1. Effects of Farm Management Practices and Transport Time on Post-Mortem Changes of Longissimus lumborum Muscle Proteins in Suckling Goat Kids
- Author
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Universidad de Sevilla. Departamento de Ciencias Agroforestales, Universidad de Sevilla. AGR273: Nuevas Tecnologías de Mejora Animal y de Sus Sistemas Productivos, Martínez, Tomás Francisco, Alcalde Aldea, María Jesús, Sáez, María Isabel, Suárez, María Dolores, Universidad de Sevilla. Departamento de Ciencias Agroforestales, Universidad de Sevilla. AGR273: Nuevas Tecnologías de Mejora Animal y de Sus Sistemas Productivos, Martínez, Tomás Francisco, Alcalde Aldea, María Jesús, Sáez, María Isabel, and Suárez, María Dolores
- Abstract
The combined e ect of farm management practices, transport time, and ageing time on the electrophoretic changes of sarcoplasmic (SPP) and myofibrillar (MFP) protein fractions of goat kids was studied. A total of 64 suckling goat kids were withdrawn from two farms with “high” (GW) and “low” (DW) welfare-friendly management practices, and they were transported for 2 or 6 h immediately before slaughtering. Longissimus lumborum samples were obtained at 3, 8, and 21 days post-mortem, and muscle proteins were separated by sodium dodecyl sulfate polyacrylamide gel electrophoresis SDS-PAGE. Both protein extracts displayed significant changes attributable to meat maturation. Managing conditions of kids in DW farms increased the post-mortem susceptibility of muscle proteins. Some MFP of Longissimus lumborum muscle, such as troponin T, as well as 26–30 and 35–37 kDa fractions were influenced significantly by deficient on-farm management, and therefore, these protein fragments might be considered as indicators of low-welfare on-farm management in goat kids.
- Published
- 2020