Óleo de fritura residual na alimentação de ovinos: consumo e digestibilidade

Abstract

This study aimed to evaluate the effect of inclusion of residual frying oil consumption and digestibility of dry matter and nutrients in the diet and nitrogen balance. In consumption test and the apparent digestibility was used 20 Santa Inês lambs, with an average age of 90 days and average body weight of 19.29±3.17 kg, in a completely randomized design. The experimental period lasted 19 days, 14 days of adaptation and five total collection of the diets fed, orts, feces and urine. The total collection of feces was performed on plastic collectors and weighed daily. Urine was collected in plastic buckets and added daily in collectors hydrochloric acid 10%. The animals were housed in individual metabolic cages and fed twice daily with diets based on roughage and concentrate (50:50), while residual oil was included in the diet at concentrations of 0; 2; 4; 6 to 8% of the dry matter of the concentrate. The addition of the residual frying oil had no significant effect (p>0.05) on dry matter (DM), crude protein (CP), organic matter (OM), neutral detergent fiber (NDF), detergent fiber acid (FDA), total carbohydrate (TC), non-fibrous carbohydrate (NFC). However, consumption of lipids (EEC) increased linearly with the inclusion of oil in the concentrate, Y=0.0244 + 0,0051X (p<0.01). Also, there was no effect on the digestibility of DM, CP, OM, NDF, ADF, CNF and TCHO and nitrogen balance. The digestibility of EE increased linearly with the addition of oil in the diet, Y = 83.68 + 1,66X (p<0.01). The inclusion of the residual frying oil in the diet of sheep, in the inclusion of up to 8% of dry matter in the concentrate can be used without damage to the intake and digestibility of nutrients.