Efecto de la edad de corte en la composición química y la digestibilidad in vitro del ensilaje de tres híbridos de maíz blanco cultivados bajo riego
DOI:
https://doi.org/10.34188/bjaerv8n4-057Palavras-chave:
ensilaje, maíz, híbridos, matera seca, digestibilidadResumo
Para determinar la influencia de la edad al corte en la composición química y la digestibilidad del ensilado de tres híbridos de maíz blanco (Asgrow 7573, DowDas 2308 y Pioneer 3254W) cultivados bajo riego, se realizó un experimento donde los híbridos fueron asignados aleatoriamente a cinco tiempos de corte (113, 117, 121, 125 y 129 d). Las plantas se cortaron a 12 cm sobre el suelo y se picaron a un tamaño de 3 cm; se prepararon mini ensilajes (5 kg) en bolsas plásticas a las que se les extrajo el aire. Los ensilajes se abrieron después de 45 días, y se determinó la MS, cenizas, PC, FDN, FDA y pH. Los resultados se analizaron por ANOVA para un diseño de bloques completamente al azar con un arreglo factorial 3 x 5. La MS de las plantas de los tres híbridos y sus ensilajes se elevó (p < 0.01) a medida que aumentó la edad de corte. El contenido de PC disminuyó (p < 0.01) al aumentar la edad de corte. Los valores de FDN, FDA y hemicelulosa disminuyeron al aumentar la edad de la planta (p < 0.01). En conclusión, el corte entre los días 117 y 125 mejora la composición química del ensilado de maíz blanco de los tres híbridos estudiados.
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