Caspase activity in post mortem muscle and its relation to cattle handling practices

Autor: Daniel Franco, Noelia Aldai, Enrique Sentandreu, Claudia Fuente-García, Mamen Oliván, Miguel Angel Sentandreu, S. García-Torres, Luis Javier R. Barron
Přispěvatelé: Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (España), Ministerio de Ciencia, Innovación y Universidades (España), European Commission, CSIC - Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA)
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Digital.CSIC: Repositorio Institucional del CSIC
Consejo Superior de Investigaciones Científicas (CSIC)
Addi. Archivo Digital para la Docencia y la Investigación
instname
Digital.CSIC. Repositorio Institucional del CSIC
Popis: 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.
Claudia Fuente-Garcia thanks the Department of Economic Development & Infrastructures of the Basque Government for the doctoral fellowship. This work was funded by the Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (RTA2014-00034-C04), Agencia Estatal de Investigación (RTI2018-096162-R-C22) and FEDER funds.
Databáze: OpenAIRE