Please use this identifier to cite or link to this item:
|Title:||Mapping Quantitative Trait Loci Affecting Female Reproductive Traits on Porcine Chromosome 8||Contributor(s):||King, Annemarie H (author); Jiang, Zhihua (author); Gibson, John Paul (author); Haley, Chris S (author); Archibald, Alan L (author)||Publication Date:||2003||DOI:||10.1095/biolreprod.102.012955||Handle Link:||https://hdl.handle.net/1959.11/3259||Abstract:||An understanding of the genetic control of porcine female reproductive performance would offer the opportunity to utilize natural variation and improve selective breeding programs through marker-assisted selection. The Chinese Meishan is one of the most prolific pig breeds known, farrowing three to five more viable piglets per litter than the European Large White breed. This difference in prolificacy is attributed to the Meishan's superior prenatal survival levels. The present study utilized a three-generation cross in which the founder grandparental animals were purebred Meishan and Large White pigs in a scan for quantitative trait loci (QTL) on porcine chromosome 8 (SSC8) associated with reproductive performance. Reproductive traits, including number of corpora lutea (ovulation rate), teat number, litter size, and prenatal survival, were recorded for as many as 220 F₂ females. Putative QTL for the related traits of litter size and prenatal survival were identified at the distal end of the long arm of SSC8. A physiological candidate gene, SPP1, was found to lie within the 95% confidence interval of these QTL. A suggestive QTL for teat number was revealed on the short arm of SSC8. The present study demonstrates, to our knowledge, the first independent confirmation of QTL for fecundity on SSC8, and these QTL regions provide a crucial starting point in the search for the causal genetic variants.||Publication Type:||Journal Article||Source of Publication:||Biology of Reproduction, 68(6), p. 2172-2179||Publisher:||Society for the Study of Reproduction||Place of Publication:||Madison (WI), USA||ISSN:||0006-3363||Field of Research (FOR):||070201 Animal Breeding||Socio-Economic Objective (SEO):||830399 Livestock Raising not elsewhere classified||Peer Reviewed:||Yes||HERDC Category Description:||C1 Refereed Article in a Scholarly Journal||Statistics to Oct 2018:||Visitors: 304|
|Appears in Collections:||Journal Article|
Files in This Item:
checked on Nov 30, 2018
checked on Mar 4, 2019
Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.