This study evaluated the dry matter production and chemical composition of Brachiaria forage grasses in the offseason after corn harvest in integrated crop-livestock system. The experiment was conducted at the Federal Institute of Goiás, Rio Verde Campus, using a randomized complete block experimental design, with four replications. The treatments consisted of the forages: Brachiaria brizantha cv. Marandu; Brachiaria brizantha cv. Xaraes; Brachiaria brizantha cv. Piata; Brachiaria brizantha cv. MG-4; Brachiaria decumbens and Brachiaria ruziziensis, intercropped in oversown corn for implantation of integrated crop-livestock system. The results showed that intercropping corn with Brachiaria grasses favors the production of high-quality forage in the offseason, and the cultivars of Brachiaria brizantha and Brachiaria decumbens showed higher dry matter production. And cultivars of Brachiaria brizantha (Marandu palisadegrass, Xaraes palisadegrass and Piata palisadegrass) are the most suitable for presenting food of better quality, compared with Brachiaria brizantha cv. MG-4, Brachiaria decumbens and Brachiaria ruziziensis.

-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.

Paiaguas palisadegrass was released in order to meet the requirements of the different production systems. However, little is known about the quality of the forage. The goal of this study was to evaluate the protein and carbohydrate fractionation of the Paiaguas palisadegrass after intercropping with grain sorghum in the pasture recovery, through the integration of crop and livestock production. The experiment was conducted in the municipality of Rio Verde, State of Goias. The experimental design was a randomized complete block design with four replications. The treatments were composed of the following forage systems: Paiaguas palisadegrass in monocropped, sorghum intercropped with Paiaguas palisadegrass in the row, sorghum intercropped with Paiaguas palisadegrass in the interrow, and sorghum intercropped with oversown Paiaguas palisadegrass. The evaluations were carried out in the four climatic seasons of the year (winter, spring, summer, and fall) in the same plots, over a period of one year, in 16 paddocks under continuous stocking system. The results showed that forage systems did not influence protein and carbohydrate fractionation. The winter season presented higher values of protein and carbohydrate fractionation, negatively affecting the animal performance.

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

Pastures are the most practical and cost-effective way to feed cattle and are the basis of livestock production in Central Brazil. Grass–legume intercropping is essential for increasing production in sustainable animal-feeding systems. The aim of the present study was to evaluate the productive and nutritional characteristics of Brachiaria brizantha (A.Rich.) Stapf (palisade grass) cultivars intercropped with Stylosanthes cv. Campo Grande (multiline 80% S. capitata and 20% S. macrocephala) in different forage systems, in different seasons of the year, over a 2-year period. A randomised block experimental design was used, with three replicates. The treatments consisted of the following seven forage systems: Piata palisade grass, Paiaguas palisade grass, Stylosanthes cv. Campo Grande, row intercropping of Piata palisade grass and Stylosanthes, mixed intercropping of Piata palisade grass and Stylosanthes, row intercropping of Paiaguas palisade grass and Stylosanthes, and mixed intercropping of Paiaguas palisade grass and Stylosanthes. Evaluations were performed in each season of the year (winter, spring, summer, autumn) on the same plots over the 2-year period. Piata and Paiaguas palisade grass behaved similarly in all forage systems, indicating that both can be intercropped with Stylosanthes. Grass–legume intercropping had a positive effect on the productive and nutritional characteristics of the forage plants, increasing dry matter production, crude protein concentrations and in vitro dry matter digestibility, and decreasing the fibre fractions. Row intercropping was more efficient at maintaining high proportions of legume plants in the system, resulting in greater forage production and quality.