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KMID : 0900920020260020111
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Korean journal of Animal Reproduction
2002 Volume.26 No. 2 p.111 ~ p.117
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Effects of Breed, Insemination Time, Sperm Concentration, Farm and Year on Reproductive Performance of Sows Inseminated by Frozen Boar Semen
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Kim I. C.
Lee Chang-Hee
Lee Seung-Ho
Park Chang-Sik
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Abstract
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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 5mell 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 5.0times10^{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 (5mell maxi-straw) from 1995 to 1999 was 68.3~74.6%, 61.7~67.6% and 8.1~8.7 heads.
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KEYWORD
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Artificial insemination, Sperm concentration, Frozen boar semen
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