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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
01/08/1992 |
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Data da última atualização: |
07/06/2025 |
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Autoria: |
RAY, E. E. |
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Título: |
Relationship between fatty acid composition of lamb fat and dietary ingredients. |
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Ano de publicação: |
1975 |
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Fonte/Imprenta: |
Journal of Animal Science, v. 41, n. 6, p. 1767-1774, Dec. 1975. |
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DOI: |
https://doi.org/10.2527/jas1975.4161767x |
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Idioma: |
Inglês |
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Conteúdo: |
One hundred thirteen wether feeder lambs were individually fed to study the effects of ration and location of fat in the carcass upon fatty acid composition. The rations consisted of dehydrated alfalfa (17% protein) and corn. The proportions of alfalfa and corn varied from 0% to 100% in the 21 different rations by 5% increments. A urea-mineral supplement was added to rations containing 50% corn or more. The lambs were slaughtered after a feeding period of 105 days. Loin, dock and kidney fat samples were obtained from chilled (48 hr) carcasses. Fat samples were extracted, esterified and analyzed by gas-liquid chromatography. Data were statistically analyzed by analysis of variance and orthogonal polynomial regression. Depot fat contents of unsaturated acids (myristoleic, palmitoleic, oleic, linoleic, and linolenic) were affected by rations. Myristoleic, palmitoleic and linoleic significantly increased curvilinearly, oleic increased linearly and linoleic decreased linearly as level of corn increased. Linoleic acid contents were confounded by saturation of dietary linolenic, and oleic contents were confounded by saturation of dietary linoleic. There were no difference in saturated fatty acids, myristic and palmitic, but there was a curvilinear decrease in stearic. One could hy pothesize that these results may be related to non-mitochondrial fat biosynthesis, as influenced by the additional volatile fatty acids absorption. Differences were found between locations sampled for all fatty acids studied except myristic and palmitic acids. Saturated acids were deposited in the following order: kidney, dock and loin, whereas odd-chained acids and unsaturates, except linolenic, were deposited in reverse order. There were no differences in linolenic between loin and kidney and kidney and dock samples. MenosOne hundred thirteen wether feeder lambs were individually fed to study the effects of ration and location of fat in the carcass upon fatty acid composition. The rations consisted of dehydrated alfalfa (17% protein) and corn. The proportions of alfalfa and corn varied from 0% to 100% in the 21 different rations by 5% increments. A urea-mineral supplement was added to rations containing 50% corn or more. The lambs were slaughtered after a feeding period of 105 days. Loin, dock and kidney fat samples were obtained from chilled (48 hr) carcasses. Fat samples were extracted, esterified and analyzed by gas-liquid chromatography. Data were statistically analyzed by analysis of variance and orthogonal polynomial regression. Depot fat contents of unsaturated acids (myristoleic, palmitoleic, oleic, linoleic, and linolenic) were affected by rations. Myristoleic, palmitoleic and linoleic significantly increased curvilinearly, oleic increased linearly and linoleic decreased linearly as level of corn increased. Linoleic acid contents were confounded by saturation of dietary linolenic, and oleic contents were confounded by saturation of dietary linoleic. There were no difference in saturated fatty acids, myristic and palmitic, but there was a curvilinear decrease in stearic. One could hy pothesize that these results may be related to non-mitochondrial fat biosynthesis, as influenced by the additional volatile fatty acids absorption. Differences were found between locations sampled for all... Mostrar Tudo |
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Thesagro: |
Ácido Graxo; Carcaça; Nutrição; Ovino. |
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Thesaurus Nal: |
Carcass composition; Fatty acid composition; Lambs; Ruminant nutrition; Sheep. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02526naa a2200241 a 4500
001 1522069
005 2025-06-07
008 1975 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.2527/jas1975.4161767x$2DOI
100 1 $aRAY, E. E.
245 $aRelationship between fatty acid composition of lamb fat and dietary ingredients.$h[electronic resource]
260 $c1975
520 $aOne hundred thirteen wether feeder lambs were individually fed to study the effects of ration and location of fat in the carcass upon fatty acid composition. The rations consisted of dehydrated alfalfa (17% protein) and corn. The proportions of alfalfa and corn varied from 0% to 100% in the 21 different rations by 5% increments. A urea-mineral supplement was added to rations containing 50% corn or more. The lambs were slaughtered after a feeding period of 105 days. Loin, dock and kidney fat samples were obtained from chilled (48 hr) carcasses. Fat samples were extracted, esterified and analyzed by gas-liquid chromatography. Data were statistically analyzed by analysis of variance and orthogonal polynomial regression. Depot fat contents of unsaturated acids (myristoleic, palmitoleic, oleic, linoleic, and linolenic) were affected by rations. Myristoleic, palmitoleic and linoleic significantly increased curvilinearly, oleic increased linearly and linoleic decreased linearly as level of corn increased. Linoleic acid contents were confounded by saturation of dietary linolenic, and oleic contents were confounded by saturation of dietary linoleic. There were no difference in saturated fatty acids, myristic and palmitic, but there was a curvilinear decrease in stearic. One could hy pothesize that these results may be related to non-mitochondrial fat biosynthesis, as influenced by the additional volatile fatty acids absorption. Differences were found between locations sampled for all fatty acids studied except myristic and palmitic acids. Saturated acids were deposited in the following order: kidney, dock and loin, whereas odd-chained acids and unsaturates, except linolenic, were deposited in reverse order. There were no differences in linolenic between loin and kidney and kidney and dock samples.
650 $aCarcass composition
650 $aFatty acid composition
650 $aLambs
650 $aRuminant nutrition
650 $aSheep
650 $aÁcido Graxo
650 $aCarcaça
650 $aNutrição
650 $aOvino
773 $tJournal of Animal Science$gv. 41, n. 6, p. 1767-1774, Dec. 1975.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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