title: Use of the sex-linked barring (B) gene for chick sexing on an eumelanotic columbian background.
abstract: A study was carried out to see whether the near-black down of an eumelanotic columbian phenotype (eWh/eWh, Co/Co, Ml/Ml) could be used in color sexing crosses as a background for the expression of the sex-linked barring (B) gene. Barred (B) and nonbarred (b+) alleles were accurately identified on a heavily eumelanotic columbian phenotype, which provides a brown-faced black down for the B-induced white head spot. Color sexing was possible due to the association between barred males (B/b+) and white head spot. Average accuracy obtained was 97%. Sexing was not possible in the presence of heterozygous Ml/ml+.
authors.affiliation: Departamento de Producción Animal, Instituto Nacional de Investigaciones Agrarias, Madrid, Spain.
authors.forename: J L
authors.initials: JL
authors.lastname: Campo
mesh_terms: D000818:Animals; D001947:Breeding; D002645:Chickens / Q000235:genetics*; D005241:Feathers; D005260:Female; D008040:Genetic Linkage; D005838:Genotype; D008297:Male; D010858:Pigmentation / Q000235:genetics*; D012732:Sex Determination Analysis