Spermatozoa output, testicular sperm reserve and epididymal storage capacity of the Red Sokoto goats indigenous to northern Nigeria.

Fifteen Red Sokoto goats (bucks) aged 2 to 2 1 2 years with a mean body weight of 17.80+/-1.24 kg were used for studying daily spermatozea output, testicular and epididymal sperm reserves. Semen ejaculates were obtained from each buck and evaluated daily for six weeks. Semen characteristics were as follows: volume, 0.72+/-0.91ml; colour, milky/creamy; sperm concentration/ml, 0.61+/-0.05 x 10(9); mass motility, 3.80+/-0.33; individual metility, 77.50+/-5.60; and normal sperm morphology, 80.00+/-10.50. Mean scretal circumference was 21.80+/-0.29. Mean testicular and spididymal (capita, corpora and caudas) weights (gm) were 83.74+/-5.33, 7.27+/-0.63, 2.22+/-0.23 and 6.13+/-0.73 respectively. Corresponding sperm reserves were 44.32+/-5.79, 8.82+/-1.95, 4.99+/-0.86 and 45.64+/-7.87 x 10(9). Scrotal circumference was positively correlated to testicular weight (r = 0.86), testicular spermatids (r = 0.77), and caudas spermatozoa (r = 0.83).