Preliminary evaluation of the nutritive value of the variegated grasshopper (Zonocerus variegatus L.) for African catfish Clarias gariepinus (Burchell. 1822) fingerlings
作者： Wilfred O Alegbeleye , Sam O Obasa , Olugbenga O Olude , Kehinde Otubu , Wahab Jimoh
DOI: 10.1111/J.1365-2109.2011.02844.X
关键词: Animal science 、 Clarias gariepinus 、 Fish meal 、 Aquaculture 、 Weight gain 、 Meal 、 Catfish 、 Nutrition physiology 、 Fishery 、 Biology 、 Feed conversion ratio
摘要: A preliminary feeding trial was conducted to evaluate the nutritive value of adult variegated grasshopper (Zonocerus variegatus) meal (VGM) as a replacement for fish in diets Clarias gariepinus fingerlings. Proximate analysis result showed that VGM had 61.50% crude protein, 6.87% lipid, 27.33 NFE and 9.35% chitin. Five isonitrogenous (30%) isoenergetic (18.42 MJ kg−1) were formulated which progressively replaced fishmeal at five inclusion levels (0%, 25%, 50%, 75% 100%). The best performance terms % weight gain observed group fed ED1 (25% level) not significantly different (P>0.05) from groups control diet. Weight specific growth rate lower (P 0.05) among groups. results indicate apparent protein lipid digestibility high all levels, although there decreases with an increase levels. Carcass decreased level VGM. can replace up 25% C. fingerlings without any adverse effect on nutrient utilization.
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