Effect of probiotics bacteria rate different (0; 2; 4 and 6g/1 kg of feed) on Growth and Resistance in Nile tilapia (Oreochromis niloticus)

Abstract

Effect of using probiotic bacteria with the concentration of 0, 2, 4 and 6 grams per 1 kilogram of commercial fish food on Nile tilapia (Oreochromis niloticus) culture in cage was conducted to examine probiotics appropriate rate on growth rate and survival rate of Nile Tilapia. Nile tilapia with initial weight of 24.07-25.03 g/fish and length initial 10.97-11.67 cm/fish was cultured in cage. Feed was used for feeding Nile tilapia for 90 days. They were laid out in completely randomized design (RCD) with 3 replications.
The results showed that the concentration of 2 g/kg was the best treatment growth rate survival rate and feed conversion ratio (FCR) final weight 180.76 g/fish increasing weight gain of 155.73 g/fish average daily gain (ADG) 2.19 g/fish survival rate 98.44% and feed conversion ratio (FCR) 1.77 which was significantly different (P<0.01) the less treatment growth rate survival rate and feed conversion ratio (FCR) of Nile Tilapia was a controlled treatment.