Fish protein hydrolysate in larval diet can augment the survival rate, growth performance, and enzyme activities of indian walking catfish, Clarias magur larvae Kumar Sikendra*, Jahageerdar S.1, Shamna N., Chanu Thongam Ibemcha2 Fish Nutrition, Biochemistry and Physiology DivisionICAR-Central Institute of Fisheries Education, Mumbai-400061, India 1Fish Genetics and Biotechnology, ICAR-Central Institute of Fisheries Education, Mumbai-400061, India 2Division of Aquaculture, ICAR-Central Institute of Fisheries Education, Mumbai-400061, India *Corresponding author: sikendra@cife.edu.in
Online Published on 28 November, 2022. Abstract Kumar, S., Jahageerdar, S., Shamna, N. and Chanu, T.I. 2022. Fish protein hydrolysate in larval diet can augment the survival rate, growth performance, and enzyme activities of Indian walking Catfish, Clarias magur Larvae. Animal Nutrition and Feed Technology, 22: 525–541. A 45 days feeding trial was conducted to observe the effects of different levels of dietary fish protein hydrolysate (FPH) on growth, survival and selected enzyme activities of thirty days post hatch Clarias magur larave. A total of 180 advanced thirty days post hatch (DPH) larvae (0.16+0.02 g) were randomly distributed in four treatments including control in triplicate. Four isonitrogenous (40% crude protein) and isocaloric (359 kcal/100g) diets prepared with different percentage of FPH viz., 5, 10 and 15% by replacing 13, 26 and 40% fish meal respectively. The treatments were designated as C (0% FPH), Tj (5% FPH), T2 (10% FPH) and T3 (15% FPH). Significantly (P<0.05) higher weight gain (%) and specific growth rate (SGR) were found in T1 group fed with 5% FPH diet followed by T2 while lowest feed conversion ratio (FCR) was recorded in Tj. Length gain of larvae showed non-significant (P>0.05) difference among treatments and T3 group reported highest length gain. Survival% recorded highest in group fed with 5% FPH. Proximate composition of whole body of larvae exhibited non-significant (P>0.05) difference effect among the treatment groups. Significantly (P<0.05) higher protease and amylase activities were found in T1 group. Aspartate transaminase (AST) and alanine aminotransferase (ALT) activities were recorded significantly (P<0.05) lowest in T1 group fed with 5% FPH. Similarly, lactate dehydrogenase (LDH) and malate dehydrogenase (MDH) were significantly (P<0.05) lowest in T1. The superoxide dismutase (SOD) and catalase were recorded significantly (P<0.05) highest in T1 followed by T2 The overall findings suggested that dietary addition of 5% FPH found effective in enhancing survival by replacing 13% fish meal growth performance of C. magur advanced larvae. Top Keywords Fish protein hydrolysate, Growth, Larvae, Magur, Nutrition. Top |