Efecto de la selección divergente por grasa intramuscular en caracteres de metabolismo lipídico en conejo.
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[1] Universidad Politécnica de Valencia
Universidad Politécnica de Valencia
Valencia, España
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- Localización: XVI Jornadas sobre Producción Animal: 19 y 20 de mayo de 2015, Zaragoza / Javier Álvarez Rodríguez (aut.), Begoña Panea Doblado (aut.), Jorge Hugo Calvo Lacosta (aut.), Mireia Blanco Alibés (aut.), José Alfonso Abecia Martínez (aut.), Daniel Villalba Mata (aut.), María Ángeles Latorre Górriz (aut.), Vol. 2, 2015, ISBN 978-84-606-7969-1, págs. 555-557
- Idioma: español
- Títulos paralelos:
- Effect of divergent selection for intramuscular fat on lipid metabolism traits in rabbits
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Resumen
A program of divergent selection for intramuscular fat (IMF) in the Longissimus dorsi muscle (LD) in rabbits was carried out. Difference in IMF between high (H) and low (L) lines after 5 generations was a 27.7 % of the mean at 9 weeks of age. Enzymes activities involving lipid metabolism of two muscles (Semimembranosus propius (SMP) and LD) and perirenal fat (PF) were studied in H and L lines at 9 and 13 weeks. Bayesian inference was used. Muscle SMP showed higher G6PDH and FAS lipogenic activities and higher oxidative activities than LD, while LD showed a greater glycolytic activity. Lipogenic activities increased with age in all studied tissues. Differences between H and L lines were detected for lipogenic and catabolic activities at 13 weeks but not at 9 weeks. Greater lipogenic activities in SMP, LM and PF were observed in H line compared to L line. Line H had higher glycolytic activity in LD and lower oxidative activity in SMP than L line. Our results indicate that lipogenic and metabolic activities are influenced by the metabolism of each muscle. Differences in lipogenic and oxidation activities between H and L lines can be attributed to the selection for IMF.
