Perdas fermentativas e composição bromatológica da entrecasca de palmito pupunha ensilada com aditivos químicos
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Data
2010-02-01
Autores
Schmidt, Patrick
Rossi Junior, Paulo
Toledo, Luciandra Macedo de
Nussio, Luiz Gustavo
Albuquerque, Danila Santiago de [UNESP]
Meduri, Beatriz [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Brasileira de Zootecnia
Resumo
Objetivou-se avaliar o efeito da inclusão de aditivos químicos na ensilagem de resíduos (entrecasca) da produção de palmito pupunha (Bactris gasipaes, Kunth). Utilizaram-se silos experimentais (baldes de 20 litros) providos de aparatos para determinação gravimétrica de perdas por gases e efluentes. Os tratamentos aplicados foram: controle (sem aditivos); ureia (1% da MV) e cal virgem (1% da MV). Decorridos 70 dias de armazenagem, os silos foram pesados, abertos e amostrados. As perdas por efluentes e gases aumentaram com a aplicação de cal virgem na ensilagem. As perdas totais de MS foram de 15,1; 14,4 e 26,6% nas silagens controle, ureia e cal, respectivamente. em todas as silagens, houve redução no teor de FDN e elevação da fração FDA, o que indica desaparecimento da fração hemicelulose. A relação cálcio:fósforo aumentou substancialmente com a adição de cal virgem, de 4,1:1 na silagem controle para 15,6:1 na silagem com cal. O resíduo da extração do palmito pupunha pode ser classificado como alimento de média qualidade e alto teor de umidade. Os aditivos aplicados na ensilagem não são efetivos em reduzir as perdas fermentativas no processo de conservação.
Feeding animals with agro-residues may reduce costs and environmental concerns. The agroindustrial wastes used as ruminant feeding are an alternative for ambient problems caused by it accumulation. This study aimed to evaluate chemical additives on the ensilage of residues of pupunha palm (Bactris gasipaes, Kunth) production. Experimental silos (20 L buckets) were used equipped with meters to determine gas and effluent DM losses. The experimental treatments were: control (no additives); urea (1% - wet basis) and calcium oxide (1% WB). After 70 days storage, the silos were weighed, opened and sampled. Effluent and gas DM losses increased with the application of calcium oxide at ensiling. Total DM losses were 15.1, 14.4 and 26.6% for the Control, Urea and Calcium oxide treatments, respectively. In all the treatments there was reduction in the NDF and increase in ADF increasing rates, that showed hemicellulose disappearance. The Ca:P ratio increased dramatically after calcium oxide addition, from 4.1:1 to 15.6:1. The residue from pupunha heart of palm extraction can be classified as a medium quality foodstuff with high moisture content. The additive applied at ensiling are not effective in reducing fermentative losses during the conservation process.
Feeding animals with agro-residues may reduce costs and environmental concerns. The agroindustrial wastes used as ruminant feeding are an alternative for ambient problems caused by it accumulation. This study aimed to evaluate chemical additives on the ensilage of residues of pupunha palm (Bactris gasipaes, Kunth) production. Experimental silos (20 L buckets) were used equipped with meters to determine gas and effluent DM losses. The experimental treatments were: control (no additives); urea (1% - wet basis) and calcium oxide (1% WB). After 70 days storage, the silos were weighed, opened and sampled. Effluent and gas DM losses increased with the application of calcium oxide at ensiling. Total DM losses were 15.1, 14.4 and 26.6% for the Control, Urea and Calcium oxide treatments, respectively. In all the treatments there was reduction in the NDF and increase in ADF increasing rates, that showed hemicellulose disappearance. The Ca:P ratio increased dramatically after calcium oxide addition, from 4.1:1 to 15.6:1. The residue from pupunha heart of palm extraction can be classified as a medium quality foodstuff with high moisture content. The additive applied at ensiling are not effective in reducing fermentative losses during the conservation process.
Descrição
Palavras-chave
cal virgem, efluente, gases, resíduos, ureia, calcium oxide, effluent, gases, residues, urea
Como citar
Revista Brasileira de Zootecnia. Sociedade Brasileira de Zootecnia, v. 39, n. 2, p. 262-267, 2010.