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2015, Número 2

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AbanicoVet 2015; 5 (2)


Efecto de la condición corporal de vacas holstein sobre la capacidad para retener agua, colágeno insoluble y esfuerzo de corte en Longissimus dorsi

Mendoza-Carrillo J, Martínez-Yáñez R, Díaz-Plascencia D, Ávila-Ramos F

Idioma: Español
Referencias bibliográficas: 27
Paginas: 19-27
Archivo PDF: 731.20 Kb.


RESUMEN

La condición corporal (CC) es una forma directa para determinar el estado general de las vacas. El objetivo de la investigación fue evaluar el efecto de la condición corporal de vacas Holstein enviadas a rastro sobre la calidad tecnológica del Longissimus dorsi. Se calificaron 180 vacas de 24 a 36 meses de edad con el método de CC, 10 min post mortem se tomó una muestra del músculo Longissimus dorsi (LD) para determinar su capacidad de retención de agua (CRA), esfuerzo de corte (EC) los días 1, 5, 10, 15 y 20 y colágeno Insoluble (CI) por degradación alcalina en mg y %. La CRA, EC y CI se ajustaron a un modelo considerando la condición corporal de las vacas como efectos fijos, se analizó su correlación y la comparación de las medias se realizó con contrastes polinomiales. Los resultados no mostraron diferencia en CRA del músculo Longissimus dorsi en vacas con diferentes CC, no hubo correlación de la CRA con EC, CI y CC. Al aumentar los días de maduración de la carne el EC disminuyó 1, 5, 10, 15 y 20 (P≤0.05) sin efecto de la CC. Los resultados de colágeno Insoluble indican menor cantidad cuando aumenta la CC de las vacas (P≤0.05). En conclusión, la condición corporal de las vacas no fue una medida adecuada para determinar la capacidad de retención de agua y esfuerzo de corte, pero puede tener efecto en la cantidad de colágeno insoluble del Longissimus dorsi.


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