Efecto del tiempo de suplementación con vitamina e o pastoreo con alfalfa en el contenido de Alpha-tocoferol en plasma y carne y en la oxidación lipídica en corderos ligeros
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[1] CITA
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[2] ARID
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- Localización: XV Jornadas sobre Producción Animal: 14 y 15 de mayo de 2013, Zaragoza / Jorge Hugo Calvo Lacosta (aut.), Isabel Casasús Pueyo (aut.), Margalida Joy Torrens (aut.), Javier Álvarez Rodríguez (aut.), Luis Varona Aguado (aut.), Begoña Panea Doblado (aut.), Carlos Calvete Margolles (aut.), Joaquim Barcells Teres (aut.), Vol. 1, 2013, ISBN 978-84-695-7684-7, págs. 219-221
- Idioma: español
- Títulos paralelos:
- Effect of finishing period length with vitamin e supplementation and alfalfa grazing on plasma and meat alpha-tocopherol content and lipid oxidation
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Resumen
Indoor-kept concentrate-fed light lambs (n=54) were supplemented with 500 mg of dl-a-tocopheryl acetate/kg concentrate for different days (from 4 to 42) before slaughtering at 22–24 kg BW. Simultaneously, 8 lambs with their dams were alfalfa-grazed and the lambs were slaughtered at the same weight. After 7 days of intake, plasma a-tocopherol levels in lambs supplemented with a-tocoferol increased significantly to be approximately 5-fold higher than C lambs. After the day 11 the plasma a-tocopherol content kept steady. The effect of the grazing length on plasma a-tocopherol was not significant. In both muscles studied (LT and ST) the period length of supplementation of a-tocopherol had significant influence increasing the content until the end of the study, although no differences between LT and ST muscles were observed. In lipid oxidation there was a significant interaction between days of intake concentrate and time of display in meat, TBARS values from 0 to 14 days of intake had a sharply decrease and thereafter kept steady. Thereby seems not suitable fed light lambs more than 14 d before slaughter.
