Animal performance and fatty acid composition of lambs fed with different vegetable oils |
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Authors: | T Manso R Bodas T Castro V Jimeno AR Mantecon |
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Affiliation: | 1. ETS Ingenierías Agrarias, Universidad de Valladolid, 34004 Palencia, Spain;2. Instituto de Ganadería de Montaña (CSIC-ULE), 24346 Grulleros, León, Spain;3. Dept. Producción Animal, Univ. Complutense de Madrid, 28040 Madrid, Spain;4. Dept. Producción Animal, Univ. Politécnica de Madrid, 28040 Madrid, Spain |
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Abstract: | Twenty-seven lambs were used to investigate the effects of the inclusion of 4% hydrogenated palm oil (HPO) or sunflower oil (SFO) in the concentrate on animal performance, carcass and meat quality and fat characteristics and fatty acid composition. Animals (16.2 ± 0.27 kg initial weight) were fed concentrate (Control, HPO or SFO) and barley straw ad libitum and slaughtered at 25 kg. SFO lambs tended to eat less concentrate than HPO animals (P < 0.10). Neither HPO nor SFO affected any of the carcass characteristics studied, meat pH and meat and fat colour (P > 0.05). SFO decreased proportions of C16:0, C18:1 cis-11 and C18:3 (P < 0.05) and increased C18:1 trans (P < 0.001) and C18:2/C18:3 ratio (P < 0.05). Atherogenicity index was lower (P < 0.05) when SFO was included in the concentrate. HPO did not affected and SFO improved fatty acid composition of fattening lambs without affecting animal performance. |
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Keywords: | Palm oil Sunflower oil Fattening lambs Fatty acid Atherogenicity |
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