A study on growth performance of Nile tilapia (Oreochromis niloticus) by substituting fish meal with soybean meal in diet
Mst. Arzu Pervin, Halima Jahan, Rabeya Akter, Noore Safa Ema, Zakir Hossain.
Abstract
Replacement of fish meal with soybean meal is an effective way to relieve the pressure on fish meal as the supply of this feed ingredient is dwindling and certainly is not sustainable in long term at present levels in commercial feeds. This study was conducted to assess the growth performance (length, weight, specific growth rate) of Nile tilapia (Oreochromis niloticus) by replacing the percentage of fish meal with soybean meal in formulated diets. Nile tilapia (O. niloticus) fry were collected from Bangladesh Fisheries Research Institute, Mymensingh and treated with five formulated diets D1, D2, D3, D4, D5 respectively containing 0%, 25%, 50%, 75% and 100% soybean meal as a replacement of fish meal. Forty O. niloticus having an initial weight of 6.60±0.13 g and initial length of 5.42±0.17 cm were fed these diets twice a day for 6 months. For growth analysis, length and weight of the fish were recorded at 30 days interval for 6 months. Significantly higher (P
Key words: Growth performance, soybean meal, length, weight gain
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