Avaliação do efeito da substituição de silagem de milho por ração extrusada de fibra de cana em ovinos

Abstract

The objective was to evaluate food digestibility, dry matter intake, ingestive behavior and metabolic profile of ewes fed with extruded roughage instead silage. Twenty animals were used, with an average 54.5kg. The treatments consisted: 80%F:20%S; 60%F:40%S; 40%F:60%S; 20%F:80%S; and 100%S. Food, leavings, feces, urine, ingestive behavior and blood metabolites were evaluated. The variables DMI%BW and DMI(BW0.75) showed a negative linear response. There was positive linear response for RUM and CHEWING, negative linear response for IDLENESS, ERUM, EING and ECHEW and quadratic response for ING. Uric acid showed a statistical difference between treatments. It is concluded that the replacement corn silage by Foragge® extruded roughage can be done in up to 80%.