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Título: | The influences of carcass weight and depot on the fatty acid composition of fats of suckling Manchego lambs |
Autor: | Cañeque, V.; Díaz, M. Teresa; Álvarez, I.; Lauzurica, S.; Pérez, Concepción CSIC ORCID ; Fuente, Jesús M. de la CSIC ORCID | Palabras clave: | Fatty acids Suckling lamb Carcass weight Fat depot |
Fecha de publicación: | 2005 | Editor: | Elsevier | Citación: | Meat Science 70(2): 373-379 (2005) | Resumen: | The effects of carcass weight (<5.5 kg, 5.5-6.5 kg, ≥6.5 kg) of Manchego suckling lambs, type of fat depot of the leg (subcutaneous, intermuscular and intramuscular) and muscle (m. longissimus dorsi (LD) or m. quadriceps femoris (QF)) on the fatty acid composition were studied. Carcass fatness increased with increasing carcass weight. However, few differences in fatty acid proportion were observed between the three carcass weight groups. The lightest carcasses had lower proportions of myristic (C140) and palmitoleic (C161) acid and higher proportions of stearic (C180) acid, desirable fatty acids (DFA) (C180 + total unsaturated fatty acid (TUFA)) and a greater nutritive value ((C180 + C181)/C160). The fatty acid composition of subcutaneous and intermuscular fat depots of the leg were similar, whereas the intramuscular fat depot was different from both of these, since it had a lower proportion of saturated fatty acids (SFA), a greater proportion of TUFA, higher PUFA/SFA and n - 6/n - 3 ratios, and greater DFA and nutritive values. The intramuscular fat of the LD was more saturated than QF, higher SFA, and had lower value of PUFA/SFA ratio and DFA. These results indicated that the intramuscular fat quality of the leg was better than subcutaneous and intermuscular fat depots and also that intramuscular fat displayed better attributes of quality (lower SFA, higher TUFA, and greater PUFA/SFA ratio and DFA as well) than intramuscular fat of the LD from the consumer health standpoint. Despite carcass weight affected carcass fatness, it did not seem to influence the proportions of saturated or polyunsaturated fatty acids. For this reason, carcass weight probably had little effect on the organoleptic characteristics of the meat. © 2005 Elsevier Ltd. All rights reserved. | URI: | http://hdl.handle.net/10261/293098 | DOI: | 10.1016/j.meatsci.2005.02.003 | ISSN: | 0309-1740 |
Aparece en las colecciones: | (INIA) Artículos |
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