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XY gonadal dysgenesis in a heifer
The Veterinary Record
|October 4, 1980
Summary
A six-year-old Haryana heifer with a 60 XY karyotype exhibited absent external genitalia and hypoplastic ovaries. This case highlights a rare intersex condition in cattle, impacting reproductive function.
Area of Science:
- Veterinary Anatomy
- Reproductive Biology
- Genetics
Background:
- An intersex condition in a six-year-old Haryana heifer presented with a failure to exhibit oestrus.
- The heifer possessed a 60 XY karyotype, indicating a chromosomal male sex determination.
Observation:
- Absence of external genital organs was noted.
- A singular urogenital opening was present at the ventral perineal border.
- The ovaries were severely underdeveloped (hypoplastic).
Findings:
- A uterus didelphys (double uterus) was observed, opening into a single cervix.
- No male sex organs or their rudimentary structures were identified.
- Histological examination confirmed the anatomical features of the genital tract.
Implications:
- This case provides insights into the complex anatomical and histological manifestations of intersex conditions in cattle.
- Understanding such conditions is crucial for accurate diagnosis and management in veterinary reproductive medicine.
- Further research into the genetic and developmental pathways of bovine intersexuality is warranted.