Abstract
ABSTRACT The sugarcane has a high content of soluble carbohydrates, thereby resulting in many losses during its fermentation. Thus, it is necessary to use an additive that reduces the losses in the nutritional value of the forage during the ensiling process. The objective was to evaluate the use of common bean residue during the sugarcane ensiling process over the silage nutritional quality and fermentation characteristics. Were used 20 silos made of PVC pipes, in which the residue of crude and previously ground common bean processing (Phaseolus vulgaris L.) were added to newly chopped sugarcane in the proportions of 0; 50; 100 and 150 g kg-1 of fresh weight. A randomized design was used and the regression analysis was performed according to the level of common bean residue in silages. The losses from the ensiling process, the aerobic stability of the material, and the silage chemical composition, pH, NH3-N and in vitro dry matter digestibility were analyzed. The inclusion of increasing levels of common bean residue until 150 g kg-1 improved the quality of silages, since there was a reduction in gaseous losses, improvement in food composition and in vitro dry matter digestibility, without impairing the silages pH. The common bean residue can be used as additive in sugarcane silage until 150 g kg-1 fresh weight for improving silage fermentation characteristics and dry matter digestibility.
Highlights
The high potential production of dry matter and energy per unit area arouses the interest of producers to use the sugarcane (Saccharum spp.) in ruminant feed
In this study we aimed to evaluate the inclusion of residue from the processing of the common bean (Phaseolus vulgaris L.) as additive during ensiling of sugarcane (Saccharum spp.) on the quality of the silage mass
We used a variety of sugarcane RB 867515 aged 12 months, with chemical composition shown in Table 1, which was manually harvested during the dry season, peeling it to remove the dried leaves, as it is typically done when this fodder is provided in natura to animals
Summary
The high potential production of dry matter and energy per unit area arouses the interest of producers to use the sugarcane (Saccharum spp.) in ruminant feed. The use of forage in natura has a very high operating cost due to the need for daily hand labor. The silage is presented as an alternative process to the daily cutting process to supply the forage in natura form (SÁ NETO et al, 2013). The ensiling of sugarcane is an excellent operational solution. It results in increased production of ethanol due to the high content of non-fibrous carbohydrates, represented almost exclusively by soluble carbohydrates, which favors the yeast proliferation during the fermentation process (DANIEL et al, 2013). One should consider the possibility of using additives during ensiling that favor fermentation, improve the nutritional value of the silage mass and allow greater aerobic stability after opening the silo
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