Efecto del genotipo sobre la composición de ácidos grasos de la grasa intramuscular y subcutánea de cerdos de raza Celta
DOI:
https://doi.org/10.3989/gya.0234141Palabras clave:
Cerdo de raza Celta, Genotipo, Localización en la canal, Perfil de ácidos grasoResumen
Un total de 45 cerdos de raza Celta fueron usados para estudiar el efecto del genotipo (líneas Barcina, Carballiña y Santiaguesa) sobre la composición de ácidos grasos de la grasa intramuscular y subcutánea. El contenido en grasa intramuscular estuvo influenciado por el genotipo (P < 0.05); la Barcina presentó los mayores valores (5.21% vs 1.99 y 3.59 para las líneas Santiaguesa y Carballiña respectivamente). Los lípidos totales y neutros de la grasa intramuscular de la línea Santiaguesa mostraron mayores contenidos de PUFA que las otras dos líneas. Los índices nutricionales también se vieron influenciados por el genotipo; la línea Santiguesa presentó los menores valores de los índices aterogénico y trombogénico y los mayores de la relación entre ácidos grasos hipo e hipercolesterolémicos. En los lípidos totales y neutros de la grasa intramuscular se obtuvieron mayores valores de MUFA y menores de PUFA (P < 0.05) que en la grasa subcutánea. En los lípidos polares, las muestras de grasa intramuscular presentaron los mayores valores de PUFA (entre 37–44%). Finalmente, la grasa subcutánea mostró valores superiores de MUFA y SFA que la intramuscular (P < 0.05). Las diferencias en el contenido de grasa intramuscular y de espesor de grasa subcutánea implica que su deposición puede estar regulada por diferentes mecanismos.
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