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Assessing the feasibility of using pomegranate ( Punica granatum ) seed oil, rich in conjugated linolenic acid, as a lipid source in the diet of common carp, Cyprinus carpio , juveniles
Author(s) -
Zakeri Donya,
RamezaniFard Ehsan,
Mashinchian Moradi Ali
Publication year - 2019
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/are.14014
Subject(s) - cyprinus , biology , common carp , sunflower oil , fish oil , docosahexaenoic acid , food science , sunflower seed , linolenic acid , grass carp , punica , fatty acid , carp , zoology , polyunsaturated fatty acid , biochemistry , sunflower , fishery , linoleic acid , fish <actinopterygii> , horticulture
In this study, the feasibility of using pomegranate seed oil, rich in conjugated linolenic acid and its partial replacement for fish oil in fish diet were investigated. Common carp, Cyprinus carpio , juveniles (1.8 ± 0.1 g) were fed four isonitrogenous and isolipidic diets with similar basal composition but different oil mixture containing 100% fish oil (A), 50% fish oil +50% sunflower oil (B), 50% fish oil +25% sunflower oil +25% pomegranate seed oil (C) and 50% fish oil +50% pomegranate seed oil (D) for 8 weeks. The highest weight gain was observed in fish fed diet D ( p < 0.05). Test diets had no significant effect ( p > 0.05) on saturated and monounsaturated fatty acid contents of fish muscle. Docosahexaenoic acid (22:6n‐3; DHA) was significantly lower in the muscle of fish fed diet B ( p < 0.05) compared to those fed diet A. However, there was no significant difference in the muscle DHA content of fish fed diets A, C, or D. No specific hepatocyte damage associated to dietary pomegranate seed oil was found in this study. This study showed a 50‐50 combination of fish oil and pomegranate seed oil could be used as dietary lipid source for common carp without any adverse effect on growth performance or muscle n‐3 content while accumulated punicic acid in the muscle could be considered as added value for the final human consumer.