Asian Fisheries Society

Detoxification of Licensed and Sesame Meal and Evaluation of Their Nutritive Value in the Diet of Common Carp (Cyprinus carpio L.)

Abstract:

The effect of two processing methods, aqueous extraction and autoclaving (120ºC, 1 kg•cm-2, 2 hours) for detoxifying linseed (Linum usitatissimum) and sesame meals (Sesamum indicum) on their nutritive value as a protein source for common carp was evaluated. Growth and feed utilization of carp feed diets with 25% of the total protein replaced by linseed or sesame seeds, which are either untreated, heat treated or aqueous extracted, were compared to a control diet with fishmeal as the sole protein source. The seven diets were made isonitrogenous (40% protein) and isocaloric (4.4 Kcal •g-1) and were fed to carp initially weighing 3.3 g in three replicate tanks. Both methods of processing did not alter significantly the proximate and amino acid composition of the meals. Phytic acid contents were reduced by 48.2-71.8% and 50.8-74.0% in linseed and sesame meals, respectively with heat treatment resulting in greater reduction. Hydrocyanic acid content in linseed meal was reduced by 34.4-53.1%, with aqueous treatment resulting in the greater reduction. The results of the feeding trial showed that use of detoxified meals in diets significantly (P < 0.05) improved growth performance and food utilization of carp compared to those fed untreated meals but not to a level of performance obtained with a fish meal based control diet.

Publication Date : 1990-06-01

Volume : 3

Issue : 2

Page : 169-183

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Date 1990/06/01
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