Open AccessUse of full‐fat winged bean Psophocarpus tetragonolobus seed meal as a protein feedstuff in fish‐meal free diets for African catfish Clarias gariepinus
Author(s) -
Fagbenro
Publication year - 1999
Publication title -
aquaculture nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.941
H-Index - 79
eISSN - 1365-2095
pISSN - 1353-5773
DOI - 10.1046/j.1365-2095.1999.00109.x
Subject(s) - catfish , clarias gariepinus , biology , menhaden , fish meal , meal , methionine , food science , feed conversion ratio , protein efficiency ratio , zoology , biochemistry , fish <actinopterygii> , fishery , body weight , amino acid , endocrinology
Mature winged bean Psophocarpus tetragonolobus seeds were quick‐cooked and the full‐fat meal derived was used to completely replace menhaden fish meal as a dietary protein source for the African catfish Clarias gariepinus . Five dry practical diets (400 g crude protein kg −1 and 17.5 kJ gross energy g −1 dry diet) containing menhaden fish meal (diet 1) or winged bean meal with or without graded levels of supplemental L ‐methionine (diets 2, 3, 4 and 5; 0, 5, 10 and 15 g kg −1 , respectively) were fed to catfish fingerlings (5.8 + 1.2 g) for 70 days. Weight gain, growth rate, feed conversion and protein utilization by catfish fed a winged bean meal diet without L ‐methionine supplementation (diet 2) was inferior ( P > 0.05) to that in catfish fed the other diets, where performance differed nonsignificantly. Carcass protein of catfish was lower ( P < 0.05) while liver protein was higher ( P < 0.05) in catfish fed the winged bean meal diet without methionine supplementation. Results suggest that winged bean meal cannot replace fish meal as a protein source in catfish diets except with a minimum supplementation with 5 g L ‐methionine kg −1 diet.