A male linkage map constructed for QTL mapping in Spanish Churra sheep.
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.
Gutiérrez-Gil
B
B
Departamento de Producción Animal, Universidad de León, León, Spain.
Arranz
J J
JJ
El-Zarei
M F
MF
Alvarez
L
L
Pedrosa
S
S
San Primitivo
F
F
Bayón
Y
Y
D000818:Animals; D002874:Chromosome Mapping; D008297:Male; D018895:Microsatellite Repeats; D040641:Quantitative Trait Loci; D012756:Sheep / Q000145:classification / Q000235:genetics*; D013030:Spain; D013045:Species Specificity