REPRODUCTIVE INDICES OF TWO STRAINS OF Clarias gariepinus: FROM CAMEROON AND NIGERIA

Ndeham V.  R; Apollos T. G

Authors

Ndeham V. R
Apollos T. G

Abstract

Evaluation of reproductive characters between of Clarias gariepinus from Cameroon and Nigeria was
carried at the Department of Fisheries and Aquaculture Teaching and Research farm Adamawa State
University, Mubi Nigeria, to determine the fecundity, milt volume, sperm motility, percentage
fertilization and hatchability from four experimental crosses. Water parameters such as PH, temperature
and dissolved oxygen were monitor and found to be at optimal level for catfish culture. The results
showed that purebred from Cameroon had better fecundity (242,433 eggs) than Nigeria (219,204
eggs). There was a significant difference (p<0.05) in the weight of right and left lobes of testes and in
the length of the right and left lobes of the broodstock from the different strains. FNIG x MNIG had the
highest percentage fertility (99.63%) followed by FCM x FNIG (99.54%), FCM x MCM (99 53%) and
the least in FNIG x MCM (99.50%). FNIG x MNIG had the highest percentage hatchability (87.523%)
followed by FCM x FNIG (80.00%), FNIG x MCM (75.86%) and the least was FCM x MCM (75.12%).
There was a significant difference (p <0.05%) in the fertility and hatchability between purebreds and
hybrids
Key words: Strain, Fertilization, Hatchability, Milt and fecundity Clarias gariepinus