Addition of olive oil to dairy ewe diets: effect on milk fatty acid profile and animal performance
9 pages, 1 figure, 4 tables.
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| Format: | artículo biblioteca |
| Language: | English |
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American Dairy Science Association
2008
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| Subjects: | Oleic acid, Olive oil, Conjugated linoleic acids, Monounsaturated fatty acid, |
| Online Access: | http://hdl.handle.net/10261/7988 |
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dig-igm-es-10261-79882018-09-14T07:35:52Z Addition of olive oil to dairy ewe diets: effect on milk fatty acid profile and animal performance Gómez-Cortés, Pilar Frutos, Pilar Mantecón, Ángel R. Juárez, Manuela Fuente, Miguel Ángel de la Hervás, Gonzalo Oleic acid Olive oil Conjugated linoleic acids Monounsaturated fatty acid 9 pages, 1 figure, 4 tables. The effects of ruminant diet supplementation with linoleic or different polyunsaturated fatty acids (FA) have been well documented. Less abundant information, however, exists on the effects of incorporating monounsaturated FA, such as oleic acid, on lipid metabolism or animal performance. The purpose of this work was to assess the effects of feeding dairy ewes a diet supplemented with high levels of olive oil (OO) on milk yield and composition, paying particular attention to the FA profile. Twenty-four Assaf ewes were fed ad libitum with 2 diets, control or supplemented with 6% OO (2 lots of 6 animals per diet) for 4 wk. Milk yield and composition and dry matter intake were recorded weekly. Milk FA composition was determined by gas chromatography and conjugated linoleic acid profile by silver ion HPLC. Milk yield increased in ewes receiving OO, with no differences in dry matter intake. The OO diet decreased the milk protein percentage but increased the milk fat, protein, and total solids yield. Medium-chain saturated FA (C10:0 to C16:0) content was reduced with OO supplementation, whereas C18:0 and cis-9 C18:1 content increased. Leaving aside trans- 11, most trans C18:1 isomers, mainly trans-10, increased in supplemented ewes. The main conjugated linoleic acid isomer (cis-9, trans-11 C18:2) decreased with OO supplementation, whereas trans-7, cis-9 and trans-9, cis-11 C18:2 exhibited a remarkable increase. These results support the argument that the supplementation of ewe diets with high levels of OO does not have any detrimental effects on animal performance but substantially modifies the FA profile. Key words: oleic acid, olive oil, conjugated linoleic acid, monounsaturated fatty acid This work was supported by the Ministerio de Educación y Ciencia (Spain; Research Projects AGL2005-04760 and Consolider CSD2007-063) and the Comunidad Autónoma de Madrid (Project S-0505/AGR/000153). Peer reviewed 2008-10-24T12:18:09Z 2008-10-24T12:18:09Z 2008 artículo http://purl.org/coar/resource_type/c_6501 Journal of Dairy Science, 2008, 91 (8), 3119-3127 0022-0302 http://hdl.handle.net/10261/7988 10.3168/jds.2007-0954 en http://jds.fass.org/cgi/reprint/91/8/3119 none 136786 bytes application/pdf American Dairy Science Association |
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España |
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ES |
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dig-igm-es |
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biblioteca |
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Europa del Sur |
| libraryname |
Biblioteca del IGM España |
| language |
English |
| topic |
Oleic acid Olive oil Conjugated linoleic acids Monounsaturated fatty acid Oleic acid Olive oil Conjugated linoleic acids Monounsaturated fatty acid |
| spellingShingle |
Oleic acid Olive oil Conjugated linoleic acids Monounsaturated fatty acid Oleic acid Olive oil Conjugated linoleic acids Monounsaturated fatty acid Gómez-Cortés, Pilar Frutos, Pilar Mantecón, Ángel R. Juárez, Manuela Fuente, Miguel Ángel de la Hervás, Gonzalo Addition of olive oil to dairy ewe diets: effect on milk fatty acid profile and animal performance |
| description |
9 pages, 1 figure, 4 tables. |
| format |
artículo |
| topic_facet |
Oleic acid Olive oil Conjugated linoleic acids Monounsaturated fatty acid |
| author |
Gómez-Cortés, Pilar Frutos, Pilar Mantecón, Ángel R. Juárez, Manuela Fuente, Miguel Ángel de la Hervás, Gonzalo |
| author_facet |
Gómez-Cortés, Pilar Frutos, Pilar Mantecón, Ángel R. Juárez, Manuela Fuente, Miguel Ángel de la Hervás, Gonzalo |
| author_sort |
Gómez-Cortés, Pilar |
| title |
Addition of olive oil to dairy ewe diets: effect on milk fatty acid profile and animal performance |
| title_short |
Addition of olive oil to dairy ewe diets: effect on milk fatty acid profile and animal performance |
| title_full |
Addition of olive oil to dairy ewe diets: effect on milk fatty acid profile and animal performance |
| title_fullStr |
Addition of olive oil to dairy ewe diets: effect on milk fatty acid profile and animal performance |
| title_full_unstemmed |
Addition of olive oil to dairy ewe diets: effect on milk fatty acid profile and animal performance |
| title_sort |
addition of olive oil to dairy ewe diets: effect on milk fatty acid profile and animal performance |
| publisher |
American Dairy Science Association |
| publishDate |
2008 |
| url |
http://hdl.handle.net/10261/7988 |
| work_keys_str_mv |
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