Karyotype evaluation among young horse populations in Poland

• Published in: Schweizer Archiv für Tierheilkunde Vol. 149; no. 5; p. 227
• Main Authors: Bugno, M, Slota, E, Koscielny, M.,National Research Institute of Animal Production, Krakow (Poland)
• Format: Journal Article
• Language: English
• Published: Switzerland 01.05.2007
• Subjects: Animals; Breeding; BREEDS (ANIMALS); CABALLOS; CARIOTIPOS; CARYOTYPE; CHEVAL; Chromosome Aberrations - statistics & numerical data; Chromosome Aberrations - veterinary; CITOGENETICA; CYTOGENETICS; CYTOGENETIQUE; ENCUESTAS; ENQUETE; Female; FERTILIDAD; FERTILITE; FERTILITY; HORSES; Horses - genetics; http://www.fao.org/aos/agrovoc#c_1081; http://www.fao.org/aos/agrovoc#c_2089; http://www.fao.org/aos/agrovoc#c_2862; http://www.fao.org/aos/agrovoc#c_32486; http://www.fao.org/aos/agrovoc#c_3668; http://www.fao.org/aos/agrovoc#c_6055; http://www.fao.org/aos/agrovoc#c_6951; http://www.fao.org/aos/agrovoc#c_7537; In Situ Hybridization, Fluorescence - veterinary; KARYOTYPES; Karyotyping - veterinary; Male; POLAND; POLOGNE; POLONIA; RACE (ANIMAL); RAZAS (ANIMALES); SELECCION; SELECTION; Sex Chromosome Aberrations - veterinary; SURVEYS; Poland
• ISSN: 0036-7281
• DOI: 10.1024/0036-7281.149.5.227

Five hundred young horses of the following breeds: Thoroughbred, Silesian, Malopolska, Wielkopolska, Polish Konik, Hutsul, Shetland Pony, Half-bred Anglo-Arabian, Noble Half-bred, Fjord and crosses were cytogenetically investigated. Chromosome preparations obtained after lymphocyte culture were analysed using conventional Giemsa staining and CBG-banding methods. In the case of abnormalities GTG-banding as well as FISH technique were applied. In ten mares different karyotypic abnormalities were diagnosed. One mare showed chromosome chimerism (64,XX/64,XY), eight had sex chromosomal aneuploidy (one in pure line 63,X and seven in mosaic form 63,X/64,XX) and one presented autosomal aneuploidy with mosaicism (64,XX/65,XX,+31). The influence of sex chromosome abnormalities on fertility and the possible utilisation of karyotypic control in any selection programme are discussed.