Growth Performance of Common Carp (Cyprinus Carpio) and Silver Carp (Hypophthalmichthys Molitrix) Cultured at High Stocking Density in In-Pond Raceway System (IPRS)

Abstract

This study evaluated the growth performance of common carp (Cyprinus carpio) and silver carp (Hypophthalmichthys molitrix) reared at high stocking density in an In-Pond Raceway System (IPRS) over a 120-day production cycle. Fish were fed a commercial floating diet formulated to meet their nutritional requirements under intensive culture conditions. Growth performance was assessed using final body weight, weight gain (WG), specific growth rate (SGR), daily growth rate (DGR), feed conversion ratio (FCR) and survival rate (SR). Water quality was monitored throughout the culture period through regular measurements of temperature, dissolved oxygen, pH and ammonia concentration. The IPRS maintained suitable water quality conditions and supported satisfactory fish growth at high stocking density. Common carp achieved better feed conversion efficiency, whereas silver carp attained greater growth and higher final biomass. Survival remained high in both species, indicating favorable culture conditions throughout the production cycle. The findings support the use of IPRS technology for intensive carp production and provide practical information for improving stocking density, feed utilization and sustainable aquaculture management.