A 6-week long feeding trial experiment was conducted to study the efficacy of Bromelain, a blend of proteolytic enzymes present in the pineapple wastes on growth performance, biochemical and haematological profiles of the fingerlings of Nile tilapia, Oreochromis niloticus. For this, two hundred and forty Nile tilapia fingerlings (9±0.11 cm) were fed with a commercial diet, supplemented with different levels of pineapple peel extract at 1:0, 1:1, 1:2 and 1:3 ratio. After 45 days of the feeding trial, growth parameters, biochemical constituents and the level of blood cells were assessed. It was found that the growth parameter such as weight gain, feed efficiency ratio and specific growth rate were increased (P0.05) without changing the white blood cell count with PPE supplementation. Thus, the pineapple peel extract can be a potential feed supplement in Nile tilapia aquaculture.
Key words: Fisheries, Supplementation, Proteases, Resistance, Waste management
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