Differential partitioning of rumen-protected n-3 and n-6 fatty acids into muscles with different metabolism.
Meat Sci
; 137: 106-113, 2018 Mar.
Article
en En
| MEDLINE
| ID: mdl-29156325
ABSTRACT
Bioavailability of polyunsaturated fatty acids (PUFA) in ruminants is enhanced by their protection from ruminal biohydrogenation. Both n-3 and n-6 PUFA fulfil important physiological functions. We investigated potentially different incorporation patterns of these functional PUFA into three beef muscles with different activity characteristics. We supplemented 33 Angus heifers with rumen-protected oils characterized either by mainly C182 n-6 (linoleic acid (LA) in sunflower oil) or by C205 (eicosapentaenoic acid (EPA)) and C226 (docosahexaenoic acid (DHA)), both prevalent n-3 PUFA in fish oil. Contents and proportions of n-3 and n-6 PUFA of total fatty acids were elevated in the muscles of the respective diet group but they were partitioned differently into the muscles. For EPA and DHA, but not for LA, the diet effect was more distinct in the extensor carpi radialis compared to longissimus thoracis and biceps femoris. Partitioning of PUFA in metabolism could be related to muscle function. This has to be confirmed in other muscles, adipose tissues and organs.
Palabras clave
Biceps femoris; Extensor carpi radialis; Longissimus thoracis; Muscle lipid; cis-9, trans-11 dienoic acid (PubChem CID: 5280644); docosahexaenoic acid (PubChem CID: 6433873); eicosapentaenoic acid (PubChem CID: 446284); linoleic acid (PubChem CID: 528045); n3 fatty acid; n6 fatty acid; α-linolenic acid (PubChem CID: 5280934)
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Bovinos
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Aceites de Pescado
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Ácidos Grasos Omega-3
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Músculo Esquelético
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Ácidos Grasos Omega-6
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Aceite de Girasol
Idioma:
En
Revista:
Meat Sci
Año:
2018
Tipo del documento:
Article
País de afiliación:
Suiza