13. Growth variation of tilapia (Oreochromis niloticus) with variation of environmental parameters

Abstract

With a view to assess the growth variation of mono-sex Tilapia (Oreochromis niloticus) an experiment was carried out from 5 May 2016 to 4th December 2016 in two different environmental conditions. Two locations were one in Mymensingh –Bhaluka and the other in Tangail - Modhupur. At each location, there were seven ponds of almost similar size (30 decimal) and water depth (1.5 m). The stocking density was 200 fry per decimal for each location. Pre-stocking and post-stocking management were similar in both locations. There were considerable variations in most of the water and soil qualities between two locations. After six months of rearing, significantly higher (p<0.05) mean harvesting weight of Oreochromis niloticus (500 ± 50g) was observed in Mymensingh, as compared to that of Tangail (350 ± 30 g).