Mapping quantitative trait loci for milk production and genetic polymorphisms of milk proteins in dairy sheep
نویسندگان
چکیده
منابع مشابه
Genetic mapping of quantitative trait loci for milk production in sheep.
A backcross pedigree using dairy East Friesian rams and non-dairy Dorset ewes was established specifically to map quantitative trait loci (QTL) affecting milk production in sheep. Ninety nine microsatellite markers of an initial set of 120 were successfully genotyped and informative on 188 animals of this backcross pedigree. Test-day milk records on individual ewes were used to estimate several...
متن کاملQuantitative trait loci underlying milk production traits in sheep.
Improvement of milk production traits in dairy sheep is required to increase the competitiveness of the industry and to maintain the production of high quality cheese in regions of Mediterranean countries with less favourable conditions. Additional improvement over classical selection could be reached if genes with significant effects on the relevant traits were specifically targeted by selecti...
متن کاملQuantitative Trait Loci Affecting Milk Production Traits on BTA 14 in Iranian Holstein Dairy Cattle: A Confirmation
The aim of this study was to refine the position of previously detected quantitative trait loci (QTL) on bovine chromosome 14 affecting milk production traits, using both linkage analysis (LA) and combined disequilibrium and linkage analysis (LDLA) methods, in Iranian Holstein dairy cattle. Analysis data was LRT (likelihood ratio test) and computed using the DMU (estimate the (co)variance compo...
متن کاملEstimation of quantitative trait loci parameters for milk production traits in German Holstein dairy cattle population.
The main objective of this study was to estimate the proportion of total genetic variance attributed to a quantitative trait locus (QTL) on Bos taurus autosome 6 (BTA6) for milk production traits in the German Holstein dairy cattle population. The analyzed chromosomal region on BTA6 spanned approximately 70 cM, and contained 6 microsatellite markers. Milk production data were obtained from rout...
متن کاملMapping quantitative trait loci for milk production and health of dairy cattle in a large outbred pedigree.
Quantitative trait loci (QTL) affecting milk production and health of dairy cattle were mapped in a very large Holstein granddaughter design. The analysis included 1794 sons of 14 sires and 206 genetic markers distributed across all 29 autosomes and flanking an estimated 2497 autosomal cM using Kosambi's mapping function. All families were analyzed jointly with least-squares (LS) and variance c...
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ژورنال
عنوان ژورنال: Genetics Selection Evolution
سال: 2005
ISSN: 0999-193X,1297-9686
DOI: 10.1051/gse:2004033