A preliminary feeding trial was conducted to evaluate the nutritive value of adult variegated grasshopper (Zonocerus variegatus) meal (VGM) as a replacement for ¢sh meal in the diets of Clarias gariepinus ¢ngerlings. Proximate analysis result showed that VGM had 61.50% crude protein, 6.87% crude lipid, 27.33 NFE and 9.35% chitin. Five isonitrogenous (30%) and isoenergetic (18.42 MJ kg À 1 ) diets were formulated in whichVGM progressively replaced ¢shmeal at ¢ve inclusion levels (0%, 25%, 50%, 75% and 100%). The best performance in terms of % weight gain was observed in the group of ¢sh fed ED 1 (25% inclusion level) and was not signi¢cantly di¡erent (P40.05) from the groups fed the control diet.Weight gain and speci¢c growth rate were signi¢cantly lower (Po0.05) in the group fed ED 4 (100%VGM). Feed conversion ratio and protein e⁄ciency ratio were numerically but not signi¢cantly di¡erent (P40.05) among the di¡erent groups. The results indicate that apparent protein and lipid digestibility were high at all levels, although there were decreases with an increase in the inclusion levels. Carcass lipid decreased with an increase in the inclusion level of VGM. The VGM can replace ¢sh meal up to 25% in the diets of C. gariepinus ¢ngerlings without any adverse e¡ect on growth and nutrient utilization.

No abstract

No abstract

DZȱŘŝȱȱŘŖŗŘ ȱȱȱDZȱŗşȱȱŘŖŗř DZȱśȱ¢ȱŘŖŗř ȱDZȱŗŘȱ¢ȱŘŖŗř ȱ¢ȱȱȱȱȱȱȱǻȱȬ Ǽȱȱȱǻ Ǽȱȱȱ¢ ȱ£ȱȱȱȱ ȱ ȱ ȱ ǰȱ ȱ ȱ ęȱ ǻŚǯŝŜƹŖǯřŘȱ Ǽǯȱ ȱȬȱǻřśƖȱȱǼȱȱ¡¢ȱ ȬȱǻřŚŖŖȱ ȱȦǼȱȱ ȱ¢ ȱ£ȱ ȱ ȱ¢ȱ ȱŖƖȱǻ ŖȦ ȱǼǰȱŘśƖȱǻ ŘśǼǰȱśŖƖȱ ǻ śŖǼǰȱ ŝśƖȱ ǻ ŝśǼȱ ȱ ŗŖŖƖȱ ǻ ŗŖŖǼȱ ȱ ȱ Ȭ ǯȱ ȱ ęȱ ȱ ȱ ȱ ȱ ȱ ȱ śƖȱ ¢ȱ ȱ ȱ ŞŚȱ ¢ǯȱ ȱ ȱȱǻŘǯřŘƖǼȱȱȱȬȬ ȱ ȱ ¢£ȱ ȱ ǰȱ ȱ ¡ȱ ǻŖǯŞŚƖǼȱ ȱ ǯȱ ȱ ȱ ȱ ǻŞǯşŗȱ ȦǼȱ ȱ ȱ ǰȱ ȱ ȱ ȱ ȱǻŖǯŖŗȱȦǼǯȱȱǰȱęȱ ȱȱ ȱȱȱȱ ȱȱǻǁŖǯŖśǼȱȱęȱȱȱ Ŗȱȱ śŖǯȱȱęȱȱȱ Ŗȱȱȱȱȱ Ĝ¢ȱȱǻŗǯŞŞǼǯȱȱ¢ȱȱǻ|ŖǯŖśǼȱȱ ¢ȱ ȱǰȱ ȱ¢ȱ¢ȱȱȱ ȱǯȱȱȱ ȱȱ ȱȱȬ ȱ¢ ȱ£ȱȱśŖƖȱȱ ȱěȱ ǰȱȬ ȱ£ȱȱȱȱ¢ȱȱȱȱȱ ȱęǯ ¢ DZȱ ȱ ȱ¢ ȱ Ȭȱ

No abstract