Estimation of daily sperm production rate (DSPR) by quantitative testicular histology in Buffalo-bulls (Bubalus bubalis).
Testes and epididymides from six sexually rested buffalo-bulls were removed during breeding season. The average weight of the testicular parenchyma was 138.62 g, of which the tunica albuginea accounted for 8.45 g. Relative distribution of spermatozoa in caput, corpus, and cauda epididymides averaged 5.42, 0.75, and 11.45 billion, respectively. Total epididymal sperm reserve per bull was 36.2 billion. The efficiency of sperm production was quite uniform and averaged 14.5 x 10(6) sperm per gram of testicular parenchyma per day with a mean of 2.02 x 10(9) sperm per testis. Thus a typical buffalo-bull produces about 4 x 10(9) sperm daily during breeding season.
D000818:Animals; D002417:Cattle; D004822:Epididymis / Q000502:physiology; D008297:Male; D013091:Spermatogenesis; D013094:Spermatozoa / Q000502:physiology*; D013737:Testis / Q000502:physiology*