Unbalanced autosomal translocation identification of unbalanced 1; 9 autosomal translocation in a gir (bos indicus) bull calf

A blood sample was collected from a phenotypically normal Gir (Bos indicus) bull calf for routine chromosomal screening. Cytogenetic investigation by GTG banding revealed unbalanced autosome translocation involving chromosomes number one and nine (1q4.4;9q2.2) in all the metaphase fields. This is the first case of unbalanced translocation in Indian origin Bos indicus cattle. It has no visible effect on body confirmation but it is generally associated with a reduction in fertility. In present case, no fertility records were available as bull calf was not in production.