Caracteristicas fermentativas de silagens de capim elefante (Pennisetum purpureum schum) com diferentes niveis de inclusão do resíduo de fécula de mandioca

Abstract

The objective of this study was to evaluate the fermentative characteristics, aerobic stability and sensory analysis of elephant grass silages (Pennisetum purpureum Schum) with the inclusion of different levels of fecularia residue. The forage used was elephant grass and after the grinding that left it with 4mm, the material was manually compacted in experimental PVC silos. The experimental design was completely randomized with five levels of inclusion of undertaking residue in the natural matter (0%, 10%, 20%, 30% and 40%) With four replications. After 49 days of fermentation, the silos were opened discarding 10 cm initial and then performing the sensory analysis. The sensory test evaluated the silages as "good to very good". The stability was prolonged to the extent that they increased the levels of inclusion of the undertaking residue, with no breakage of stability in the T4 and T5 treatments even after 168 hours. The inclusion of the undertaking residue reduced the losses by gases (0.044%) On T1 for (0.021, 1%) In T5. The residue resulted in an increase in dry matter (37.34 to 55.02%). The residue still provided adequate fermentation pattern according to the pH values located between (3.89 to 4.13). It is recommended to include 30% of cassava starch residue.