Effect of Stocking Density and Feed on Growth of Improved (F5) Mono- Sex Oreochromis Shiranus Reared in Tanks
- *Corresponding Author:
- Sanudi F
Department of Fisheries,Mzuzu
University, Luwinga, Mzuzu, Malawi
Tel: +265 (0)1 320 722/575
E-mail: [email protected]
Received Date: October 17, 2015; Accepted Date: November 19, 2015; Published Date: December 02, 2015
Citation: Sanudi F, Jere B, Mzengereza K, Chirwa BB (2015) Effect of Stocking Density and Feed on Growth of Improved (F5) Mono-Sex Oreochromis Shiranus Reared in Tanks. J Fisheries Livest Prod 3:148. doi:10.4172/2332-2608.1000148
Copyright: © 2015 Sanudi F, 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.
A study was undertaken to determine the effects of stocking density and type of feed on growth of mono-sex culture of improved strain of Oreochromis shiranus reared in tanks. The fish stocked at 3 fish/m2 and 5 fish/m2 replicated three times were randomly assigned to Malawi Gold Standard (MGS) and maize bran (MB) diets. The fish were cultured for 42 days. Results showed that the mean weight gain and gain in standard length were inversely proportional with stocking density. Treatments fed MGS and a stocking density of 3 fish/m2 had higher mean body weight gain (4.37 ± 0.284 g) and standard length gain (3.07 ± 0.111 cm) compared to 2.60 g and (2.25 ± 0.120 cm) for weigh gain and gain in length for treatments fed MB at 5 fish/m2 respectively. There were significant differences (P<0.001) between treatments fed MGS and MB in terms of mean weight gain and standard body length. The study also determined the rate of survival in the different treatments. The highest survival rate was in MGS and 3 fish/m2 (94.7%) while the least was in MB and 5 fish/m2 (87.1%). This study shows that stocking density and feed affect growth of mono-sex culture of improved strains of O. shiranus reared in tanks. MGS and stocking density of 3 fish/m2 gave the best results. However, for resource limited farmers a recommendation of 3 fish/m2 and MB can be made to achieve 2.59 cm gain in length and 2.78 g gain in weight instead.