A male linkage map constructed for QTL mapping in Spanish Churra sheep. |
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| Authors: | B Gutiérrez-Gil J J Arranz M F El-Zarei L Alvarez S Pedrosa F San Primitivo Y Bayón |
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| Institution: | Departamento de Producción Animal, Universidad de León, León, Spain. |
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| Abstract: | A male ovine linkage map has been constructed on the basis of 11 half-sib families of a commercial population of Spanish Churra sheep as part of a genome scan for quantitative trait loci mapping. A total of 1421 daughters and their sires were genotyped for 182 microsatellite markers evenly distributed along the ovine autosomes. A total of 259,192 genotypes were obtained, generating an average of 669 informative meioses per marker. An autosomal genome length of 3262 cM was estimated for the Churra population with a mean marker interval of 17.86 cM. Our map represents an approximate 90% coverage of the autosomal ovine genome and constitutes a useful tool for the genetic dissection of complex traits in this breed. General agreement was found between the Churra map and other published maps for sheep, despite certain length discrepancies. |
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| Keywords: | Genetic map linkage sheep |
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