Cómo citar
Romero Peñuela, M. H., Uribe Velásquez, L. F., & Sánchez Valencia, J. A. (2011). Biomarcadores de estrés como indicadores de bienestar animal en ganado de carne. Biosalud, 10(1), 71–87. Recuperado a partir de https://revistasojs.ucaldas.edu.co/index.php/biosalud/article/view/4753

Autores/as

Marlyn Hellen Romero Peñuela
Universidad de Caldas. Manizales
marlyn.romero@ucaldas.edu.co
Luis Fernando Uribe Velásquez
Universidad de Caldas. Manizales
lfuribe@ucaldas.edu.co
Jorge Alberto Sánchez Valencia
Universidad de Caldas. Manizales
jorge.sanchez@ucaldas.edu.co

Resumen

La presente revisión presenta los cambios fisiológicos que presentan los bovinos durante el estrés agudo, así como los biomarcadores sanguíneos utilizados para medir su impacto en el bienestar animal. Durante el presacrificio, el ganado es expuesto con frecuencia a diferentes factores que causan agotamiento físico y estrés fisiológico, los cuales pueden tener efectos adversos para la salud, el bienestar animal y la calidad de la carne. Los más comunes factores son: velocidad y movimientos bruscos del camión, ruido, fuerza centrífuga, ruptura de la estructura social debido a la mezcla de animales, ambiente extraño, manejo rudo de los bovinos durante el cargue y descargue, condiciones climáticas, privación de alimento y agua, entre otros. El estrés ha sido utilizado como un indicador de bienestar animal. Este altera la homeostasis interna de los animales induciendo cambios en la actividad del eje hipotálamo-pituitaria-adrenocortical (HPA) y el sistema simpático-adreno-medular. La activación endocrina promueve la liberación de varias hormonas: catecolaminas, especialmente adrenalina y noradrenalina; hormona liberadora de corticotropina (CRH); hormona adrenocorticotrópica (ACTH) y corticosteroides, principalmente cortisol. Diferentes autores han utilizado distintos constituyentes sanguíneos para determinar el estrés. El cortisol, a pesar de su variabilidad y vida corta, sigue siendo uno de los indicadores más usados. Estos autores también han usado el volumen celular acumulado (VGA), la concentración de glucosa, la actividad de la enzima creatinfosfoquinasa (CK), las concentraciones de B-hidroxibutirato y lactato, como indicadores de estrés. La determinación de estos biomarcadores es un método práctico para monitorear el bienestar animal en ganado bovino de carne.

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