Effects of Substrate Material on Hatchability of Clarias gariepinus Eggs

Abstract

In this study, matured Clarias gariepinus eggs were incubated on substrate materials-Kakabarn, Mosquito net and Water lily leaf at the Toxicology unit Fish Farm of the Department of Water Resources, Aquaculture and Fisheries Technology, Federal University of Technology, (F.U.T.), Minna. Each treatment was replicated three times. Fecundity increased with body weight and hence larger fish had higher fecundity and differed significantly (p<0.05) from each other. Mean fecundity was (28722±4259). Percentage fertilization and hatching differed significantly (p<0.05) among the treatment levels. Percentage survival and mean weight gain was highest in kakabarn (74.40 %) and (0.20) respectively. Eggs incubated on water lily leaf has the highest percentage fertilization and hatching hence most effective and therefore is recommended as substrate for use to incubate eggs of Clarias gariepinus for breeding