Fracionamento de carboidratos e proteínas de silagens de capim-elefante com casca de café, farelo de cacau ou farelo de mandioca
Data
2009-05
Título da Revista
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Editor
Sociedade Brasileira de Zootecnia
Resumo
Este experimento foi conduzido para avaliar as frações que compõem os carboidratos e as proteínas da silagem de capim-elefante com 15% casca de café, farelo de cacau ou farelo de mandioca. A adição dos co-produtos no momento da ensilagem foi realizada na base da matéria natural (peso/peso), com dez repetições por tipo de silagem. O maior teor de carboidratos totais foi observado na silagem com farelo de mandioca e o menor, na silagem com farelo de cacau, seguida das silagens controle e com casca de café. Maiores valores de carboidratos não-fibrosos (A+B1) também foram verificados para as silagens com farelo de mandioca. Os menores valores de fração indigestível (C, %CT) foram observados para a silagem com farelo de mandioca, enquanto as silagens com casca de café e farelo de cacau apresentaram os maiores valores desta fração. A silagem com farelo de cacau apresentou os maiores valores de proteína bruta e foi seguida das silagens com casca de café, controle e com farelo de mandioca. A presença dos aditivos influenciou as frações protéicas da silagem de capim-elefante: os maiores valores de fração A (%PB) foram determinados nas silagens controle e com farelo de mandioca. Apesar do maior valor protéico, as silagens com farelo de cacau e casca de café apresentaram os maiores valores de fração indigestível de proteína (C, %PB). A adição de farelo de cacau e casca de café ao capim-elefante no momento da ensilagem aumenta as frações indigestíveis de carboidratos e de proteína da silagem. O farelo de mandioca ensilado com capim-elefante é um bom aditivo para a produção de silagem.
This experiment was carried out to evaluate the fractions that compose carbohydrates and protein from elephant grass silage with 15% of coffee hulls, cocoa meal or cassava meal. The addition of residues at the ensilage moment was performed in natural matter basis (weight/weight), with ten replicates per treatment. The addition of residues at the ensilage moment was performed in natural matter basis (weight/weight), with ten repetitions per treatment. The total carbohydrates level of the silage with cassava meal was greater than that of other silages, with the lowest value observed to silage with cocoa meal, followed by control and silages with coffee hulls. Higher values of no-fiber carbohydrates (A + B1) were also verified for silages with cassava meal. Smaller values of the indigestible fraction (C, %TC) were observed for silage with cassava meal, while silages with coffee hulls and cocoa meal showed higher values for this fraction. Higher CP values were verified in silage with cocoa meal, followed by the silages with coffee hulls, control and with cassava meal. The addition of by-products influenced the protein fractions, with higher values of fraction A (%CP) in control silages and with cassava meal. Although with higher protein value, the higher protein indigestible fraction (C, %CP) values were verified for silages with cocoa meal and coffee hulls. The addition of cocoa meal and coffee hulls to elephant grass at the ensilage moment produced silages with higher carbohydrate and protein indigestible fractions. The cassava meal ensiled with elephant grass showed to be a good addictive to silage production.
This experiment was carried out to evaluate the fractions that compose carbohydrates and protein from elephant grass silage with 15% of coffee hulls, cocoa meal or cassava meal. The addition of residues at the ensilage moment was performed in natural matter basis (weight/weight), with ten replicates per treatment. The addition of residues at the ensilage moment was performed in natural matter basis (weight/weight), with ten repetitions per treatment. The total carbohydrates level of the silage with cassava meal was greater than that of other silages, with the lowest value observed to silage with cocoa meal, followed by control and silages with coffee hulls. Higher values of no-fiber carbohydrates (A + B1) were also verified for silages with cassava meal. Smaller values of the indigestible fraction (C, %TC) were observed for silage with cassava meal, while silages with coffee hulls and cocoa meal showed higher values for this fraction. Higher CP values were verified in silage with cocoa meal, followed by the silages with coffee hulls, control and with cassava meal. The addition of by-products influenced the protein fractions, with higher values of fraction A (%CP) in control silages and with cassava meal. Although with higher protein value, the higher protein indigestible fraction (C, %CP) values were verified for silages with cocoa meal and coffee hulls. The addition of cocoa meal and coffee hulls to elephant grass at the ensilage moment produced silages with higher carbohydrate and protein indigestible fractions. The cassava meal ensiled with elephant grass showed to be a good addictive to silage production.
Descrição
Palavras-chave
Conservação de forragem, Pennisetum purpureum, Resíduos, Subprodutos
Citação
PIRES, A. J. V. et al. Fracionamento de carboidratos e proteínas de silagens de capim-elefante com casca de café, farelo de cacau ou farelo de mandioca. Revista Brasileira de Zootecnia, Viçosa, v. 38, n. 3, p. 422-427, mar. 2009.