Adição de própolis ou monensina sódica sobre digestibilidade in vitro da matéria seca em dietas 50:50% volumoso:concentrado e 100% volumoso

The objective was to evaluate the LLOS products, based in propolis, in four propolis concentrations (A, B, C and D – A is less concentrated and D is the most concentrated) and three alcohol levels (1, 2 and 3 – 1 is less concentrated and 3 in the most concentrated), sodium monensina and control diet (without additive) on dry matter in vitro digestibility (DMIVD) in diets with 50% roughage (Star’s hay), 50% concentrated and 100% concentrated (Tifton’s hay). It was used the technique of dry matter in vitro digestibility of one stage. For statistical analysis, STATISTICA system was used in the GLM procedure. Tests were used to contrast the 5% and Tukey's test at 5%. The highest rates of dry matter in vitro digestibility of treatments with 50:50% of roughage:concentrate were for the following combinations of LLOS products: concentration C in alcohol 1 (LLOSC1; 57.37%), concentration D in alcohol 1 (LLOSD1; 56.41 %), concentration A in alcohol 2 (LLOSA2; 56.03%) and concentration C in alcohol 3 (LLOSC3; 56.04%). The highest rates of dry matter in vitro digestibility with 100% of Tifton’s hay were for LLOS products: concentration B in alcohol 3 (LLOSB3; 49.09%), concentration C in alcohol 1 (LLOSC1; 45.49%) and concentration C in alcohol 2 (LLOSC2; 41.50%). For diets with 50% or 100% roughage, it were observed higher values or similar to control and monensin treatments. The release of the active substance in increasing dry matter in vitro digestibility values is not directly proportional to the concentration of propolis and alcohol, being more active in combination with a middle content of total flavonoids in chrysin.