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Aquaculture Nutrition
Year: 2011  |  Volume: 17  |  Issue: 6  |  Page No.: 627 - 633

Effect of amylase on growth, survival and proximate composition of the Polychaete, Perinereis cultrifera (Grube, 1840)

S. ELAYARAJA, N. ANNAMALAI, P. MURUGESAN, P. MAYAVU and T. BALASUBRAMANIAN    

Abstract: The effect of amylase on growth performance, survival rate and proximate composition of Perinereis cultrifera was investigated. The amylase produced by Bacillus sp. was added to polychaete basal diets at three concentrations such as 50, 100 and 150 mg kg−1 in experiments I, II and III, respectively. After 90 days, polychaete receiving the diets supplemented with enzymes at 150 mg kg−1 showed significantly better growth performance and survival rate than those fed the basal diet (Control). Among these experimental animals, the maximum protein, lipid, carbohydrate and ash contents were recorded in experiment III, whereas moisture content was maximum in control and minimum in experiment III. The essential fatty acids such as palmitic acid (C16:0), margaric acid (C17:0), stearic acid (C18:0) and arachidonic acid (C20:4ω-6) occurred at higher concentration in experiment group than in control. Thus, the amylase produced by Bacillus sp. significantly influenced growth, survival rate and proximate composition of P. cultrifera which has importance in aquaculture industry.

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