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Título: | Caspase activity in post mortem muscle and its relation to cattle handling practices |
Autor: | Fuente-García, Claudia; Aldai, Noelia CSIC; Sentandreu, Enrique CSIC ORCID ; Oliván, Mamen; Franco, Daniel; García-Torres, Susana; Barron, Luis Javier R.; Sentandreu, Miguel Ángel | Palabras clave: | Caspases Cell death Apoptosis Animal management Bos taurus Meat quality |
Fecha de publicación: | 3-may-2021 | Editor: | John Wiley & Sons | Citación: | Journal of the Science of Food and Agriculture 101 (15): 6258-6264 (2021) | Resumen: | BACKGROUND: Animal handling practices are one of the factors majorly affecting animal metabolism prior to slaughter. This phenomenon increases the occurrence of meat quality defects such as dark cutting-beef, causing high economical losses in the meat industry. Under this framework, the assessment of apoptosis onset in post mortem muscle was proposed as a novel approach to reveal biochemical characteristics in several Spanish bovine breeds (Asturiana de los Valles, Retinta and Rubia Gallega) managed under different production systems (intensive versus semi-extensive) and transport/lairage conditions (mixing versus not mixing with unfamiliar animals). To do so, the activities of initiator caspase 9 and executioner caspases 3/7 were determined in Longissimus thoracis et lumborum muscle at three early post mortem times (2, 8, and 24 h). RESULTS: Breed effect and transport/lairage conditions were the most relevant factors that influenced both caspase activities over post mortem time, showing Rubia Gallega breed a completely different behavior compared to Asturiana de los Valles and Retinta breeds. Moreover, it is postulated that apoptosis cascade is initiated via the activation of caspase 9 under hypoxic or metabolic stress followed by the activation of executioner caspases 3/7. CONCLUSIONS: Assessment of apoptosis on post mortem muscle can be a novel approach to study the influence of animal handling on muscle metabolism and post mortem cell death and its consequences on meat quality traits. | Versión del editor: | https://doi.org/10.1002/jsfa.11293 | URI: | http://hdl.handle.net/10261/244405 | DOI: | 10.1002/jsfa.11293 | ISSN: | 0022-5142 |
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