Patrón de consume y consume selectivo de ganado vacuno alimentado con diferentes fuentes de maíz en un confinamiento

Intake pattern and feed sorting of beef cattle fed different sources of corn in a feedlot

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Matheus Silva Rodrigues
Instituto Federal de Educação, Ciência e Tecnologia Goiano (Campus Iporá), Iporá, Goiás State, Brazil
Rowberta Teixeira dos Santos
Instituto Federal de Educação, Ciência e Tecnologia Goiano (Campus Iporá), Iporá, Goiás State, Brazil
Lorena Martins Oliveira
Instituto Federal de Educação, Ciência e Tecnologia Goiano (Campus Iporá), Iporá, Goiás State, Brazil
Eduardo de Carvalho
Instituto Federal de Educação, Ciência e Tecnologia Goiano (Campus Iporá), Iporá, Goiás State, Brazil

Resumen

El objetivo de este experimento fue determinar el patrón de consumo y consumo selectivo de 30 machos Nelore terminados en un confinamiento y alimentados con dietas basadas en tres fuentes diferentes de maíz: ensilaje de cosecha entera (ECE), maíz de alta humedad (MAH) o maíz en grano (MG). El patrón de consumo y consumo selectivo fueran determinados a los 13, 27, 41, 55, 69 y 83 días después del inicio del experimento en tres tiempos después del inicio de la alimentación (4, 10 y 24 horas). Las dietas fueran separadas por tamaño utilizando tres cribas (19, 8 y 4 mm) y una cubeta inferior para obtener partículas largas (>19 mm), medianas (<19, >8 mm), cortas (<8, >4 mm) y muy cortas (<4 mm). El consumo selectivo se calculó mediante el consumo real de la materia seca (MS) de cada tamaño de partícula expresado como una % de la ingesta teórica de MS del tamaño de partícula correspondiente. No hubo respuesta (p>0.05) de la fuente de maíz sobre el patrón de consumo de alimento. Independientemente de la fuente de maíz, los animales expresaron una preferencia por las partículas largas (104.01% para ECE, 126.99% para MAH y 132.58% para MG) y medias (116.66% para ECE, 109.95% para MAH y 135.14% para MG) de las dietas, lo que puede ser un aspecto beneficioso en términos de la motilidad ruminal, así como también para mantener el pH ruminal en un nivel adecuado.

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Matheus Silva Rodrigues, Instituto Federal de Educação, Ciência e Tecnologia Goiano (Campus Iporá), Iporá, Goiás State, Brazil

Instituto Federal de Educação, Ciência e Tecnologia Goiano (Campus Iporá), Iporá, Goiás State, Brazil

Rowberta Teixeira dos Santos, Instituto Federal de Educação, Ciência e Tecnologia Goiano (Campus Iporá), Iporá, Goiás State, Brazil

Instituto Federal de Educação, Ciência e Tecnologia Goiano (Campus Iporá), Iporá, Goiás State, Brazil

Lorena Martins Oliveira, Instituto Federal de Educação, Ciência e Tecnologia Goiano (Campus Iporá), Iporá, Goiás State, Brazil

Instituto Federal de Educação, Ciência e Tecnologia Goiano (Campus Iporá), Iporá, Goiás State, Brazil

Eduardo de Carvalho, Instituto Federal de Educação, Ciência e Tecnologia Goiano (Campus Iporá), Iporá, Goiás State, Brazil

Instituto Federal de Educação, Ciência e Tecnologia Goiano (Campus Iporá), Iporá, Goiás State, Brazil

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