Composição bromatólogica e ocorrência de fungos no armazenamento de feno de capim Vaquero

• Autor(a) principal: Hunoff, Camila Andrine
• Data de Publicação: 2015
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações do UNIOESTE
• Texto Completo: http://tede.unioeste.br:8080/tede/handle/tede/1557
• topic: Armazenamento; Carboidratos solúveis; Dupla face; Galpão fechado; Heating, storage; Soluble carbohydrates; Double-sided; Closed shed; CIÊNCIAS AGRÁRIAS:ZOOTECNIA

Two experiments were conducted in order to evaluate the storage conditions of the Bermuda grass for hay production. In the first experiment was evaluated the storage period on the nutritional composition in the internal and external portions of Bermuda grass bales for 64 days. The experimental design was a randomized complete block in a split-plot arrangement so that in the main plots were allocated the four storage environments on field under clear plastic canvas, double-sided canvas and without canvas and covered shed with side walls and in the split-plots the four periods 20, 30, 34 and 64 days with 5 replications. There was a significant difference, in the storage conditions in the inner portion of the Bermuda grass bale, for CP, NDIP, NDF, hemicellulose and soluble carbohydrates content presenting higher values for closed shed and double-sided canvas. On the external portion of the bale, there was a significant difference, only to soluble carbohydrates content in closed shed conditions and double-sided canvas, with concentrations of 33.31 dag/Kg of DM to 27.05 dag/Kg of DM respectively. Regarding the storage time, there was a linear and quadratic effect on DM, MM, CP, ADIP, NDIP, NDF, cellulose, and soluble carbohydrates, decreasing after 34 days of storage and extending throughout the experimental period. In turn there was a linear increase to the levels of lignin and hemicellulose, rising throughout the experimental period. In a second experiment was evaluated the occurrence of mold in Bermuda grass hay in the inner and outer portion of the bales in four storage conditions: on field under clear plastic canvas, double-sided canvas and without canvas and covered shed with side walls, using a randomized block design with split-plots, in the main plots the four storage environments were assigned and in the split-plots the four periods: before baling, 20, 34 and 64 days with five replications. It was observed mold growth in Bermuda grass in all environment studied, with marked population of Aspergillus and Penicillium throughout the experimental period. In all storage conditions assessed the bale temperature was always greater than or equal to the room temperature. However the hay stored on field without canvas, showed higher moisture 22% with high temperatures above 45°C, causing heating of the stored hay and thus showing not be the best choice to producers when storing hay