Effect of Sex on Estimates of Genetic Parameters for Daily Gain and Ultrasonic Backfat Thickness in Swine

C. Hicks, M. Satoh, K. Ishii, S. Kuroki, T. Fujiwara, T. Furukawa

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

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 backfat 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 correlatioin of 0.95, indicating that identical genes influence backfat thickness in boars and gilts.

Original languageEnglish
Pages (from-to)677-681
Number of pages5
JournalAsian-Australasian Journal of Animal Sciences
Volume12
Issue number5
DOIs
Publication statusPublished - 1999 Aug

Keywords

  • Genetic Correlation
  • Genotype
  • Heritability
  • Pigs
  • Sex

ASJC Scopus subject areas

  • Food Science
  • Animal Science and Zoology
  • Engineering(all)

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