Título
Effects of xylanase supplementation on feed intake, digestibility and ruminal fermentation in Rambouillet sheep
Autor
LAURA HAYDEE VALLEJO HERNANDEZ
Abdelfattah Zeidan Mohamed Salem
LUIS MIGUEL CAMACHO DIAZ
Ahmed E. Kholif
María Dolores Mariezcurrena Berasain
MOISES CIPRIANO SALAZAR
MARIA UXUA ALONSO FRESAN
Jaime Olivares Pérez
SECUNDINO LOPEZ PUENTE
Nivel de Acceso
Acceso Abierto
Materias
Resumen o descripción
The present study aimed to investigate the effects of adding xylanase enzyme (XY) to a basal diet containing 300 g maize stover and 700 g concentrate/kg dry matter (DM) on feed intake, ruminal fermentation, total tract and ruminal digestibility, as well as some blood parameters. Four male Rambouillet sheep (39 ± 1·8 kg body weight), with permanent rumen and duodenum cannulae were used in a 4 × 4 Latin square design. Sheep were fed a basal diet without xylanase addition (control, XY0), or with the addition of xylanase at 1 (XY1), 3 (XY3) or 6 (XY6) μl/g of diet DM for 84 days, with four 21-day experimental periods. Feed intake, digestibility and rumen fermentation parameterswere determined on days 16–21 in each experimental period, and the apparent ruminal neutral detergent fibre (NDF) digestibilitywas determined on days 16 and 17. Treatments XY1 and XY3 increased feed intake,whereas digestibility was increased with XY6. Ruminal NDF digestibility increased when sheep were fed diets treated with xylanase. Ruminal pH, ammonia-N and acetic acid increased with xylanase treated diets. Propionic acid concentration increasedwith diet XY1 at 3 h post-feeding, but after 9 h post-feeding its concentration decreased in the rumen of sheep fed xylanase treated diets. Xylanase had no effect on blood urea, phosphorus and triglycerides. Addition of xylanase at 6 μl/g DM in a diet containing 300 g maize stover and 700 g concentrate/kg DM and fed to Rambouillet sheep improved feed digestibility and ruminal fermentation without affecting blood parameters.
Editor
Cambridge University Press
Fecha de publicación
6 de abril de 2016
Tipo de publicación
Artículo
Recurso de información
Fuente
1110–1117
Idioma
Inglés
Audiencia
Estudiantes
Investigadores
Repositorio Orígen
REPOSITORIO INSTITUCIONAL DE LA UAEM
Descargas
151