+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Estimation of variance components due to competition effects for selected lines of swine

Estimation of variance components due to competition effects for selected lines of swine

Proceedings of the 8th World Congress on Genetics Applied to Livestock Production, Belo Horizonte, Minas Gerais, Brazil, 13-18 August, 2006: 17-03

Components of variance for average daily gain (ADG, g) for models including genetic competition effects were estimated for selected lines of swine with MTDFREML (11 235 pigs). With full model, estimates were 3636, 13, 18, 1746 and 6863 for direct ( sigma d2), direct competition ( sigma dc), competition ( sigma c2), pen ( sigma pg2) and residual ( sigma e2) (co)variance components, respectively with competition genetic variance statistically significantly different from zero.

Please choose payment method:

(PDF emailed within 1 workday: $29.90)

Accession: 012786693

Download citation: RISBibTeXText

Related references

Estimation of genetic parameters in selected lines of swine using models with competition effects.. 2007

Estimation of (co) variance components due to genetic competition effects in pigs. Journal of Animal Science 83: 6-7, 2005

Components of variance due to competition in duroc swine. Arquivo Brasileiro de Medicina Veterinaria e Zootecnia 36(2): 191-202, 1984

Estimation of variance components with unbalanced data in a maternal effects model ii. maximum likelihood estimators of variance components for direct and maternal effects of 8 week weights of large white pigs. Journal of Animal Breeding and Genetics 105(6): 462-467, 1988

Comparison of plasma FSH concentration in boars and gilts from lines selected for ovulation rate and embryonal survival, and litter size and estimation of (co)variance components for FSH and ovulation rate. Journal of Animal Science 78(6): 1430-1435, 2000

Estimation models of variance components for farrowing interval in swine. Brazilian Archives of Biology and Technology 52(1): 69-76, 2009

Estimation of Variance Components in the Mixed-Effects Models: A Comparison Between Analysis of Variance and Spectral Decomposition. Journal of Statistical Planning and Inference 139(12): 3962-3973, 2010

Estimation of variance components in populations selected over multiple generations. Acta Agriculturae Scandinavica 39(1): 79-90, 1989

Estimation of variance components under dominance with simulated purebred lines. Archiv fur Tierzucht 47(4): 387-395, 2004

Estimation of variance components for teat number in swine using REML and Gibbs sampler. Journal of Animal Science 77(SUPPL 1): 136, 1999

Studies on competition between various genotypes in plant stands. I. Modification of Sakai's method for the estimation of the genetic variance, environmental variance and competitional variance of a population. Silv. Genet, 18: 186-92, 1969

Estimates variance components in lines of Tribolium castaneum selected for pupa weight. Journal of Animal Science 75(SUPPL 1): 35, 1997

Nonnegative estimation of variance components in multivariate unbalanced mixed linear models with two variance components. Journal of Statistical Planning and Inference 115(1): 215-234, 2003

On identifiability of (co)variance components in animal models with competition effects. Journal of Animal Breeding and Genetics 125(6): 371-381, 2009

Estimation of (co)variance components for reproductive traits in Angus beef cattle divergently selected for blood serum IGF-I concentration. Journal of Animal Science 82(8): 2285-2292, 2004