Effect of peptide-containing microcapsules as absorbent feeding on two species of Pterophyllum Scalare and Symphysodon Aequifasciatus

Document Type : Animal science

Authors

1 Department of fisheries, Faculty of marine science and technology, North Tehran branch, Islamic Azad university, Tehran, Iran

2 Department of Food Science and Engineering, North Tehran branch, Islamic Azad University, Tehran, Iran

Abstract

One of the main aspects of fish rearing is nutrition goals. In this regard,use of protein hydrolyse as of the ingredients compare to the composition of ordinary diets could be effective. The aim of the present study were evaluating the growth performance of two ornamental fish species Pterophyllum Scalare and Symphysodon Aequifasciatus, fed by Vimba vimba tissue hydrolyse, by use of pineapple extract,covered by sodium alginate and add at 1.5 and 3 percent of the diet for 60 days. For modelling the optimum level of pineapple extract for hydrolyzing process, comparison was done by proteinase K activity; qualitative and quantitative evaluations were done through SDS PAGE and Bradford method, respectively. The prepared hydrolyzate covered by 3% sodium alginate and added to formulated diet by WinFeed software. The results reveald that pineapple extract due to protease cysteine content has a significant potential in hydrolyzing, 45% of the protein were hydrolyzed. The results were also shown that 70% of the HP covered by alginate, and Bradford results announced the absorption and protein concentration values equal to 0.649 and 141.64 μg/ml, respectively. The highest SGR and the lowest FCR were computed for groups fed by diet containing 3% of covered HP which were equal to 2.28 and 2.71g and 0.94 and 1.1 for Angel and Discus, respectively(P<0.05).

Keywords

References

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Journal of Animal Environment
Volume 11, Issue 4
January 2020
Pages 257-264

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