Utilizing trypsin enzyme in the diet and their effects on growth, body composition, some blood biochemical factors and activity of intestinal trypsin of great sturgeon (Huso huso)

Document Type : Nutrition

Authors

1 Department of Fisheries, Faculty of Fisheries and Environment, Gorgan University of Agricultural Sciences and Natural Resources, PO Box: 487-49175

2 Institute of Fisheries Research, Agricultural Research, Education and Promotion Organization, Tehran, PO Box: 6116-14155

3 Department of Aquaculture Processing, Faculty of Fisheries and Environment, Gorgan University of Agricultural Sciences and Natural Resources, PO Box: 487-49175

4 Department of Materials Science and Design, Food Science and Technology Faculty, Gorgan University of Agricultural Sciences and Natural Resources, PO Box: 487-49175

Abstract

Exogenous proteolytic enzyme supplementations can eliminate the effects of antinutritional factors and to improve fish growth performance. The purpose of this study was to investigate the utilizing porcine trypsin in the diet and its effects on growth factors, body composition, some blood biochemical parameters and activity of intestinal trypsin in great sturgeon (Huso huso). The experiment was conducted in completely randomized design with 3 treatments and 3 replications and trypsin at 3 levels of 0, 0.01% and 0.02% was added to the diet and given the experimental diets to fishes for 45 days and growth factors, Weight growth percent (WGP), specific growth rate (SGR), feed conversion ratio (FCR), Condition factor (CF), Protein efficiency ratio (PER), Hepato-somatic index were studied. Blood biochemical factors glucose, BUN, total protein, albumin, globulin and A: G ratio 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 0.01% and 0.02 were significantly different from control group (P <0.05). HSI and activity of intestinal trypsin in enzyme levels of 0.02% was significantly different from control group (P <0.05). Body composition and blood biochemical parameters were not significantly different between enzyme levels (P> 0.05).

Keywords


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