Clinical and cytogenetic studies in intersex ewes
2006
Nine Sarda x Lacaune ewes with intersexual characteristics and an infertility condition at the reproductive
anamnesis were analysed. In order to make a diagnosis, we have evaluated their behaviour and performed clinical
and laparoscopic examination of the reproductive tract, as well as cytogenetic analysis. The ewes showed basically
a female phenotype but a clinical examination revealed a different degree of masculinization in the morphology of
external genital organs. A shorter vagina was observed in female-like ewes and a hypertrophic clitoris in male-like
ewes. Laparoscopic analysis evidenced the presence of testis in seven individuals and, for two of them, the gonadal
position was subcutaneous. Different male characteristics in the nine subjects, were also observed in their behaviour
with a different degree of masculinization. Their blood samples were used for determining the percentage of male
cells on lymphocytes chromosome spreads by using the C-banding technique. The haematopoietic chimeras (XX/
XY) found in the lymphocytes confirmed the diagnosis of freemartinism for seven out of the nine subjects.
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