-Corn and sorghum are standard silage crops because of their fermentative characteristics. While corn and sorghum silages have lower crude protein (CP) contents than other crops, intercropping with legumes can increase CP content. Furthermore, one way to increase CP content is the addition of legumes to silage. Consequently, the research objective was to evaluate the fermentative and bromatological characteristics of corn (Zea mays) and sorghum (Sorghum bicolor) silages added with forage peanuts (Arachis pintoi). The experimental design was completely randomized with four replicates. The treatments consisted of corn silage, sorghum silage, forage peanut silage, corn silage with 30% forage peanut, and sorghum silage with 30% forage peanut. The results showed that the corn and sorghum added with peanut helped to improve the silage fermentative and bromatological characteristics, proving to be an efficient technique for silage quality. The forage peanut silage had lower fermentative characteristics than the corn and sorghum silages. However, the forage peanut silage had a greater CP content, which increased the protein contents of the corn and sorghum silages when intercropped with forage peanuts. Keywords:Additive. Arachis pintoi. Sorghum bicolor. Zea mays. QUALIDADE DA SILAGEM DE MILHO E SORGO ADITIVADA COM AMENDOIM FORRAGEIRORESUMO -O milho e o sorgo são considerados culturas padrão para ensilagem, em virtude de suas características fermentativas. No entanto, silagens de milho e sorgo apresentam teores de proteína bruta inferiores aos de outras culturas. E uma das formas para aumentar a proteína bruta é a adição de leguminosa na ensilagem. Diante disso, objetivou-se avaliar as características fermentativas e bromatológicas da silagem de milho (Zea mays) e sorgo (Sorghum bicolor) aditivada com amendoim forrageiro (Arachis pintoi). O delineamento experimental foi o inteiramente casualizado, com quatro repetições. Os tratamentos foram constituídos de silagem de milho; silagem de sorgo; silagem de amendoim forrageiro; silagem de milho com 30% de amendoim forrageiro e silagem de sorgo com 30% de amendoim forrageiro. Os resultados demonstraram que a silagem de milho e sorgo aditivada com amendoim forrageiro, contribuiu para melhorar os parametros fermentativos e bromatológicos da silagem, mostrando ser uma técnica eficiente para a qualidade da silagem. A silagem de amendoim forrageiro apresentou caracteríticas fermentantivas inferiores a silagem de milho e sorgo, em contrapartida apresentou maior teor de PB, que contribuiu para aumentar o teor protéico das silagens de milho e sorgo. Palavras-chave:Aditivo. Arachis pintoi. Sorghum bicolor. Zea mays.

The goal of this study was to evaluate the fermentative and bromatological characteristics of Piata palisadegrass (Brachiaria brizantha cv. Piata) ensiled with levels of meals from biodiesel industry. The experiment was performed at the Federal Institute of Goias State, Campus Rio Verde. The experiment was a completely randomized design with four replications, in 4 x 4 factorial arrangement, being four meals (cotton, sunflower, soybean, and canola) and four levels of inclusion (0, 5, 10 and 15%). The results showed the oleaginous meals from biodiesel industry are indicated as additives for ensiling Piata palisadegrass, by improving the qualitative, nutritional and fermentative characteristics of the Piata palisadegrass silage. It is recommended the addition of 15% of the meals, since this level provides the best quality of silage. The soybean meal is the most effective to improve the silage quality, in comparison with the other additives. Key words: Additive, Brachiaria brizantha, crude protein, fibrous materials ResumoDesenvolveu esse estudo com o objetivo de avaliar as características fermentativas e bromatológicas do capim-piatã ensilado com níveis de farelos da indústria do biodiesel. O experimento foi conduzido no Instituto Federal Goiano, Campus Rio Verde. O delineamento experimental utilizado foi o inteiramente casualizado, com quatro repetições, em esquema fatorial 4 x 4, sendo quatro farelos (algodão, girassol, soja e canola) e quatros níveis de adição (0, 5, 10 e 15%). Os resultados demonstraram que os farelos da indústria do biodiesel pode ser indicado como aditivos para a ensilagem, por trazer melhorias nas características fermentativas, qualitativas e nutricionais da silagem de capim-piatã. Recomenda-se a adição do nível de 15% dos farelos, por proporcionar melhor qualidade da silagem. O farelo de soja mostrou-se mais eficiente para melhorar a qualidade da silagem, quando comparados com os outros aditivos. Palavras-chave: Aditivo, Brachiaria brizantha, fração fibrosa, proteína bruta

The objectives of this study were to evaluate the fermentative and bromatological characteristics of Piata palisadegrass that was ensiled with energetic brans and to assess the costs of different additive levels. This experiment was conducted at the Goiano Federal Institute on the Rio Verde campus in Goiás State, Brazil. The experimental design was entirely random with four replications in a 4 × 5 factorial scheme that included four energetic brans (millet, maize, sorghum and wheat) and five levels (0%, 8%, 16%, 24% and 32%). The energetic brans can be considered as a good source of additives for Piata palisadegrass ensiling, which improves the qualitative and nutritional fermentative characteristics of the silage. The maize and wheat brans were the most efficient for improving the fermentative characteristics of the silage. However, millet bran was the most efficient for improving the bromatological characteristics. In addition, the wheat bran had the greatest influence on the final production cost and the sorghum and millet brans were the most economically feasible. Overall, the addition of 24% bran is recommended due to its beneficial impact on silage quality and the average final production cost of the silage.

This study determined the fractionation of protein and carbohydrate of Piata palisadegrass ensiled with energetic meals. The experiment was developed at the Federal Institute of Goiás State, Rio Verde Campus, using a completely randomized design with four replications, in a 4 x 5 factorial arrangement, being four energetic meals (millet, corn, sorghum and wheat) and five levels of addition (0, 8, 16, 24 and 32%). The meals were obtained by grinding the grains, where the levels of addition were calculated based on natural material. The results indicated that the energetic meals represented good sources of additives for ensiling Piata palisadegrass, for considerably improving protein and carbohydrate fractions. However, among the meals used, the sorghum was less efficient by presenting a lower protein fraction (A) and higher fraction C, compared with other additives. The meals of wheat and sorghum showed higher contents of carbohydrate fractions (A+B1 and C). It is recommended the level of addition of 24% of meals, for providing better nutritional value to silage.