[en] Two quantitative trait loci (QTL) affecting female fertility were mapped in French dairy cattle. Phenotypes were non-return rates at 28, 56, 90 and 282 days after insemination. On chromosome 3, a QTL was significant at 1% for non-return rate at 90 days, suggesting that it affects early fertility events. An analysis of SLC35A3, which causes complex vertebral malformation, excluded this gene from the QTL interval. On chromosome 7, a QTL was almost significant (P = 0.05) for non-return rate at 282 days. This QTL was associated with abortion and stillbirth problems. Use of appropriate phenotypes appeared important for fine-mapping QTL associated with fertility.
Disciplines :
Animal production & animal husbandry Genetics & genetic processes
Author, co-author :
Guillaume, F.
Gautier, M.
Ben Jemaa, S.
Fritz, S.
Eggen, A.
Boichard, D.
Druet, Tom ; Institut Scientifique de Recherche Agronomique - INRA > Département de Génétique Animale > Station de Génétique Quantitative et Appliquée
Language :
English
Title :
Refinement of two female fertility QTL using alternative phenotypes in French Holstein dairy cattle.
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