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Biblioteca(s): | INIA Las Brujas.
Fecha corriente: | 02/02/2022
Fecha de la última actualización: | 02/02/2022
Autoria: | BÜNGER, L.; NAVAJAS, E.; STEVENSON, L.; LAMBE, N.R.; MALTIN, C.A.; SIMM, G.; FISHER, A.V.; CHANG, K.C.
Afiliación: | L. BÜNGER, Sustainable Livestock Systems Group, Scottish Agricultural College, King’s Buildings, Edinburgh EH9 3JG, United Kingdom; ELLY ANA NAVAJAS VALENTINI, Sustainable Livestock Systems Group, Scottish Agricultural College, King’s Buildings, Edinburgh EH9 3JG, United Kingdom; L. STEVENSON, Veterinary Molecular Medicine Laboratory, Division of Animal Production and Public Health, University of Glasgow Veterinary School, Bearsden Road, Glasgow G61 1QH, United Kingdom; N.R. LAMBE, Sustainable Livestock Systems Group, Scottish Agricultural College, King’s Buildings, Edinburgh EH9 3JG, United Kingdom; C.A. MALTIN, School of Pharmacy and Life Sciences, Robert Gordon University, St Andrews St, Aberdeen and Quality Meat Scotland, Rural Centre, Ingliston, Edinburgh, EH28 8NZ, United Kingdom; G. SIMM, Sustainable Livestock Systems Group, Scottish Agricultural College, King’s Buildings, Edinburgh EH9 3JG, United Kingdom; A.V. FISHER, University of Bristol, Division of Farm Animal Science, Langford, Bristol BS40 5DU, United Kingdom; K.C. CHANG, School of Veterinary Medicine and Science, University of Nottingham, Room A14a Veterinary Academic Building, Sutton Bonington Campus, Nr Loughborough, LE12 5RD, United Kingdom.
Título: | Muscle fibre characteristics of two contrasting sheep breeds: Scottish Blackface and Texel.
Año de publicación: | 2009
Fuente/Imprenta: | Meat Science, 2009, Volume 81, Issue 2, Pages 372-381. doi: https://doi.org/10.1016/j.meatsci.2008.08.017
ISSN: | 0309-1740
DOI: | 10.1016/j.meatsci.2008.08.017
Idioma: | Inglés
Notas: | Article history: Received 29 March 2008; Received in revised form 26 August 2008; Accepted 31 August 2008.

Contenido:

ABSTRACT.- This study evaluates the effects of breed and sex, together with those of birth weight and litter size, on muscle fibre type characteristics in Texel (TEX) and Scottish Blackface sheep (SBF). The M. longissimus thoracis et lumborum (LTL) of TEX had a significantly higher total muscle cross-sectional area (16%), a higher
total fibre number (20%) and a higher muscle CT density (5%) than the SBF but had a similar average muscle fibre size. The frequency of slow fibres in the LTL in TEX was lower than in SBF (7.5% vs. 9.6%). Muscle fibre histochemistry similarly demonstrated that the oxidative fibre frequency in TEX was 10% lower than in SBF. The inter-fibre lipid content in TEX was also significantly lower than in SBF. Correspondingly, TEX displayed higher frequency (91.7% vs. 90.9% in SBF) and higher relative total area (92.5% vs. 90.4% in SBF) of fast fibres. These breed differences in muscle fibre traits indicate underlying genetic variation, and future analyses will evaluate the link of these traits to meat quality and assess the usefulness of these traits in breeding programmes.
 2008 Published by Elsevier Ltd.

Palabras-Clave: | Breed; Histology; Lamb; Meat quality; Muscle fibre types; Sex effect; Sheep.
Categoría del tema: | L01 Ganadería
Registro original: | INIA Las Brujas (LB)
Ejemplares: | LB - (102981-1) - ADD - AP - DD - PP/Meat Science/2009 -  -  - DIS