Perdas fermentativas e estabilidade aeróbia de silagens de cana-de-açúcar tratadas com cal virgem e cloreto de sódio

Abstract

The objective of this work was to determine the inclusion of whitewash and sodium chloride on the fermentative losses and aerobic stability of sugarcane silages. It was used a completely randomized experimental design in split plot scheme with four replicates, so the additives were evaluated in the plots (silage without additive, silages containing 0.5; 1.0 and 2.0% of sodium chloride; and silages containing 0.5; 1.0 and 1.5% of whitewash, on the basis of natural matter) and the time of exposition to oxygen was evaluated in the subplots. After 75 days from ensilage, silos were opened for determination of the contents of dry matter (DM) and the loss of dry matter by effluent and gases and checking of temperature and pH of the silage. The addition of whitewash into silages, regardless to the dose utilized, provides greater DM content and smaller loss of DM. The lowest temperatures were found in the silages treated with sodium chloride. The additives utilized were efficient in keeping the aerobic stability of sugar cane silage, particularly sodium chloride. © 2011 Sociedade Brasileira de Zootecnia.