Fermentation parameters, quality and losses in sugarcane silages treated with chemical additives and a bacterial inoculant

Abstract

The objective of this trial was to evaluate chemical additives and a bacterial inoculant on the inhibition of alcoholic fermentation and reduction of losses in sugarcane silages. Treatments were (doses on a fresh forage basis): without additive (control); urea (10 g/kg); urea (5 g/kg) + sodium benzoate (0.5 g/kg); sodium benzoate (1 g/kg); urea + ammonium sulfate in a 9:1 relation (10 g/kg); Lactobacillus buchneri (5 × 10(4) cfu/g). Silages were produced in 10.16- × 30-cm PVC tubes, provided with tight lids adapted with Bunsen valves for gas losses quantification. Minisilos were opened 139 days after ensiling. Ethanol content (227 g/kg dry matter - DM) and total DM loss (30%) were high in the control silage. All additives, except benzoate, decreased ethanol concentration in silages. Inoculation with L. buchneri increased acetic acid content in the silage, resulting in a 41% reduction in ethanol content and the lowest gas loss among treatments (15.2%). There was synergistic effect between additives for the combined use of urea and benzoate. Silage treated with urea + ammonium sulfate has higher content of total digestible nutrients than the silage treated with urea exclusively

Chemical composition, fermentation profile and apparent digestibility of sugarcane silage treated with chemical additives

“…The acetic acid content was high but butyric and propionic acids concentrations were within levels reported in the literature (Pedroso et al, 2011;sChmidt et al, 2011). Silages treated with additives also had adequate pH and relatively low concentrations of lactic acid, with exception of the silage treated with calcium oxide, which had a high content of that acid (Table 3).…”

“…The application of urea combined with sodium benzoate was first evaluated by Pedroso et al (2011) in an attempt to improve efficiency since previous results with both additives were to variable. Those authors reported the occurrence of a synergistic effect between these additives but the consistency of that effect and the possibility that other levels of combination might be more efficient still need to be evaluated.…”

Silagem De Cana-De-Açúcar Tratada Com Inoculantes Microbianos E Suas Misturas

“…Silagem de cana-de-açúcar tratada com inoculantes microbianos e suas misturas (1982) observaram teor médio de 5,6% na MS para a concentração de ácido lático. Pedroso et al (2011) verificaram concentração média de ácido lático de 6,74% na MS para silagem de cana-de-açúcar.…”

Efecto de aditivos químicos en la composición del ensilado de avena ("Avena sativa" L)

“…En este experimento se constató que el BS aplicado solo o en combinación con la urea (UR + BS) propició contenidos similares de FND y FAD en relación al ensilado sin aditivos. Pedroso et al (2011) al aplicar 0.5 g/kg de BS a la caña de azúcar en el momento del ensilaje no lograron reducir la fermentación alcohólica. Sin embargo, este aditivo permitió mejorar el valor nutritivo del ensilado (menor contenido de FND y lignina) en relación al ensilado sin BS.…”

“…Entre estos aditivos destacan la urea (Hill y Leaver, 2002, citado por Siqueira et al 2010) y el benzoato de sodio (Pedroso et al, 2007, Pedroso et al 2011. La urea se mezcla frecuentemente con el sulfato de amonio en una relación 9:1 para alcanzar el equilibrio adecuado de nitrógeno-azufre en dietas para animales rumiantes (Ferreiro et.…”