Muscular Partitioning in the Semitendinosus Muscle of the Pig

Neuromuscular compartments are subvolumens supplied by a primary nerve branch with homogeneous fiber characteristics. This muscular organization is important for understanding the muscle function in relation to postural and dynamic implications and also is relevant for appraising meat quality. Curre...

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Autores principales:	Graziotti,Guillermo H, Ríos,Clara M, Rodríguez Menéndez,José M, Salinas,Matías A, Bosco,Alexis, Paltenghi Ceschel,Alejandra, Affricano,Néstor O, Victorica,Carlos L
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2009
Materias:	Pig Semitendinosus muscle Muscle fibers Meat quality
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000300048
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spelling	oai:scielo:S0717-950220090003000482010-04-05Muscular Partitioning in the Semitendinosus Muscle of the PigGraziotti,Guillermo HRíos,Clara MRodríguez Menéndez,José MSalinas,Matías ABosco,AlexisPaltenghi Ceschel,AlejandraAffricano,Néstor OVictorica,Carlos L Pig Semitendinosus muscle Muscle fibers Meat quality Neuromuscular compartments are subvolumens supplied by a primary nerve branch with homogeneous fiber characteristics. This muscular organization is important for understanding the muscle function in relation to postural and dynamic implications and also is relevant for appraising meat quality. Current researches associate fiber muscle characteristics with perimortem processes that regulate muscle transformation into meat. It is known that pig muscle has four heavy chain myosin isoforms: I, IIa, IIx and IIb. Castrated male pigs were slaughtered at 100 kg live weight. Semitendinosus muscle samples of each subvolumen determined previously (R1, R2, R3, R4) were frozen in liquid nitrogen and reacted for myofibrillar ATPase and NADH-TR for determining fiber types and oxidative capacity respectively. It were identified I, IIA and IIX/IIB fiber types. The frequency distribution of the I, IIA, and IIX/IIB fiber types were significantly greater in R1- R4, R4 and R3 respectively. The CSA of all fiber types was significantly larger in R1 than other compartments, notwithstanding CSA did not vary significantly among fiber types; oxidative capacity was significantly greater in R4. These results show a heterogeneousness of the muscle which would explain probably the disagreements documented between characteristics of fiber and meat quality traits.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.27 n.3 20092009-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000300048en10.4067/S0717-95022009000300048
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Pig Semitendinosus muscle Muscle fibers Meat quality
spellingShingle	Pig Semitendinosus muscle Muscle fibers Meat quality Graziotti,Guillermo H Ríos,Clara M Rodríguez Menéndez,José M Salinas,Matías A Bosco,Alexis Paltenghi Ceschel,Alejandra Affricano,Néstor O Victorica,Carlos L Muscular Partitioning in the Semitendinosus Muscle of the Pig
description	Neuromuscular compartments are subvolumens supplied by a primary nerve branch with homogeneous fiber characteristics. This muscular organization is important for understanding the muscle function in relation to postural and dynamic implications and also is relevant for appraising meat quality. Current researches associate fiber muscle characteristics with perimortem processes that regulate muscle transformation into meat. It is known that pig muscle has four heavy chain myosin isoforms: I, IIa, IIx and IIb. Castrated male pigs were slaughtered at 100 kg live weight. Semitendinosus muscle samples of each subvolumen determined previously (R1, R2, R3, R4) were frozen in liquid nitrogen and reacted for myofibrillar ATPase and NADH-TR for determining fiber types and oxidative capacity respectively. It were identified I, IIA and IIX/IIB fiber types. The frequency distribution of the I, IIA, and IIX/IIB fiber types were significantly greater in R1- R4, R4 and R3 respectively. The CSA of all fiber types was significantly larger in R1 than other compartments, notwithstanding CSA did not vary significantly among fiber types; oxidative capacity was significantly greater in R4. These results show a heterogeneousness of the muscle which would explain probably the disagreements documented between characteristics of fiber and meat quality traits.
author	Graziotti,Guillermo H Ríos,Clara M Rodríguez Menéndez,José M Salinas,Matías A Bosco,Alexis Paltenghi Ceschel,Alejandra Affricano,Néstor O Victorica,Carlos L
author_facet	Graziotti,Guillermo H Ríos,Clara M Rodríguez Menéndez,José M Salinas,Matías A Bosco,Alexis Paltenghi Ceschel,Alejandra Affricano,Néstor O Victorica,Carlos L
author_sort	Graziotti,Guillermo H
title	Muscular Partitioning in the Semitendinosus Muscle of the Pig
title_short	Muscular Partitioning in the Semitendinosus Muscle of the Pig
title_full	Muscular Partitioning in the Semitendinosus Muscle of the Pig
title_fullStr	Muscular Partitioning in the Semitendinosus Muscle of the Pig
title_full_unstemmed	Muscular Partitioning in the Semitendinosus Muscle of the Pig
title_sort	muscular partitioning in the semitendinosus muscle of the pig
publisher	Sociedad Chilena de Anatomía
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000300048
work_keys_str_mv	AT graziottiguillermoh muscularpartitioninginthesemitendinosusmuscleofthepig AT riosclaram muscularpartitioninginthesemitendinosusmuscleofthepig AT rodriguezmenendezjosem muscularpartitioninginthesemitendinosusmuscleofthepig AT salinasmatiasa muscularpartitioninginthesemitendinosusmuscleofthepig AT boscoalexis muscularpartitioninginthesemitendinosusmuscleofthepig AT paltenghiceschelalejandra muscularpartitioninginthesemitendinosusmuscleofthepig AT affricanonestoro muscularpartitioninginthesemitendinosusmuscleofthepig AT victoricacarlosl muscularpartitioninginthesemitendinosusmuscleofthepig
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Muscular Partitioning in the Semitendinosus Muscle of the Pig

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