Abstract
A malformed Ayrshire heifer had one additional autosome in all the lymphocyte metaphases studied. Chromosome banding techniques showed the karyotype of the calf to be 2n = 61, XX, +24.
Slight prognathia of the lower jaw and peculiar abbrevations in the structure of the genitals were the most apparent anomalies, in addition to heart abnormalities, a poorly-closed urachus and slow growth rate.
Keywords: autosomal trisomy, congenital malformations, chromosome banding analysis.
Sammanfattning
Hos en Ayrshire-kviga med långsam tillväxt och plötslig död i en ålder av 1 år kunde en extra autosomal kromosom påvisas i alla lymfocyter. Bandfärgning av kromosomerna visade karyotypen vara 2n = 61, XX, +24.
Kvigan hade en lindrig prognathia inferior, ett litet navelbrock samt utvecklingsstörningar i urogenitalsystemet och defekter i hjärtat.
Full Text
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Acknowledgements
We are grateful to veterinarian Eero Remes for his kind cooperation in referring the calf of the present study. We would also like to thank Tarja Väisänen for her excellent laboratory assistance, Dr. Henni Höhn for her interest in this study and Drs. Ingemar Gustavsson and Dino di Berardino for their comments on the karyotype.
References
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