Genetic parameters for feed efficiency traits and their relationships with growth and carcass traits in Duroc pigs

M. A. Hoque, K. Suzuki, H. Kadowaki, T. Shibata, T. Oikawa

研究成果: Article査読

30 被引用数 (Scopus)

抄録

Summary Genetic parameters for feed efficiency traits of 380 boars and growth and carcass traits of 1642 pigs (380 boars, 868 gilts and 394 barrows) in seven generations of Duroc population were estimated. Feed efficiency traits included the feed conversion ratio (FCR), and nutritional (RFInut), phenotypic (RFIphe) and genetic (RFIgen) residual feed intake. Growth and carcass traits were the age to reach 105-kg body weight (A105), loin eye muscle area (EMA), backfat (BF), intra-muscular fat (IMF) and meat tenderness. The mean values for RFIphe and RFIgen were close to zero and for RFInut was negative. All the measures of feed efficiency were moderately heritable (h2 = 0.31, 0.38, 0.40 and 0.27 for RFInut, RFIphe, RFIgen and FCR respectively). The heritabilities for all growth and carcass traits were moderate (ranged from 0.37 to 0.45), except for BF, which was high (0.72). The genetic correlations of RFIphe and RFIgen with A105 were positive and high. Measures of RFI were correlated negatively with EMA. BF was more strongly correlated with measures of RFI (rg ≥ 0.73) than with FCR (rg = 0.52). Selection for daily gain, EMA, BF and IMF caused favourable genetic changes in feed efficiency traits. Results of this study indicate that selection against either RFIphe or RFIgen would give a similar correlated response in carcass traits.

本文言語English
ページ(範囲)108-116
ページ数9
ジャーナルJournal of Animal Breeding and Genetics
124
3
DOI
出版ステータスPublished - 2007 6 1

ASJC Scopus subject areas

  • 食用動物
  • 動物科学および動物学

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