Qualitative parameters of sugarcane silages treated with urea and calcium oxide

• Published in: Semina. Ciências agrárias : revista cultural e científica da Universidade Estadual de Londrina Vol. 36; no. 2; pp. 1135 - 1144
• Main Authors: Martins, Susi Cristina dos Santos Guimarães, Carvalho, Gleidson Giordano Pinto, Pires, Aureliano José Vieira, Silva, Robério Rodrigues, Leite, Laudi Cunha, Pereira, Fabiano Matos, Mota, Álvaro Diego Soares, Nicory, Isis Miranda Carvalho, Cruz, Cláudia Horne da
• Format: Journal Article
• Language: English
• Published: Universidade Estadual de Londrina 22-04-2015
• Subjects: Chemical additives; Dry matter recovery; Ensiling
• ISSN: 1676-546X; 1679-0359
• DOI: 10.5433/1679-0359.2015v36n2p1135

The objective was to evaluate the fermentation parameters, chemical composition and fractionation of carbohydrates of sugarcane silages treated with urea and calcium oxide (CaO). Upon ensiling, the treatments applied to the sugarcane were: 1% urea; 0.5% urea + 0.5% CaO; and 1% CaO, in relation to a control silage, without additive. The chemical additives (urea and CaO) were added at ensiling, in an amount calculated based on the fresh matter (as is). A completely randomized design consisting of four treatments (silages) and nine replicates was adopted. The material was conditioned in PVC mini-silos for five months. At the end of the storage period, silos were weighed again and samples were collected to quantify the losses caused by fermentation, dry matter recovery, pH, and ammonia nitrogen (N-NH3) of the silages and to evaluate the chemical composition and fractionation of carbohydrates. The silage with 1% CaO showed the highest recovery of dry matter, and in terms of carbohydrate fractionation, it showed the highest levels of soluble and potentially soluble carbohydrates. Addition of 1% CaO during ensiling reduces the fermentation losses of sugarcane silages.