Effects of dietary Kemin multi-enzyme on growth, body composition and some blood biochemical factors of Carassius auratus

Document Type : Research Paper


1 Department of Fisheries, Hamoun International Wetland Research Institute, University of Zabol, Zabol, Sistan and Baluchistan, Iran

2 Iranian Fisheries Research Organization, Shahid Motahary Coldwater Fishes Genetic and Breeding Research Center, Agricultural Research, Education and Extension Organization (AREEO), Yasouj, Kohgiluyeh and Boyer-Ahmad, Iran


Exogenous multi-enzyme supplementations can eliminate the effects of antinutritional factors and improve the growth performance of aquatic animals. The purpose of this study was to investigate utilizing Kemin multi-enzyme supplementation in the diet and its effects on growth factors, body composition, and some blood biochemical parameters in Carassius auratus gibelio. The experiment was conducted in a completely randomized experimental design with 5 treatments and 3 replications. The Kemin at 4 levels of 0, 250, 500, 750, and 1000 mg/kg was added to the diet and given the experimental diets to fishes for 8 weeks and growth factors, Weight growth percent (WGP), specific growth rate (SGR), feed conversion ratio (FCR), Condition factor (CF), Protein efficiency ratio (PER) were studied. Body composition and blood biochemical factors (glucose, total protein, albumin, cholesterol, and triglyceride) were measured and evaluated. Different treatments of CF were not significantly different from each other (P> 0.05). But WGP, SGR, FCR and PER, the enzyme levels of 500, 750, and 1000 mg/kg were significantly different from the control group (P <0.05). Body composition and blood biochemical parameters were not significantly different between enzyme levels (P> 0.05). Based on the results of this study, it seems that Kemin multi-enzyme supplementation diets can improve the growth and FCR in Carassius auratus gibelio.