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Previous issue date: 2013 === Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) === O estudo foi conduzido na Universidade Federal de Vi?osa, com o objetivo de avaliar as popula??es de microrganismos, as perdas de mat?ria seca, a composi??o bromatol?gica e as caracter?sticas fermentativas de silagens mistas de capim-marandu, com diferentes n?veis de amendoim forrageiro (0; 25; 50; 75 e 100%), com e sem inoculante microbiano Sil All (Alltech do Brasil). Utilizou-se o esquema fatorial 5 x 2 (cinco propor??es de amendoim forrageiro, com e sem inoculante), no delineamento inteiramente casualizado, com tr?s repeti??es. O material foi ensilado em baldes com capacidade de 20 L, providos com v?lvulas de Bunsen, e abertos 60 dias ap?s o fechamento para as avalia??es. Observou-se efeito da intera??o n?vel de amendoim forrageiro e inoculante microbiano sobre pH (P<0,05) e teores de FDNcp (P<0,01), ?cidos l?tico, propi?nico e but?rico, popula??es de fungos + leveduras (P<0,05), produ??o de gases (P<0,01), recupera??o e produ??o total de mat?ria seca. Verificou-se efeito do n?vel de amendoim forrageiro para o pH (P<0,01) e teores de MS, PB, FDA, NIDA, lignina, FDNcp, carboidratos sol?veis residuais, NH3 (P<0,05), ?cidos l?tico (P<0,01), ac?tico, propi?nico e but?rico, popula??es de bact?rias ?cido l?tico (P<0,05) e fungos + leveduras (P<0,01) e sobre a recupera??o e perdas totais de mat?ria seca. O efeito do inoculante foi observado sobre o pH (P<0,01), teores de NIDA, lignina, FDNcp, carboidratos sol?veis residuais (P<0,05), ?cidos l?tico (P<0,01) e propi?nico, e sobre recupera??o e perdas totais de mat?ria seca. Conclui-se que, a adi??o de amendoim forrageiro ao capim-marandu, no momento da ensilagem, aumenta o teor de prote?na bruta e reduz o teor de fibra, bem como proporciona perfil fermentativo adequado e boa recupera??o de mat?ria seca nas silagens. O uso do inoculante microbiano n?o apresenta benef?cios em rela??o ? composi??o bromatol?gica, mas proporciona melhor perfil fermentativo. === Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2013. === ABSTRACT
The study was conducted at the Federal University of Vi?osa, in order to assess the populations of microorganisms, losses of dry matter, chemical composition and fermentation characteristics of silage mixed Marandu grass with different levels of peanut (0, 25 , 50, 75 and 100%), with and without inoculant Sil All (Alltech Brazil). We used a 5 x 2 factorial design (five proportions of peanut, with and without inoculation), in a completely randomized design with three replications. The material was ensiled in buckets with a capacity of 20 liters, fitted with Bunsen valves, and open 60 days after closing for evaluations. We observed a significant interaction between level of peanut and inoculation on pH (P <0.05) and levels of NDF (P <0.01), lactic acid, propionic and butyric acids, yeast fungus populations + (P <0 , 05), gas production (P <0.01), recovery and total production of dry matter. There was no effect on the level of peanut for pH (P <0.01) and DM, CP, ADF, NIDA, lignin, NDF, residual soluble carbohydrates, NH3 (P <0.05), lactic acid ( P <0.01), acetic, propionic and butyric acids, lactic acid bacteria population (P <0.05) + yeasts and fungi (P <0.01) and for total recovery and losses of dry matter. The effect of inoculum was observed on the pH (P <0.01) levels of NIDA lignin, NDF, residual soluble carbohydrates (P <0.05), lactic acid (P <0.01) and propionic, and on Total recovery and losses of dry matter. We conclude that the addition of the peanut Marandu grass at the time of ensiling increases the protein content and reduces the fiber content as well as provides adequate fermentation profile and good recovery of dry matter in the silage, regardless of the use of inoculant.
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