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vol.45 número3Associations between animal traits, carcass traits and carcass classification in a selected abattoir in the Eastern Cape Province, South AfricaFat quality of South African pigs with different carcass classification characteristics índice de autoresíndice de materiabúsqueda de artículos
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South African Journal of Animal Science

versión On-line ISSN 2221-4062
versión impresa ISSN 0375-1589

Resumen

STRYDOM, P.E. et al. Sources of variation in quality of South African beef: Case studies in relation to the red meat classification system. S. Afr. j. anim. sci. [online]. 2015, vol.45, n.3, pp.289-301. ISSN 2221-4062.  http://dx.doi.org/10.4314/SAJAS.V45I3.7.

The South African classification system describes beef carcasses in regard to visual fat cover, conformation and age by dentition. Animal age provides a fairly accurate description of expected eating quality in regard to tenderness in an industry where other sources of variation in tenderness are limited. Since deregulation in the beef industry in the 90s many changes have occurred in all parts of the value chain. This paper presents a number of case studies that focussed on the sources of variation in meat quality, but in particular on sources of changes in meat tenderness over the past two decades. These sources include feeding regime, the use of beta agonists, post mortem ageing and electrical stimulation. In some studies these factors are integrated with age or interactions among two or more of these factors are investigated.

Palabras clave : Age; beef; classification; dentition; grading.

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