Changes in growth performances, survival rate and water quality parameter of pond on different stocking density of Gulsha Tengra (Mystus cavasius) in a monoculture system

Abstract

This study highlighted the effect of different stocking density of Gulsha Tengra (Mystus cavasius) on its growth performance, survival as well as water quality parameters of the pond in a 4 months trial in a monoculture system. Changes in water quality and growth performance were analyzed considering three different stocking density such as 400 ind./decimal (T1); 500 ind./decimal (T2) and 600 ind./decimal (T3) with two replication of each using Complete Randomization Design (CRD). Water quality parameters were viz. temperature, dissolve oxygen (DO), pH and transparency were measured fortnightly during the study period. Results showed significant differences (P>0.05) between treatments. Temperature was relatively high with an apparent opposite trends of DO in T3 treatment. Moreover, it was observed that the highest length and weight was found in T1 treatment. In addition, better growth rate with maximum survivability was recorded in low stocking density. It might be concluded that comparatively lower stocking density of Gulsha Tengra could provide more production and also be suitable in order to maintain better water quality parameters in enclosed culture condition.