Growth and yield of monosex tilapia Oreochromis niloticus in floating cages fed commercial diet supplemented with probiotics in freshwater pond, Sylhet

摘要

The effect of probiotics mixed with floating feed on the growth and production of tilapia Oreochromis niloticus over a period of 120 days was evaluated. Four treatments were T 1 (super biotic probiotics), T 2 (biozyme probiotics), T 3 (zymetin probiotics) and T 4 (control) with three replicates. Higher growth of tilapia was found in T 3 (272.78 g) followed by T 2 (242.56 g), T 1 (222.76 g) and T 4 (199.35 g). The highest gross yield (8.82 kg m -3 ) was achieved in T 3 compared to T 2 (7.78 kg m -3 ), T 1 (7.23 kg m -3 ) and T 4 (6.35 kg m -3 ), which is manifolds higher than the earthen pond yield of tilapia in Bangladesh. The highest net profit (TK. 401.0 m -3 ) was obtained in T 3 and the lowest (TK. 119.0 m -3 ) was in control (T 4 ). Results suggest that probiotics can be used in feed to increase fish production. Bangladesh J. Zool. 45 (1): 27-36, 2017