Heritability estimates derived from threshold analyses for reproduction and stayability traits in a beef cattle herd

Simple item page
dc.contributor.authorVan Der Westhuizen R.R.
dc.contributor.authorSchoeman S.J.
dc.contributor.authorJordaan G.F.
dc.contributor.authorVan Wyk J.B.
dc.date.accessioned2011-05-15T15:54:44Z
dc.date.available2011-05-15T15:54:44Z
dc.date.issued2001
dc.description.abstractThe object of this study was to estimate heritabilities and sire breeding values for stayability and reproductive traits in a composite multibreed beef cattle herd using a threshold model. A GFCAT set of programmes was used to analyse reproductive data. Heritabilities and product-moment correlations between predicted breeding values for stayability at 36, 48, 60, 72 and 84 months of age, calving success and longevity were estimated. The estimated heritabilities on the underlying scale for these traits were 0.06, 0.10, 0.06, 0.03, 0.11, 0.03 and 0.08 respectively. Product-moment correlations between breeding values for stayability traits were low. The highest correlation of 0.22 was obtained between the ages of 36 and 48 months. Heritability estimates and correlations between traits appear to be of such a low magnitude that selection for these characteristics would result in limited genetic improvement, and also indicate that sires had little influence on the stayability, longevity or calving success of their daughters.
dc.description.versionArticle
dc.identifier.citationSouth African Journal of Animal Sciences
dc.identifier.citation31
dc.identifier.citation1
dc.identifier.issn3751589
dc.identifier.urihttp://hdl.handle.net/10019.1/9372
dc.titleHeritability estimates derived from threshold analyses for reproduction and stayability traits in a beef cattle herd
dc.typeArticle
Files
Collections
Stellenbosch University - Scopus Publications