Effect of different feeding levels on the production of Heterobranchus bidorsalis in outdoor concrete tanks

Dada, A.A. and Fagbenro, O.A. and Ita, E.O. (2001) Effect of different feeding levels on the production of Heterobranchus bidorsalis in outdoor concrete tanks. In: 14th Annual Conference of the Fisheries Society of Nigeria (FISON) , 19-23 January 1998 , Ibadan, Nigeria.

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Abstract

Fry of Heterobranchus bidorsalis (mean weight, 0.03g) were fed at 10, 20, 30, 40 or 50% of their body weight (bw)/day in outdoor concrete tanks in New Bussa, Nigeria. The fry attained the highest average weight of 6.66g in 10 weeks when fed at 40% bw/day. Feed conversion ratio ranged from 2.13 to 9.65, the protein efficiency ratio from 1.33 to 5.93. Results indicated that H. bidorsalis are efficient feed converters. Feed intake was significantly different (p<0.05) between the treatments, specific growth rate (SGR), daily growth rate (DGR), production and average weight gain indicated that 40% of fish biomass was the optimum feeding level

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