Sex chromosomes abnormalities in Purebred Spanish Horses with Reproductive Problems: Case Reports

MIGUEL MORENO MILLÁN; SEBASTIÁN DEMYDA PEYRÁS; DELIA SALENO

Bulletin UASVM, Veterinary Medicine

Academicpres

Lugar: Cluj Napoca; Año: 2012 vol. 69 p. 1 - 7

1843-5378

In the past 10 years the Veterinary Hospital of the Faculty of Veterinary (University of Córdoba, Spain) and the National Association of Spanish Horse Breeders (ANCCE) have received many cases of horses, males and females from Pure Spanish Breed (PRE), with reproductive problems. As a result of an interdepartmental cooperation already exists in our Faculty, all of them have been studied from the cytogenetic point of view and we have found the following chromosomal abnormalities: 63,X0; 63 X0/64,XX; 63,X0/64,XY; 63,X0/64,XX/64,XY; 63,X0/64, XX/64,XY/65, XXX; 64,XX/64,XY; 65,XXX; 64,XX male sex reversal, 64,XY female sex reversal. The reproductive phenotype has varied from a normal female to normal male different reproductive manifestations through intersex and specific cases of reversal sex, both males and females.