CHROMOSOMAL STUDIES ON A BULL WITH A CONGENITALLY ABNORMAL URETHRA

Abstract

A six-year old bull (Bos indicus) was found to have hypospadia (congenital rupture of the ventral aspect of the penile urethra). The testes were a normal size and the penis slightly hypoplastic. Karyotype obtained from the conventional staining of chromosomes and GTG- and RBA- bandings revealed a normal make-up, of 60 XY male chromosomes. The levels of serum testoterone, estradiol and progesterone were all within the normal range. Based on the phenotypic abnormality and the karyotypic findings, this bull can be classified as a male, pseudohermaphrodite.