Aspectos relacionados à produção e armazenamento do feno de Tifton 85 com sobressemeadura de aveia branca IPR 126 e Guapa
Ames, João PauloNeres, Marcela AbbadoCastagnara, Deise DalazenSeidel, Edleusa PereiraHunoff, Camila AndrineDucati, CamilaPiano, Jeferson TiagoJunior Machado, Ivaldir Willian
Structural characteristics, curve dehydration, dry matter production, chemical composition, occurrence of fungi, temperature in the storage of hay bales of Tifton 85 oversowing with long-cycle oat (IPR 126) and oats for short-cycle grains production (Guapa), were evaluated. For chemical composition, the experimental design used was randomized blocks, a split-plot overtime and 3 treatments (single Tifton 85, Tifton 85 with IPR 126 oat oversowing and Tifton 85 in association with Guapa white oat and 3 assessment periods (cutting, baling and 30 days of storage) with 5 repetitions. The dry matter production was higher in single Tifton 85 compared to associations with white oat. The largest stem diameter of guapa white oat contributed to reduce losses of water in the dehydration process, with the hay in this culture system being stored under 800 g kg-1 DM. It was found that the crude protein did not differ between cropping systems, but Tifton 85 hay showed high levels of acid detergent insoluble protein and higher levels of NDF and lignin. The occurrence of fungi was higher after storage predominating fungi of the genus Penicillium.(AU)
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