PMID: 12211373Sep 5, 2002Paper

Genetic parameters and trends for lean growth rate and its comvonents in U.S. Yorkshire, Duroc, Hampshire, and Landrace pigs

Journal of Animal Science
P ChenK J Koehler

Abstract

Records on 361,300 Yorkshire, 154,833 Duroc, 99,311 Hampshire, and 71,097 Landrace pigs collected between 1985 and April of 2000 in herds on the National Swine Registry Swine Testing and Genetic Evaluation System were analyzed. Animal model and REML procedures were used to estimate random effects of animal genetic, common litter, maternal genetic, and the covariances between animal and maternal for lean growth rate (LGR), days to 113.5 kg (DAYS), backfat adjusted to 113.5 kg (BF), and loin eye area adjusted to 113.5 kg (LEA). Fixed effects of contemporary group and sex were also in the statistical model. Based on the single-trait model, estimates of heritabilities were 0.44, 0.44, 0.46, and 0.39 for LGR; 0.35, 0.40, 0.44, and 0.40 for DAYS; 0.48, 0.48, 0.49, and 0.48 for BF; and 0.33, 0.32, 0.35, and 0.31 for LEA in the Yorkshire, Duroc, Hampshire, and Landrace breeds, respectively. Estimates of maternal genetic effects were low and ranged from 0.01 to 0.05 for all traits across breeds. Estimates of common litter effects ranged from 0.07 to 0.16. A bivariate analysis was used to estimate the genetic correlations between lean growth traits. Average genetic correlations over four breeds were -0.83, -0.37, 0.44, -0.07, 0.08, and -...Continue Reading

Citations

Nov 4, 2004·Evolution; International Journal of Organic Evolution·Guy M L PerryLouis Bernatchez
Jan 21, 2006·Journal of Animal Science·D B EdwardsR O Bates
Feb 6, 2008·The Journal of Veterinary Medical Science·Yuzo Koketsu
Jan 31, 2014·Journal of Animal Breeding and Genetics = Zeitschrift Für Tierzüchtung Und Züchtungsbiologie·B DubeK Dzama
Nov 11, 2014·Annual Review of Animal Biosciences·Alison L Van EenennaamJack C M Dekkers
May 11, 2010·Journal of Applied Genetics·M SwitonskiM Grzes
Sep 2, 2015·Asian-Australasian Journal of Animal Sciences·Joon-Ho LeeKyung-Do Park

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