The aim of this study was to assess the nutritional value of maize silage (EMz) enriched with Saccharomyces cerevisiae (Sc) and quantify in vitro gas production and rumen degradation in situ. The treatments were T0: EMz, T1: EMz + 10% Sc, T2: EMz + 20% Sc. The content of neutral detergent fiber (NDF) and acid detergent fiber (ADF) showed a linear decreasing trend with respect to the increase in Sc levels and it was lower in T1 and T2 compared to T0. The digestibility of organic matter and metabolizable energy (ME) showed a linear downward trend as Sc levels were added. The lowest in vitro gas production corresponded to T1 (118.75 ml gas/0.5 g FDM). The greater amount of soluble fraction degraded in situ was evidenced in T2 (328.12 g/kg MS), also showing an increasing linear trend with the addition of Sc. It is concluded that the enrichment with 20% of Sc in the elaboration of EMz showed ...

The objective of this study was to evaluate the in vitro antimicrobial effect of eucalyptus essential oil (Eucaliptus spp) on Escherichia coli ATCC® 11229 and Staphylococcus aureus subsp. aureus ATCC® 25904. Concentrations of 30, 60 and 90% were evaluated in dilution in 96.8% ethanol. The Minimum Inhibitory Concentration (MIC) was determined by the broth microdilution method. The bacterial inoculum was standardized to 0.5 of the MacFarland scale in spectrophotometer, obtaining as a result that the concentrations of 60 and 90% did not present turbidity. The Minimum Bactericidal Concentration (MBC) determined in Mueller-Hinton agar was present from the 60% concentration for the two strains under study. The antimicrobial susceptibility test indicated that all concentrations showed antimicrobial sensitivity and that the concentrations at 30 and 60% were not significantly different, present...

The objective of this study was to evaluate the in vitro antimicrobial effect of eucalyptus essential oil (Eucaliptus spp) on Escherichia coli ATCC® 11229 and Staphylococcus aureus subsp. aureus ATCC® 25904. Concentrations of 30, 60 and 90% were evaluated in dilution in 96.8% ethanol. The Minimum Inhibitory Concentration (MIC) was determined by the broth microdilution method. The bacterial inoculum was standardized to 0.5 of the MacFarland scale in spectrophotometer, obtaining as a result that the concentrations of 60 and 90% did not present turbidity. The Minimum Bactericidal Concentration (MBC) determined in Mueller-Hinton agar was present from the 60% concentration for the two strains under study. The antimicrobial susceptibility test indicated that all concentrations showed antimicrobial sensitivity and that the concentrations at 30 and 60% were not significantly different, present...