2025-08-282025-08-282023-12-19https://repositorio.ifal.edu.br/handle/123456789/1189The use of forage conservation techniques plays a fundamental role in animal feeding and nutrition, ensuring the supply of quality food during periods of drought. Ensiling is one of the most used techniques for forage conservation, which consists of the anaerobic fermentation of forage, resulting in the production of lactic acid, inhibiting unwanted microorganisms and preserving the quality of the silage. The appropriate selection of the plant to be ensiled plays an extremely important role, as its composition directly influences the quality of the silage. Silage production using elephant grass, gaundu beans and ground corn emerge as efficient nutritional alternatives due to their nutritional composition, favorable cost-benefit, resistance to adverse weather conditions and potential increase in animal productivity. Therefore, the present work aimed to analyze the chemical composition and fermentative parameters of silage produced with different levels of protein using elephant grass cv. BRS Capiaçu, pigeon pea cv. IPA 43 and ground corn, seeking to highlight which treatment has the best bromatological and fermentative quality. The experiment was set up in a Completely Randomized Design (DIC), with four treatments and five replications, totaling 20 experimental plots. Each treatment presented a different protein level, these being 11, 12, 13 and 14% of crude protein (CP). The fermentation profile was evaluated by measuring °Brix, pH, temperature, dry matter losses through gases (PG) and green matter losses through effluents (PE), in bromatological analysis the CP and Dry Matter contents were determined ( MS). The treatment with 14% CP demonstrated better performance in terms of DM, with 31.8% DM, and PG with 5.38% losses. CP analysis did not indicate losses during the fermentation process. Although the temperature showed a significant difference, all treatments remained within the acceptable temperature range according to the literature, with an average of 25.76°C. The parameters pH, °Brix and PE did not show significant differences between treatments, with averages of 4.41, 6.99 and 1.78 Kg/Mg respectively, remaining at levels suitable for making quality silage. The silage formulation presented adequate bromatological and fermentative parameters at all protein levels. The treatment with 14% protein is the most recommended as it presents a greater amount of dry matter and lower gas losses.ptConservação de forragemNíveis de proteínaPerdas por gasesForage conservationProtein levelsGas lossesTrabalho de Conclusão de CursoENGENHARIAS