Detoxificación de nitrato usando antioxidantes y probióticos en el agua para conejos
DOI:
https://doi.org/10.17533/udea.rccp.v31n2a06Palabras clave:
aditivos, nutrición animal, composición y calidad del agua, polución del agua, purificación del aguaResumen
Antecedentes: Las prácticas agrícolas aumentan la polución de aguas subterráneas con nitratos. Una alta ingestión de nitratos posiblemente afecta negativamente el crecimiento animal. Objetivo: Determinar los efectos de diferentes niveles de nitrato en el agua de bebida sobre las funciones digestivas, hepáticas y renales, ingestion de agua y alimento, y determinar la habilidad de la vitamina C, vitamina E + Selenio (Se) o probióticos en superar los efectos del nitrato en conejos Nueva Zelanda Blanco. Métodos: Cuarenta y dos conejos machos se distribuyeron al azar entre seis tratamientos: 1) grupo control (sin nitrato), 2) 350 ppm nitrato, 3) 700 ppm nitrato, 4) 700 ppm + 200 ppm vitamina C, 5) 700 ppm + 200 ppm vitamina E + Se, y 6) 700 ppm + 1000 ppm probiótico. Se evaluó el desempeño productivo, las funciones digestivas, hepáticas y renales, y la histología renal y hepática. Resultados: La ingestión de 350 ppm de nitrato disminuyó (p<0,05) la ingestion de agua. Los conejos que consumieron 700 ppm de nitrato presentaron menor (p<0,05) ingestión de materia seca y digestibilidad de nutrientes, y mayor (p<0,05) ingestión de agua y nitrato, concentración de urea, y mayores actividades de aspartato aminotransferasa (AST) y alanina aminotransferasa (ALT). Las vitaminas C, E + Se y el probiótico mejoraron (p<0,05) el consumo de alimento y la digestibilidad de nutrientes, y redujeron (p<0,05) la ingestión de agua y nitrato, la concentración de urea, y las actividades de AST y ALT. Conclusión: Los conejos pueden tolerar hasta 350 ppm de nitrato, pero 700 ppm de nitrato afectan negativamente las funciones digestivas, hepáticas y renales, las cuales mejoran con la suplementación de vitamina C, vitamin E + Se y del probiótico.
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