The relative absorption of fatty acids in brown trout (Salmo trutta) fed a commercial extruded pellet coated with different lipid sources
The objective of the present study was to investigate the fatty acid absorption capabilities of brown trout (Salmo trut- ta) fed commercial extruded diets. Five commercial extruded pellets, different only in the lipid sources used for fat coat- ing, were tested on juvenile brown trout for 45 days. T...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2010-01-01
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| Series: | Italian Journal of Animal Science |
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| Online Access: | http://www.aspajournal.it/index.php/ijas/article/view/402 |
| _version_ | 1818954625784479744 |
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| author | Franco Valfré Vittorio Maria Moretti Federica Bellagamba Fabio Caprino Sara Panseri Ivan Giani Tiziana Mentasti Giovanni Mario Turchini |
| author_facet | Franco Valfré Vittorio Maria Moretti Federica Bellagamba Fabio Caprino Sara Panseri Ivan Giani Tiziana Mentasti Giovanni Mario Turchini |
| author_sort | Franco Valfré |
| collection | DOAJ |
| description | The objective of the present study was to investigate the fatty acid absorption capabilities of brown trout (Salmo trut- ta) fed commercial extruded diets. Five commercial extruded pellets, different only in the lipid sources used for fat coat- ing, were tested on juvenile brown trout for 45 days. The trout were reared in fresh water at 14.6 ± 0.4° C and 7.7 ± 0.3 mg/l, temperature and dissolved oxygen, respectively. The tested lipid sources were fish oil, canola oil, oleine oil, swine fat and poultry fat. After the adaptation period faeces were collected by gently stripping from anaesthetized fish. Fatty acid analysis was performed on experimental diets and on collected faeces to evaluate the relative absorption capabilities of the trout digestive system with respect to each detected fatty acid. The use of the relative absorption efficiency (rAE) was opted to evaluate the intrinsic capability of each fatty acid to be absorbed. Brown trout showed a specific preferential order of absorption of the fatty acids, preferring shorter over longer chain fatty acids and prefer- ring the more unsaturated to the more saturated fatty acids. The fatty acid that showed the best relative absorbability was the C18:4n-3 (rAE = 5.14 ± 0.72), which has a fairly short carbon chain, but at the same time a high unsatura- tion level, followed by the C18:3n-3 (rAE = 3.38 ± 0.30). The fatty acid that showed the worst relative absorbability (rAE = 0.21 ± 0.02) was C24:1n-9. |
| first_indexed | 2024-12-20T10:25:09Z |
| format | Article |
| id | doaj.art-c09a0cd838ab4e569577d05b6e927aac |
| institution | Directory Open Access Journal |
| issn | 1594-4077 1828-051X |
| language | English |
| last_indexed | 2024-12-20T10:25:09Z |
| publishDate | 2010-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Italian Journal of Animal Science |
| spelling | doaj.art-c09a0cd838ab4e569577d05b6e927aac2022-12-21T19:43:50ZengTaylor & Francis GroupItalian Journal of Animal Science1594-40771828-051X2010-01-014324125210.4081/ijas.2005.241The relative absorption of fatty acids in brown trout (Salmo trutta) fed a commercial extruded pellet coated with different lipid sourcesFranco ValfréVittorio Maria MorettiFederica BellagambaFabio CaprinoSara PanseriIvan GianiTiziana MentastiGiovanni Mario TurchiniThe objective of the present study was to investigate the fatty acid absorption capabilities of brown trout (Salmo trut- ta) fed commercial extruded diets. Five commercial extruded pellets, different only in the lipid sources used for fat coat- ing, were tested on juvenile brown trout for 45 days. The trout were reared in fresh water at 14.6 ± 0.4° C and 7.7 ± 0.3 mg/l, temperature and dissolved oxygen, respectively. The tested lipid sources were fish oil, canola oil, oleine oil, swine fat and poultry fat. After the adaptation period faeces were collected by gently stripping from anaesthetized fish. Fatty acid analysis was performed on experimental diets and on collected faeces to evaluate the relative absorption capabilities of the trout digestive system with respect to each detected fatty acid. The use of the relative absorption efficiency (rAE) was opted to evaluate the intrinsic capability of each fatty acid to be absorbed. Brown trout showed a specific preferential order of absorption of the fatty acids, preferring shorter over longer chain fatty acids and prefer- ring the more unsaturated to the more saturated fatty acids. The fatty acid that showed the best relative absorbability was the C18:4n-3 (rAE = 5.14 ± 0.72), which has a fairly short carbon chain, but at the same time a high unsatura- tion level, followed by the C18:3n-3 (rAE = 3.38 ± 0.30). The fatty acid that showed the worst relative absorbability (rAE = 0.21 ± 0.02) was C24:1n-9.http://www.aspajournal.it/index.php/ijas/article/view/402Brown trout, Dietary fatty acid, Relative absorption efficiency |
| spellingShingle | Franco Valfré Vittorio Maria Moretti Federica Bellagamba Fabio Caprino Sara Panseri Ivan Giani Tiziana Mentasti Giovanni Mario Turchini The relative absorption of fatty acids in brown trout (Salmo trutta) fed a commercial extruded pellet coated with different lipid sources Italian Journal of Animal Science Brown trout, Dietary fatty acid, Relative absorption efficiency |
| title | The relative absorption of fatty acids in brown trout (Salmo trutta) fed a commercial extruded pellet coated with different lipid sources |
| title_full | The relative absorption of fatty acids in brown trout (Salmo trutta) fed a commercial extruded pellet coated with different lipid sources |
| title_fullStr | The relative absorption of fatty acids in brown trout (Salmo trutta) fed a commercial extruded pellet coated with different lipid sources |
| title_full_unstemmed | The relative absorption of fatty acids in brown trout (Salmo trutta) fed a commercial extruded pellet coated with different lipid sources |
| title_short | The relative absorption of fatty acids in brown trout (Salmo trutta) fed a commercial extruded pellet coated with different lipid sources |
| title_sort | relative absorption of fatty acids in brown trout salmo trutta fed a commercial extruded pellet coated with different lipid sources |
| topic | Brown trout, Dietary fatty acid, Relative absorption efficiency |
| url | http://www.aspajournal.it/index.php/ijas/article/view/402 |
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