Genetic parameter estimates for body weight in local Venda chickens

D. Norris, J. W. Ngambi

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Genetic parameters were estimated for Venda chicken body weights at hatching, and at 4 weeks, 10 weeks and 21 weeks of age. A single-trait animal model with restricted maximum-likelihood procedures was used. Random effects were additive direct and maternal genetic, common environmental and error. The heritability estimates for direct effects were 0.36, 0.25, 0.41 and 0.22 for hatch, 4 weeks, 10 weeks and 21 weeks, respectively. The maternal effects were estimated at hatch and 4 weeks of age and were not present at later ages. Common environmental effects disappeared with increasing age. There was an antagonistic relationship between direct and maternal effects. The results show potential for genetic improvement of indigenous Venda chickens through selection. Maternal effects should be considered if selection is carried out at early ages.

Original languageEnglish
Pages (from-to)605-609
Number of pages5
JournalTropical Animal Health and Production
Volume38
Issue number7-8
DOIs
Publication statusPublished - Oct 1 2006

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Chickens
South Africa
Body Weight
chickens
maternal effect
body weight
Animal Models
Mothers
genetic improvement
heritability
hatching
animal models
Maternal Inheritance

All Science Journal Classification (ASJC) codes

  • Food Animals
  • Animal Science and Zoology

Cite this

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Genetic parameter estimates for body weight in local Venda chickens. / Norris, D.; Ngambi, J. W.

In: Tropical Animal Health and Production, Vol. 38, No. 7-8, 01.10.2006, p. 605-609.

Research output: Contribution to journalArticle

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