VGO 511: Veterinary Andrology and Reproductive Techniques (1+1)

DAG DEFECT

Upto 80 percent of the spermatozoa will have strongly coiled, folded or disrupted or split tails.

• The fibres of the axial filament were normal in the testis but abnormal when the cells reached the cauda epididymis.
• The defect is hereditary and recovery has not been reported.
• Fertility is lowered/sterile.
• Confirmative diagnosis is made by electron microscopy.
• This defect is recorded in Danish Jersey bulls