Two experimentsusing New Zealand White x Californian rabbits were carried out with the objectiveof evaluating the effect of fiber source particle size on digestive traits ofgrowing rabbit and the production, chemical composition and cecotrophes nutritivecontribuition on dry matter (DM) and crude protein (CP) base. Four diets wereprepared with different particle size of sugar cane bagasse with average geometricdiameters of .231, .506, .616 and .833 mm. The productive performance and weightof the full and empty digestive tract, digestive tract content, full and emptycecum and cecum content were not affected, however the ammonia nitrogen percentagein the caecum content was significantly increased by increasing particle sizeof sugar cane bagasse. In cecotrophy evaluation, effects of particle size oncecotrophes production, DM and CP content ingested were observed, but the cecotropheschemical composition was not affected by diets.
