Defatted rice bran digestive utilization by mutation nutria

The digestibility of defatted rice bran (DRB) as a partial substitute of corn in mutation nutria feeding was determined through digestive balance analyses. Substitution rates were 0% (T1); 10% (T2); 20% (T3) and 30% (T4), resulting in a coefficient of digestive use of crude protein of 83.8%; 80.5%; 77.5%; and 79.7% respectively. DRB inclusion in the diet resulted in a significant decrease in protein digestibility. Feed intake was significantly decreased in T2 and T3, while no significant difference was found between T1 and T4. Corn may be replaced by DRB in nutria, but the decrease in protein digestibility can affect productive performance.