Effect of level of dietary soluble fibre and threonine on digestion and growth performance in post-weaning rabbits

Castillo Martínez, Cecilia Alexandra
Carabaño Luengo, Rosa (dir.) ; García Alonso, Javier (dir.)

Guada Vallepuga, José Antonio (ponente)

Universidad de Zaragoza, VET, 2013
Producción Animal y Ciencia de los Alimentos department, Producción Animal area

Máster Universitario en Nutrición Animal

Abstract: The aim of this work was to study the effect of soluble fibre and threonine deficiency on digestion and performance after weaning in rabbits. Four diets in a 2 x 2 factorial arrangement were used with two level of soluble fibre (89 vs.119 g/kg) and two level of threonine (5 vs. 6.4 g/kg). Two experiments were conducted with rabbits weaned at 25 (35/diet) and 35 (32/diet) d of age to determine apparent ileal (at 35 and 46 d) and faecal digestibility, intestinal mucin concentration, mucosa morphology and growth traits. The increase of soluble fibre improved intestinal mucosa integrity and mucin secretion leading to a better health status of the rabbits when the sanitary conditions worsened. Mucosa barrier traits were not affected by dietary threonine level although in poor sanitary conditions a low threonine level impaired rabbit health suggesting a limiting status of this amino acid.

Free keyword(s): soluble fibre ; threonine ; digestibility ; mucin production ; morphology of the intestinal mucosa

Tipo de Trabajo Académico: Trabajo Fin de Master