Supplementation of four non-conventional aquatic weeds to the basal diet of Catla catla and Cirrhinus mrigala fingerlings: Effect on growth, protein utilization and body composition of fish

摘要: Background. Our previous study has shown that four aquatic weeds viz. Asian watermoss, Salvinia cucullata ; water spinach Ipomoeareptans chestnut, Trapanatans and lesser duckweed ,Lemnaminor ) from northeast India are important sources of proteins, vitamins minerals, suitable for incorporation in fish diet. The aim the present was to compare efficacy these based formulated diets on growth, feed utilization nutrient turnover flesh fingerlings two species Indian major carps: catla,Catlacatla (Hamilton, 1822), mrigal,Cirrhinusmrigala (Bloch, 1795) . MaterialandMethods. were hand-sorted distributed 15 glass aquaria (each having 50 l capacity) at a stocking density 5 fishes per aquarium. Five (containing 26%–28% crude protein approximately) prepared analyzed proximate composition. fed catla mrigal triplicate treatments rate 3% body weight 60 days performance terms carcass composition evaluated. Results. whole energy content C. before end ing trials did not differ significantly ( P > 0.05), however, proportion lipid high when with diet F 2 (P < 0.05). In case ofC.mrigala, protein, as well contents, er all groups experiment compared initial fish. hepatic- muscle tissues I. reptans displayed contents vitamin E 0.01). Interestingly, although no difference glycogen level inC.mrigala observed irrespective liver inCatlacatla finger lings higher or control Conclusions. Presently reported suggests , being rich source nutrients, is forC.catla andC.mrigala fingerlings.