2015•Unpublished venueRequires access
EFFECT OF STOCKING DENSITY ON GROWTH AND SURVIVAL OF HORMONE TREATED TILAPIA (OREOCHROMIS NILOTICUS) FRY REARED IN HAPAS-IN-POND SYSTEM
Nazneen Bagum, Mohammad Showkat Hossain, Mohammad Ashaf‐Ud‐Doulah, Anuradha Bhadra, Muhammad Badrul, Alam Shaheen, Bangladesh Fisheries
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Abstract
An experiment was performed in hapas-in-pond to evaluate the effect of stocking density on the growth performances and survivability of monosex male Tilapia (Oreochromis niloticus) fry for a period of 28 days. Fry were collected, weighed and stocked inside a 1 m 2 hapa in a 0.24 ha pond with stocking densities of 1200 fry/hapa (T1), 1700 fry/hapa (T1) and 2200 fry/hapa(T3). Each stocking were made in triplicate. They were fed with a 32% crude protein plus hormone (17 α-methyl testosterone) mixed feed 5 times a day. The physico-chemical parameters were recorded and found to be within suitable range for fish culture. The growth performances and survival of Tilapia (O. niloticus) fry were significantly (P<0.01) higher in T1 than those obtained from T2 and T3, respectively. The FCR (feed conversion rate) were calculated lowest (1.56) in T1 compared to T2 and T3, respectively. However, these results indicate that stocking density had a significant effect on growth performances and survival rates of monosex Tilapia (O. niloticus) fry.