<b>Digestibility of nutrients of diets with diferents levels of degradable ruminal protein and source of starch of hight ruminal degradability in lambs</b> - DOI: 10.4025/actascianimsci.v26i4.1742

Abstract

Nutrients apparent digestibility coefficients were evaluated in four diets with diferent levels of Ruminal Degradable Protein (RDP): 47%, 52%, 57%, 62%, using the cassava by- product flour (high ruminal degradability source). Four ovines were used (live weight 61,35kg) ± in a 4X4 Latin square design with four periods of 21 days each. Total collect of feces was used. The animals were accomodated in metabolic cages with dispositives to collect urine and feces. The dates were analysed on SAEG system. There were no effects on intake of: dry matter (DM), organic matter (OM), crude protein (CP), neutral detergent fibre (NDF). A linear effect was observed to the apparent digestibility coeficient (ADC) of DM, equation: ADC MS = 68.6 + 0.022 RDP. There were no observed diferences in the coefficients of digestibility of OM, CP, NDF for the levels of RDP.