English

G Bob-Manuel Fayeofori

doi:10.5897/ajar10.856

Abstract

An investigation was carried out to compare the effect of feeding yeast single cell protein (SCP) on the growth and feed utilization parameters of Clarias gariepinus and Oreochromis niloticus cultured separately. The parameters investigated include the percentage weight gain (PWG); feed conversion ratio (FCR); specific growth rate (SGR); and condition factor (CF). The findings indicate that for C. gariepinus fingerlings optimum growth and nutrient utilization was obtained with 30% SCP substitution of fishmeal while for O. niloticus fingerlings 50% substitution level gave optimum growth and feed utilization. Fishmeal could therefore be replaced with yeast SCP at these levels to cut down on cost of aquafeeds for sustainable aquaculture development of these species.   Key words: Yeast single cell protein (SCP), growth, nutrient utilization, catfish, tilapia.

Highlights

One of the constraints to the successful practice of fish culture in many developing countries like Nigeria is lack of nutritionally adequate and low cost feeds
Since tilapia (O. niloticus) and the catfish (C. gariepinus) are the most popular cultivable fish in Nigeria, the use of single cell protein (SCP) in their diet will go a long way in enhancing growth and maximization of profit in aquaculture ventures
Niloticus and C. gariepinus are presented in form of bar graphs (Figures 1 to 4)

Summary

Introduction

One of the constraints to the successful practice of fish culture in many developing countries like Nigeria is lack of nutritionally adequate and low cost feeds. According to Tacon and Jackson (1985), SCP is being developed as a veritable alternative to fish meal as protein source in fish feed. Since tilapia (O. niloticus) and the catfish (C. gariepinus) are the most popular cultivable fish in Nigeria, the use of SCP in their diet will go a long way in enhancing growth and maximization of profit in aquaculture ventures.

Results

Conclusion