title: Incidence of 1 29 translocation in Venezuelan Creole bulls.
abstract: The Venezuelan Creole breed cattle is a Bos taurus well adapted to tropical conditions; however, it has demonstrated a low fertility rate. Recently, improvement in animal production by selection based on chromosomal analysis has allowed for the erradication of abnormalities involved in fertility problems, especially that of the 1 29 translocation. In the present work chromosomal analyses were carried out on 60 Creole bulls. Heparinized peripheral blood cells were cultured rendering metaphase spreads and subsequently stained by G- and C-banding techniques. The 1 29 translocation was observed in 13 of the 60 bulls. The occurrence of this translocation in Creole cattle is discussed.
authors.affiliation: Departamento de Bilogía de Organismos, Laboratorio de Reproducción y Desarrollo Animal, Universidad Simón Bolívar, Caracas, Venezuela.
authors.forename: M G
authors.initials: MG
authors.lastname: Muñoz
authors.forename: D
authors.initials: D
authors.lastname: Ocanto
authors.forename: M L
authors.initials: ML
authors.lastname: Madriz
authors.forename: R
authors.initials: R
authors.lastname: Medina
authors.forename: O
authors.initials: O
authors.lastname: Vera