교 영상보건대학)
박창식 (충남대학교 동물자원학부)
Publication Information
Korean Journal of Animal Reproduction / v.26, no.2, 2002 , pp. 111-117 More about this Journal
Abstract
This study was carried out to investigate the effects of frozen boar semen on reproductive performance in swine artificial insemination (AI). Many factors, which were breeds, time of insemination, sperm concentration per dose, farm and year were investigated to improve reproductive performance efficiency. Boars were raised at Swine Artificial Insemination Center in National Livestock Research Institute, Sunghwan, Chungnam, Korea. This experiment was carried out from 1995 to 2000. There were no differences in swine AI with frozen boar semen using 5$m\ell$ maxi-straw among 3 breeds (Landrace, Yorkshire, Duroc), 2 or 3 times insemination per estrus, and 3 different sperm numbers of 3.0, 4.0, and 5.0$\times$10$^{9}$ per dose of insemination. However, non-return rate and litter size of sows inseminated with frozen boar semen of commercial farms were different according to farm management system and inseminator's skill. Conception rate, farrowing rate and number of pigs born alive per litter by artificial insemination with frozen boar semen (5$m\ell$ maxi-straw) from 1995 to 1999 was 68.3~74.6%, 61.7~67.6% and 8.1~8.7 heads.
Keywords
Artificial insemination; Sperm concentration; Frozen boar semen;
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