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An investigation on the effects of different diets on the growth performance of Nile tilapia, Oreochromis niloticus (Linné, 1758)
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M. Djeziri *1   , L. Nouri2 , M. Kacher3 |
1- Research Laboratory in Food Technology, Faculty of Engineering Sciences, University M’hamed Bougara of Boumerdes 35000, Algeria , mourad_djeziri@yahoo.fr
2- Research Laboratory in Food Technology, Faculty of Engineering Sciences, University M’hamed Bougara of Boumerdes 35000, Algeria
3- National Centre of Research and Development of Fisheries and Aquaculture (CNRDPA), Bouismail, Tipaza. Algeria. |
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Abstract: (3328 Views) |
The objective of this study is to investigate the possibility of substituting a diet
based on fish meal, for Nile tilapia fish fry (Oreochromis niloticus), by another food based agro-industrial by-products. Four plants and animal by-products were selected for the formulation of this diet, namely feathers Poultry flour (FPF), date stones flour (DSF), peas flour (PF) and tomato waste flour (TF). The four above-mentioned by-products were combined to obtain four experimental diets (D1-D4) containing isoproteic (29- 39% crude protein) and iso-energetic (15-21 kJ gross energy by g feed), so as to replace completely, fish meal. The fifth diet, based on fish meal was used as control died (CD). The results of livestock and biochemical analyses, such as the specific growth rate (SGR), feed conversion efficiency (FCE), the protein efficiency ratio (PER) and the apparent protein retention (APR) show that D3 and D4 give better results compared to the control diet (CD). The least interesting results were obtained with experimental D1 diet. Finally, for all analytical results obtained, it was highlighted that the diet D4 is relatively more efficient nutritionally, compared to the other diets formulated, which gives a better weight gain. |
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| Keywords: Oreochromis niloticus, Pre-fattening, Nutrition, Agro-industrial products meal, Zootechnic parametrers. |
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Full-Text [PDF 416 kb]
(1634 Downloads)
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Type of Study: Orginal research papers |
Subject:
aquaculture
ePublished: 2020/01/19
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