Effect of dietary linolenic acid (18:3n–3)/linoleic acid (18:2n–6) ratio on growth performance, tissue fatty acid profile and histological alterations in the liver of juvenile Tor tambroides
This study was conducted to determine optimal ratios of dietary linolenic acid (18:3n-3, LnA) to linoleic acid (18:2n-6, LA) for Tor tambroides. Juveniles were fed three trial diets with different ratios of LnA/LA (0.0, 0.5 and 1.0) for 10 weeks. Another diet contained 100% palm oil, which was simil...
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| Format: | Article |
| Language: | English |
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Iranian Fisheries Science Research Institute
2014
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| Online Access: | http://psasir.upm.edu.my/id/eprint/37224/ http://psasir.upm.edu.my/id/eprint/37224/1/Effect%20of%20dietary%20linolenic%20acid.pdf |
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| author | Fard, Ehsan Ramezani Kamarudin, Mohd Salleh Ehteshami, Fariborz Zadeh, Shahram Shakiba Saad, Che Roos Zokaeifar, Hadi |
| author_facet | Fard, Ehsan Ramezani Kamarudin, Mohd Salleh Ehteshami, Fariborz Zadeh, Shahram Shakiba Saad, Che Roos Zokaeifar, Hadi |
| author_sort | Fard, Ehsan Ramezani |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | This study was conducted to determine optimal ratios of dietary linolenic acid (18:3n-3, LnA) to linoleic acid (18:2n-6, LA) for Tor tambroides. Juveniles were fed three trial diets with different ratios of LnA/LA (0.0, 0.5 and 1.0) for 10 weeks. Another diet contained 100% palm oil, which was similar tothe diet with 0.0 LnA/LA ratio but different in total amounts of C18polyunsaturated fatty acid, was also used as a control. At the end of the experiment, no significant difference in growth performance was observed among treatments. The overall fatty acid composition in muscle of T. tambroides fed experimental diets was similar in terms of saturated fatty acid and monounsaturated fatty acid. The muscle of fish fed diet with LnA/LA ratio of 0.0 contained significantly lower (p<.05) amount of overall n-3 PUFA than those fed the other diets. Intense accumulation of lipid in the liver parenchyma of all fish except for those fed control diet led to severe degeneration of hepatocytes indicating fatty liver. However, most of the hepatocytes of fish fed control diet were also swollen with nuclei migrated. T. tambroides fed diet with LnA/LA ratio of 0.0 showed degenerated enterocytes with an epithelium with disrupted edges. In conclusion, using vegetable oils contained high level of either LA or LnA in T. tambroides diet seemed to have no advantage over using palm oil contained high level of saturated fatty acid. |
| first_indexed | 2025-11-15T09:36:18Z |
| format | Article |
| id | upm-37224 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T09:36:18Z |
| publishDate | 2014 |
| publisher | Iranian Fisheries Science Research Institute |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-372242015-09-15T04:04:21Z http://psasir.upm.edu.my/id/eprint/37224/ Effect of dietary linolenic acid (18:3n–3)/linoleic acid (18:2n–6) ratio on growth performance, tissue fatty acid profile and histological alterations in the liver of juvenile Tor tambroides Fard, Ehsan Ramezani Kamarudin, Mohd Salleh Ehteshami, Fariborz Zadeh, Shahram Shakiba Saad, Che Roos Zokaeifar, Hadi This study was conducted to determine optimal ratios of dietary linolenic acid (18:3n-3, LnA) to linoleic acid (18:2n-6, LA) for Tor tambroides. Juveniles were fed three trial diets with different ratios of LnA/LA (0.0, 0.5 and 1.0) for 10 weeks. Another diet contained 100% palm oil, which was similar tothe diet with 0.0 LnA/LA ratio but different in total amounts of C18polyunsaturated fatty acid, was also used as a control. At the end of the experiment, no significant difference in growth performance was observed among treatments. The overall fatty acid composition in muscle of T. tambroides fed experimental diets was similar in terms of saturated fatty acid and monounsaturated fatty acid. The muscle of fish fed diet with LnA/LA ratio of 0.0 contained significantly lower (p<.05) amount of overall n-3 PUFA than those fed the other diets. Intense accumulation of lipid in the liver parenchyma of all fish except for those fed control diet led to severe degeneration of hepatocytes indicating fatty liver. However, most of the hepatocytes of fish fed control diet were also swollen with nuclei migrated. T. tambroides fed diet with LnA/LA ratio of 0.0 showed degenerated enterocytes with an epithelium with disrupted edges. In conclusion, using vegetable oils contained high level of either LA or LnA in T. tambroides diet seemed to have no advantage over using palm oil contained high level of saturated fatty acid. Iranian Fisheries Science Research Institute 2014 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/37224/1/Effect%20of%20dietary%20linolenic%20acid.pdf Fard, Ehsan Ramezani and Kamarudin, Mohd Salleh and Ehteshami, Fariborz and Zadeh, Shahram Shakiba and Saad, Che Roos and Zokaeifar, Hadi (2014) Effect of dietary linolenic acid (18:3n–3)/linoleic acid (18:2n–6) ratio on growth performance, tissue fatty acid profile and histological alterations in the liver of juvenile Tor tambroides. Iranian Journal of Fisheries Sciences, 13 (1). pp. 185-200. ISSN 1562-2916 http://www.jifro.ir/browse.php?a_id=1438&sid=1&slc_lang=en |
| spellingShingle | Fard, Ehsan Ramezani Kamarudin, Mohd Salleh Ehteshami, Fariborz Zadeh, Shahram Shakiba Saad, Che Roos Zokaeifar, Hadi Effect of dietary linolenic acid (18:3n–3)/linoleic acid (18:2n–6) ratio on growth performance, tissue fatty acid profile and histological alterations in the liver of juvenile Tor tambroides |
| title | Effect of dietary linolenic acid (18:3n–3)/linoleic acid (18:2n–6) ratio on growth performance, tissue fatty acid profile and histological alterations in the liver of juvenile Tor tambroides |
| title_full | Effect of dietary linolenic acid (18:3n–3)/linoleic acid (18:2n–6) ratio on growth performance, tissue fatty acid profile and histological alterations in the liver of juvenile Tor tambroides |
| title_fullStr | Effect of dietary linolenic acid (18:3n–3)/linoleic acid (18:2n–6) ratio on growth performance, tissue fatty acid profile and histological alterations in the liver of juvenile Tor tambroides |
| title_full_unstemmed | Effect of dietary linolenic acid (18:3n–3)/linoleic acid (18:2n–6) ratio on growth performance, tissue fatty acid profile and histological alterations in the liver of juvenile Tor tambroides |
| title_short | Effect of dietary linolenic acid (18:3n–3)/linoleic acid (18:2n–6) ratio on growth performance, tissue fatty acid profile and histological alterations in the liver of juvenile Tor tambroides |
| title_sort | effect of dietary linolenic acid (18:3n–3)/linoleic acid (18:2n–6) ratio on growth performance, tissue fatty acid profile and histological alterations in the liver of juvenile tor tambroides |
| url | http://psasir.upm.edu.my/id/eprint/37224/ http://psasir.upm.edu.my/id/eprint/37224/ http://psasir.upm.edu.my/id/eprint/37224/1/Effect%20of%20dietary%20linolenic%20acid.pdf |