Parámetros bioquímicos y hematológicos en ovinos de pelo con y sin sombra bajo condiciones desérticas
DOI:
https://doi.org/10.19136/era.a5n14.1544Resumen
RESUMEN. El objetivo del estudio fue determinar el efecto del uso de sombra en corderas de pelo bajo condiciones de estrés calórico sobre parámetros bioquímicos y hematológicos. Veinte corderas de pelo de cruza Dorper x Pelibuey fueron asignadas de forma aleatoria a uno de dos tratamientos: 1) corderas en corraletas individuales cubiertas con sombra (CS, n=10); y 2) corderas en corraletas individuales sin acceso a sombra (SS, n=10). Se tomaron muestras de sangre por punción de la vena yugular, la colecta se realizó durante la mañana (6:00 h), cada tercer día durante los 16 d del estudio. Los parámetros hematológicos se determinaron en muestras de sangre fresca, mientras que los metabolitos y electrolitos se determinaron en muestras de suero. Los datos se analizaron con un diseño de bloques al azar. Las corderas CS presentaron menor (p < 0.05) concentración de colesterol y triglicéridos que las corderas SS. Las concentraciones de K y Cl fueron mayores (p < 0.05) para el grupo SS en relación con el grupo CS. Las corderas CS presentaron mayor (p < 0.05) concentración de plaquetocrito, volumen corpuscular medio, hemoglobina corpuscular media y ancho de distribución eritrocitaria, pero menor concentración de hemoglobina en relación a corderas SS. Los resultados muestran que los ovinos de pelo tienen capacidad de adaptación a altas temperaturas, ya que dado el tiempo de exposición al calor, no se observaron cambios importantes en los componentes hematológicos y bioquímicos.
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