Estimation of the additive and dominance variances in SA Duroc pigs

D. Norris, L. Varona, J. W. Ngambi, D. P. Visser, C. A. Mbajiorgu, S. F. Voordewind

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The objective of this study was to estimate dominance variance for number born alive (NBA), 21-day litter weight (LWT21) and interval between parities (FI) in South African Duroc pigs. A total of 10,703 NBA, 6883 LWT 21 and 6881 FI records were analysed. Bayesian analysis via Gibbs sampling was used to estimate variance components and genetic parameters. Estimates of additive genetic variance were 0.554, 16.84 and 4.535 for NBA, FI and LWT21, respectively. Corresponding estimates of dominance variance were 0.246, 9.572 and 0.661 respectively. Dominance effects were statistically not significant for all traits studied. Further research utilizing a larger data set is necessary to make concrete conclusions on the importance of dominance genetic effects for the traits studied.

Original languageEnglish
Pages (from-to)144-147
Number of pages4
JournalLivestock Science
Volume131
Issue number1
DOIs
Publication statusPublished - Jun 1 2010

Fingerprint

Bayes Theorem
Duroc
Parity
dominance (genetics)
Swine
Weights and Measures
swine
Research
litter weight
Bayesian theory
parity (reproduction)
genetic variance
Datasets
sampling

All Science Journal Classification (ASJC) codes

  • Animal Science and Zoology
  • veterinary(all)

Cite this

Norris, D., Varona, L., Ngambi, J. W., Visser, D. P., Mbajiorgu, C. A., & Voordewind, S. F. (2010). Estimation of the additive and dominance variances in SA Duroc pigs. Livestock Science, 131(1), 144-147. https://doi.org/10.1016/j.livsci.2010.03.005
Norris, D. ; Varona, L. ; Ngambi, J. W. ; Visser, D. P. ; Mbajiorgu, C. A. ; Voordewind, S. F. / Estimation of the additive and dominance variances in SA Duroc pigs. In: Livestock Science. 2010 ; Vol. 131, No. 1. pp. 144-147.
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Norris, D, Varona, L, Ngambi, JW, Visser, DP, Mbajiorgu, CA & Voordewind, SF 2010, 'Estimation of the additive and dominance variances in SA Duroc pigs', Livestock Science, vol. 131, no. 1, pp. 144-147. https://doi.org/10.1016/j.livsci.2010.03.005

Estimation of the additive and dominance variances in SA Duroc pigs. / Norris, D.; Varona, L.; Ngambi, J. W.; Visser, D. P.; Mbajiorgu, C. A.; Voordewind, S. F.

In: Livestock Science, Vol. 131, No. 1, 01.06.2010, p. 144-147.

Research output: Contribution to journalArticle

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Norris D, Varona L, Ngambi JW, Visser DP, Mbajiorgu CA, Voordewind SF. Estimation of the additive and dominance variances in SA Duroc pigs. Livestock Science. 2010 Jun 1;131(1):144-147. https://doi.org/10.1016/j.livsci.2010.03.005