Effects of different tradititonal and commercial aquafeed on proximate composition and growth performance of Grass carp ( Ctenopharyngodon idella ) reared in the semi-intensive composite culture system

Abstract The objective of the research was to find the effects of numerous traditional and commercial aqua feed on proximate composition and growth performance of Grass carp ( Ctenopharyngodon idella ) reared in the semi intensive composite culture system. The aqua feeds of various companies (AMG, Supreme, Aqua, Star Floating, Hi-Pro and Punjab feed) used as commercial feed. Farm made feeds were Maize gluten and Rice polish. For confidentiality, these feeds were randomly assign code T1, T2, T3, T4, T5, T6, T7 and T8 which were only known to investigating staffs. There were two replicates for each treatment. In this research, significantly maximum growth was recorded in T3 as compared to other treatments. Lesser weight gain was observed in the T1 (270.30±60.5).The maximum body length (19.25±2.19) was found in T3. Similarly, the minimum body length (5.97±2.94) was seen in T2. FCR ratio (2.36±0.01) was recorded in T3. Simultaneously, FCR (1.86±0.002) was also recorded in T4 that is the perfect ratio for fish farmers. Higher SGR was found in T3 (1.62±0.05). Overall, T4 showed lesser SGR (1.05±0.001). T4 showed the higher Crude protein (28.66±0.24%). T3 showed more fat content level (5.46±0.33%) in the body. These outcomes also supported that enrichment in the dietary amount of protein and lipid level improve lipids content and crude protein in fish body weight. Thus, based on growth performance, survival and proximate composition, it is concluded that T3 & T4 may be recommended for commercial culture of Ctenopharyngodon idella .