Evaluation of growth performance of amur common carp (Cyprinus carpio) and mrigal (Cirrhinus mrigala) with major carps in polyculture system

Abstract

The present experiment was conducted in rectangular cemented tanks (5 x 4 x 1m) each for five months to evaluate growth performance of amur common carp (Cyprinus carpio) and mrigal (Cirrhinus mrigala) with major carp in polyculture system. The experiment included three treatments in triplicates viz. T1: mrigal, catla (Catla catla), rohu (Labeo rohita), silver carp (Hypophthalmichthys molitrix) and silver barb (Puntius gonionotus) at 6:3:6:2:3; T2: amur common carp, catla, rohu, silver carp and silver barb at 6:3:6:2:3; and T3: mrigal, amur common carp, catla, rohu, silver carp and silver barb at 3:3:3:6:2:3. Results showed that mean weight gain and specific growth rate of mrigal and amur common carp were higher in T3 compared to T1 and T2 and that of silver carp was significantly (P