Chromosome anomalies and infertility in the mare.
Nine reproductively normal mares, 25 infertile mares and one set of heterosexual twins were examined cytogenetically using conventional giemsa staining, C-banding and G-banding. It was concluded that G-banding was necessary to identify even gross anomalies. Three (12 per cent) of the infertile mares, but none of the controls, had a chromosomal anomaly. One was 63,XO, one a 63,XO/64,XX mixoploid and one a 64,XY sex reversed male. It is argued that a cytogenetic examination is a useful diagnostic technique but that routine screening of the whole population would be uneconomic.
Long
S E
SE
Department of Animal Husbandry, University of Bristol, Langford.
D000818:Animals; D001399:Azure Stains; D002871:Chromosome Banding / Q000662:veterinary; D005260:Female; D006734:Horse Diseases / Q000235:genetics*; D006736:Horses; D007247:Infertility, Female / Q000235:genetics / Q000662:veterinary*; D007621:Karyotyping / Q000662:veterinary; D008677:Metaphase; D012729:Sex Chromosome Aberrations / Q000662:veterinary; D014960:X Chromosome
D001399:Azure Stains