The Effects of Stocking Density on the Growth and Survival of Nile Tilapia (Oreochromis niloticus) Fry at Son Fish Farm, Uganda
Ntanzi Ronald*, Bwanika Gladys and Eriku Gasper
Fisheries and Aquaculture, Makerere university, Uganda
- *Corresponding Author:
- Ntanzi Ronald
Fisheries and Aquaculture
Makerere university, Uganda
E-mail: [email protected]
Received Date: December 23, 2013; Accepted Date: February 16, 2014; Published Date: February 26, 2014
Citation: Ronald N, Gladys B, Gasper E (2014) The Effects of Stocking Density on the Growth and Survival of Nile Tilapia (Oreochromis niloticus) Fry at Son Fish Farm, Uganda. J Aquac Res Development 5:222. doi: 10.4172/2155-9546.1000222
Copyright: © 2014 Ronald N, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Besides affecting land usability that subsequently impacting on profitability of an aquaculture venture, stocking density is believed to affect growth rate and survival of fish species stocked. In this study, Nile tilapia fry were randomly stocked at densities 1000, 1330, 2000, 2670, 4000 and 5330 fry/m3 for an experimental period of 23 days. All fish were fed a commercial feed (45% protein) at levels of 20, 18 and 15% body weight in week one, two and three. The impact of stocking density on standard length, body weight, survival, growth homogeneity, specific growth rate and feed conversion ratios was determined on samples taken weekly for the experimental. A negative correlation between stocking density and growth rate was recorded. Survival was lowest with high stocking densities, 87% at 4000 fry/m3 and 82.9 at 5330 fry/m3.Results demonstrate that increasing the stocking density of Nile tilapia fry beyond 2670 fry/m3 significantly affects survival and growth of fry (ANOVA).