Abstract

espanolAntecedentes: la cascara de cafe obtenida por procesamiento en seco presenta potencial de uso en la alimentacion de rumiantes. Objetivo: Evaluar la composicion quimica, la degradabilidad in situ de la materia seca (DM) y de la fibra detergente neutra (NDF) de la cascara de cafe tratada con oxido de calcio (CaO) en diferentes condiciones ambientales (EC). Metodos: la cascara de cafe fue sometida a tratamientos distribuidos en un diseno factorial 2 x 2, dos dosis de CaO (0 a 5% en base seca), y dos condiciones ambientales (aerobica y anaerobica) en un diseno completamente al azar con cuatro repeticiones, totalizando dieciseis unidades experimentales. Las muestras de cinco gramos se incubaron en el rumen de dos bovinos machos durante 0, 3, 6, 9, 12, 24, 48, 72, 96 y 120 horas. Resultados: para los parametros cineticos de degradacion de la DM, a excepcion de la fraccion b, la degradabilidad potencial y efectiva fueron afectadas (p EnglishBackground:Coffee hulls obtained from dry processing, have the potential to be used in ruminant diets. Objective: To evaluate the chemical composition and in situ degradability of dry matter (DM) and neutral detergent fiber (NDF) of coffee hulls treated with calcium oxide (CaO) in different environmental conditions (EC). Methods: Coffee hulls were subjected to treatments distributed in a 2 × 2 factorial arrangement, consisting of two levels of CaO (0 and 5%, on a DM basis) and two environmental conditions (aerobiosis and anaerobiosis) in a completely randomized design with four replicates, totaling sixteen experimental units. Five-gram samples were incubated in the rumen of two male cattle for 0, 3, 6, 9, 12, 24, 48, 72, 96, and 120 h. Results:Regarding dry matter degradation kinetic parameters, except for fraction b, the potential and effective degradability was affected (p portuguesAntecedentes: cascas de cafe obtidas pelo processamento a seco tem potencial de serem usadas na alimentacao de ruminantes. Objetivo: avaliar a composicao quimica, a degradabilidade in situ da materia seca (DM) e da fibra em detergente neutro (NDF) da casca de cafe tratada com oxido de calcio (CaO) em diferentes condicoes de ambiente (EC). Metodos: a casca de cafe foi submetida aos tratamentos, distribuidos em esquema fatorial 2 × 2, sendo duas doses de CaO (0 e 5% base da materia seca) e duas condicoes de ambiente (aerobico e anaerobico), em delineamento inteiramente casualizado, com quatro repeticoes, totalizando dezesseis unidades experimentais. Amostras de cinco gramas foram incubadas no rumen de dois bovinos machos, nos tempos 0, 3, 6, 9, 12, 24, 48, 72, 96 e 120 horas. Resultados: para os parâmetros cineticos de degradacao da DM, a excecao da fracao b, a degradabilidade potencial e efetiva foram afetados (p

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