Inbreeding in the Dohne Merino breed in South Africa

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dc.contributor.authorSwanepoel, J. W.en_ZA
dc.contributor.authorVan Wyk, J. B.en_ZA
dc.contributor.authorCloete, S. W. P. (Schalk Willem Petrus van der Merwe)en_ZA
dc.contributor.authorDelport, G. J.en_ZA
dc.date.accessioned2011-05-15T15:54:39Z
dc.date.available2011-05-15T15:54:39Z
dc.date.issued2007
dc.descriptionCITATION: Swanepoel, J. W., et al. 2007. Inbreeding in the Dohne Merino breed in South Africa. South African Journal of Animal Science, 37(3):176-179.
dc.descriptionThe original publication is available at https://www.sasas.co.za
dc.description.abstractThe actual level of inbreeding and the effect of inbreeding depression on yearling body weight and fleece traits in the South African Dohne Merino population were investigated. All available pedigree data, which comprised of 266 268 records (302 169 animals including base parents) for the period 1975 to 2003 were used for calculating individual inbreeding coefficients. Inbreeding depression was estimated as the regression of performance (corrected for fixed effects) on the individual and dam inbreeding coefficients, fitting an animal model. The rate of inbreeding (ΔF) was estimated as the difference between the individual inbreeding (Ft) and the inbreeding of the parents (Ft-1) divided by (1-Ft-1). The level of inbreeding (F) in the SA Dohne Merino sheep population is very low. The proportion of animals that was inbred to some extent increased from 0.00 (average F = 0) in 1980 to 0.38 in 2003 (average F = 0.012). No significant inbreeding depression on body weight and fleece traits could be found. In general the results suggest that inbreeding at present is not a serious problem in the South African Dohne Merino breed.
dc.description.urihttps://www.sasas.co.za/journals/inbreeding-in-the-dohne-merino-breed-in-south-africa-short-communication/
dc.description.versionPublisher's version
dc.description.versionAuthors retain copyright
dc.format.extent4 pages
dc.identifier.citationSwanepoel, J. W., et al. 2007. Inbreeding in the Dohne Merino breed in South Africa. South African Journal of Animal Science, 37(3):176-179
dc.identifier.issn0375-1589 (online)
dc.identifier.urihttp://hdl.handle.net/10019.1/9328
dc.language.isoen_ZAen_ZA
dc.publisherSouth African Society for Animal Science
dc.subjectMerino sheep -- Breeding
dc.subjectSheep -- Fertility
dc.subjectSheep -- Reproduction
dc.titleInbreeding in the Dohne Merino breed in South Africaen_ZA
dc.typeArticle
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