Comparative Study of the Growth and Gonad Development of Clarias gariepinus （Burchell 1822） Fed Diets with Plant and Animal-based Ingredients in Concrete Tanks
Comparative Study of the Growth and Gonad Development of Clarias gariepinus （Burchell 1822） Fed Diets with Plant and Animal-based Ingredients in Concrete Tanks作者机构：Institute of Oceanography University of Calabar PMB 111 5 Calabar Nigeria Department of Zoology and Environmental Biology University of Calabar PMB 1115 Calabar Nigeria
出 版 物：《Journal of Agricultural Science and Technology(A)》 (农业科学与技术（A）)
年 卷 期：2012年第2卷第10期
页 面：1203-1210页
学科分类：0710[理学-生物学] 081702[工学-化学工艺] 07[理学] 08[工学] 0817[工学-化学工程与技术] 071002[理学-动物学]
主 题：Plant-based animal-based diets growth gonad development Clarias gariepinus.
摘 要：A twelve week experiment was conducted to compare the effects of diets with plant-based and animal-based ingredients on growth and gonad development of Clarias gariepinus. One hundred and 12 sub-adult C. gariepinus with an average weight of 205 ×5.09 g, were stocked in six concrete tanks （9 × 4 × 2 m3） containing 20 fish each. Experiment had 3 replicates and animals fed daily at 5% body weights. There was no significant difference （P 〈 0.05） in proximate compositions of the two experimental feeds and controls. Fecundity, gonad weight and gonasomatic index were higher in fish fed diet 13 than A and C. Similarly, growth indices were higher in fish fed diet B than in A and C. Histology of gonads showed a faster development of oocytes of eggs in fish fed animal-based ingredients than plant-based and combined plant and animal diets. Although there were slight differences in growth parameters and gonad development in favor of feed with animal-based ingredients, plant-based feed compared favorably in the growth and gonad development of C. gariepinus. Plant-based ingredients are recommended on the basis of affordability and availability as substitute for animal-based ingredients in C. gariepinus feed.
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