Asian-Australasian Journal of Animal Sciences

  • 제12권5호
  • /
  • Pages.677-681
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  • 1999
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  • 1011-2367(pISSN)
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  • 1976-5517(eISSN)
아세아태평양축산학회 (Asian Australasian Association of Animal Production Societies)
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Effect of Sex on Estimates of Genetic Parameters for Daily Gain and Ultrasonic Backfat Thickness in Swine

  • Hicks, C. (National Institute of Animal Industry) ;
  • Satoh, M. (National Institute of Animal Industry) ;
  • Ishii, K. (National Institute of Animal Industry) ;
  • Kuroki, S. (Kawaminami Branch, Miyazaki Livestock Experiment Station) ;
  • Fujiwara, T. (Animal Industry Research Institute, Iwate Agricultural Research Center) ;
  • Furukawa, T. (National Institute of Animal Industry)
  • 투고 : 1998.09.15
  • 심사 : 1998.11.03
  • 발행 : 1999.08.01
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초록

Estimates were made of genetic parameters for average daily gain (ADG) and average backfat thickness (ABF), and of the effect of sex on estimates of variance-covariance components for average daily gain of boars (DGM) and gilts (DGF) and average bacfat thickness of boars (BFM) and gilts (BFF) by residual maximum likelihood (REML) under a bivariate animal model. Data included a total of 2233 records (757 for boars and 1476 for gilts) of the Large White breed born between 1981 and 1986 in Miyazaki and Iwate prefectures in Japan. Heritability estimates for ADG and ABF were 0.43 and 0.69, respectively, with a genetic correlation of -0.08. Heritability estimates for DGM and DGF were 0.54 and 0.46, respectively, with a genetic correlation of 0.79, including that the two traits are influenced by similar but not identical genes. Respective estimates for BFM and BFF were 0.71 and 0.72 with a genetic correlation of 0.95, indicating that identical genes influence backfat thickness in boars and gilts.

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