Gonadal and extragonadal sperm reserves of the domesticated adult African greater cane rat (Thryonomys swinderianus).

Gonadal and extragonadal sperm reserves were determined in twenty sexually matured domesticated African greater cane rats. Mean (+/-SD) sperm numbers in testes and epididymides were 150.40+/-12.93x10(9) and 259.33+/-13.68x10(9), respectively. The mean epididymal distribution of spermatozoa was found as follows: 67.53+/-12.43x10(9) in caput, 89.10+/-13.20x10(9) in corpus, and 102.70 +/-13.71x10(9) in cauda. This study provides baseline data essential for effective selection of male cane rats for breeding purposes.