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Keywords: milkfish, Chanos chanos , feed, nutrition, growth, protein A study was conducted to find a suitable diet and feeding level for the culture of milkfish ( Chanos chanos ) in Zanzibar. Two growth trials and one digestibility trial were done. The first growth trial was conducted using 25, 32 and 40% protein diets to determine the optimal level that could be used for the second growth trial on feeding levels. There were no significant differences on feed intake and growth performance of milkfish among the treatments (P 2 = 0.79) between digestible energy fed and energy gain, digestible protein fed and protein gain among protein and feeding levels. Protein and energy efficiency were 0.37 and 0.27 respectively. Results of growth, protein and energy efficiency and utilisation indicate that the suitable level of milkfish feeding was 4% of body weight per day when a 32% protein level was used. Western Indian Ocean Journal of Marine Sciences Vol.2(2) 2003: 137-146

Nutritional Studies and Development of a Practical Feed for Milkfish ( <i>Chanos chanos</i>) Culture in Zanzibar, Tanzania