Studies on the Growth and Production Performance Ofrohu (Labeo Rohita) at Different Stocking Densities Inintensive Aquaculture Systems Using Floating Feed

Abstract

The study was conducted to assess the growth and production of rohu (Labeo rohita) in intensive aquaculture system in relation to feed conversion ratio (FCR). To assess the weight gain, SGR and FCR, the experiment was performed in six concrete tanks under a shed located on the southern th rd corner of Faculty of Fisheries, BAU for 100 days from 26 June to 3 September, 2018. Rohu fry was released at the rate of 4 fry per tank equivalent to the stocking density of 160 fishes/decimal for treatment 1 T and at the rate of 8 fry per tank equivalent to the stocking density of 320 fishes/decimal for treatment 1 2 T . Floating feeds were used for feeding the fish in both treatments. There were three (3) replications 2 for each treatment. During experimental period, feed was given at the rate of 12%, 8%, and 4% of the body weight in first 30 days, second 30 days and final 40 days, respectively. The weight gains of fish were 42.89±1.509 g and 23.49±4.039 g for T and T respectively. The mean percent weight gain of rohu 1 2, was higher in T (588.12±0.00) than T (319.29±0.00). Feed conversion ratio (FCR) in T and T were 1 2 1 2 2.21 and 2.99, respectively. The specific growth rate (SGR) of rohu in T and T were 1.92±0.275 and 1 2 1.43±0.108, respectively. The SGR for T was higher and FCR was lower in production cycle than T . 1 2 The total production was obtained 201.56±0.00 g in T and 248.08±0.00 g in T , respectively with 100% 1 2 survival rate in both the treatments.