Efeitos do teor de carboidratos solúveis sobre as características da silagem de cana-de-açúcar

Silva, Estela Jorge Alves da; Borgatti, Laura Maria Oliveira; Meyer, Paula Marques; Marino, Celso Luís; Rodrigues, Paulo Henrique Mazza

doi:10.1590/s1516-35982008000800006

Cited by 16 publications

(16 citation statements)

References 17 publications

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“…The values found in the literature for sugar cane silage, also vary mainly according to the fermentation time and the use or not of additives. Silva et al (2008) found lactic acid:acetic acid ratio of 1.47 in sugar cane silages without additives and with 80 days of fermentation and attributed the result to the low production of lactic acid in the silages (2.5%). Sousa et al (2008) reported values around 0.25 for the lactic acid:acetic acid ratio in the silages of pure cane and treated with L. buchneri, with no difference between the two silages.…”

Section: Resultsmentioning

confidence: 99%

Chemical and microbiological characteristics of sugar cane silages treated with microbial inoculants

Ávila¹,

Valeriano²,

Pinto³

et al. 2010

R. Bras. Zootec.

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Section: Resultsmentioning

confidence: 99%

Chemical and microbiological characteristics of sugar cane silages treated with microbial inoculants

Ávila¹,

Valeriano²,

Pinto³

et al. 2010

R. Bras. Zootec.

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“…Os teores de MS e PB da cana-de-açúcar in natura foram de 28,1 e 4,1%, respectivamente, e os de FDN, FDA e hemicelulose, de 49,9; 28,9 e 21,0%, respectivamente. Freitas et al (2006) avaliaram a composição química da cana-de-açúcar e observaram valor médio de 28,6% de MS. Pedroso et al (2005) Silva et al (2008). Após a ensilagem, houve redução no teor de carboidratos solúveis e aumento nos teores de FDN, FDA, hemicelulose, etanol e ácido acético da cana (Tabela 2), como conseqüência do processo fermentativo característico da cana-de-açúcar, que, segundo Pedroso et al (2005), resulta em silagens com intensa atividade de leveduras, alto teor de álcool e elevadas perdas de matéria seca.…”

Section: Resultsunclassified

“…Pedroso et al (2007) estudaram a DIVMS de silagens de cana-de-açúcar e não observaram diferença entre as silagens sem inoculante ou tratada com L. buchneri. Silva et al (2008) Schmidt et al (2007), que obtiveram valores de 63,4 e 62,5% para a digestibilidade da MS das silagens controle e inoculada com Lactobacillus buchneri (3,6 x 10 5 /g MV), respectivamente.…”

Section: Resultsunclassified

Efeito do Lactobacillus buchneri na fermentação, estabilidade aeróbia e no valor nutritivo de silagem de cana-de-açúcar

et al. 2008

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RESUMO -Dois experimentos foram realizados para avaliar o valor nutritivo, a estabilidade aeróbia de silagens de cana-de-açúcar e a digestibilidade aparente de rações contendo essas silagens. No experimento 1, a cana-de-açúcar foi ensilada sem aditivo ou inoculada com cepas NCIMB 40788 do Lactobacillus buchneri (5 x 10 4 ufc/g de matéria verde). Amostras das silagens foram analisadas e comparadas à cana-de-açúcar in natura para avaliação da estabilidade aeróbia, considerando os dados de temperatura, pH e perdas de MS das silagens. No experimento 2, utilizaram-se 12 cordeiros distribuídos em blocos completos casualizados e mantidos em gaiolas para ensaio de metabolismo recebendo rações contendo cana-de-açúcar in natura, silagem de cana-de-açúcar sem aditivo ou silagem de cana-de-açúcar tratada com Lactobacillus buchneri. Os teores de matéria seca, carboidratos solúveis e ácido acético foram maiores na silagem com aditivo. O teor de etanol não diferiu entre as silagens. A silagem tratada com aditivo apresentou menor perda de matéria seca e manutenção do pH durante o período de avaliação em aerobiose. A digestibilidade aparente de fibra em detergente neutro, fibra em detergente ácido e hemicelulose foram maiores nas rações contendo silagem de cana-de-açúcar. Palavras-chave: ácido acético, bactérias heterofermentativas, composição química, digestibilidade aparente, etanolEffect of Lactobacillus buchneri on fermentation, aerobic stability, and nutritive value of sugar cane silage ABSTRACT -Two trials were performed to evaluate the nutritive value and aerobic stability of sugar cane silage, as well as apparent digestibility of diets containing these silages. In trial 1, sugar cane was ensiled without additive or inoculated with strains NCIMB 40788 of Lactobacillus buchneri (5 x 10 4 cfu/g wet basis). Silages were sampled, analyzed, and compared with fresh sugar cane. Aerobic stability was evaluated by controlling the temperature, pH, and dry matter losses of the silages. In trial 2, twelve lambs were assigned to a complete randomized block design and placed in metabolism crates and fed with diets composed by fresh sugar cane, sugar cane silage without additive, or sugar cane silage treated with Lactobacillus buchneri. Dry matter, soluble carbohydrates, and acetic acid concentrations were higher for silage treated with Lactobacillus buchneri when compared with silage without additive. There was no difference on ethanol levels between silages. Sugar cane silage treated with Lactobacillus buchneri showed lower dry matter losses, unchanged pH, and greater aerobic stability. Neutral detergent fiber, acid detergent fiber, and hemicellulose apparent digestibility were higher for sugar cane silage treatments.Key Words: acetic acid, apparent digestibility, chemical composition, ethanol, heterofermentative bacteria IntroduçãoAtualmente, a conservação de cana-de-açúcar na forma de silagem tem despertado o interesse de pesquisadores e produtores, sobretudo em virtude dos benefícios em logística e operacionalidade desta técnica.De...

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“…However, the alkalization resulted from additive use can neutralize the acidifying action of lactic acid, allowing lactic bacteria to continue to unfold soluble carbohydrates into more lactic acid, resulting in low substrate for yeast to unfold to ethanol. Silva et al (2008) evaluated the effect of soluble carbohydrates on the ethanol content in sugarcane silages and verified that ethanol production was reduced with the decrease in soluble carbohydrates of silages. The authors correlated this result to the lower metabolism of soluble carbohydrates to ethanol by yeasts.…”

Section: Resultsmentioning

confidence: 95%

Evaluation of relative biological efficiency of additives in sugarcane ensiling

et al. 2012

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-The objective of this study was to evaluate the effects of adding alkalis on the fermentative pattern, aerobic stability and nutritive value of the sugarcane silage. A completely randomized design with 6 additives in two concentrations (1 or 2%), plus a control group, totalizing 13 treatments [(6×2)+1] with four replications, was used. The additives were sodium hydroxide (NaOH), limestone (CaCO 3 ), urea (CO(NH 2 ) 2 ), sodium bicarbonate (NaHCO 3 ), quicklime (CaO) and hydrated lime (Ca(OH) 2 ). The material was ensiled in 52 laboratory silos using plastic buckets with 12 L of capacity.Silos were opened 60 days after ensiling, when organic acids concentration, aerobic stability and chemical composition were determined. The Relative Biological Efficiency (RBE) was calculated by the slope ratio method, using the data obtained from ratio between desirable and undesirable silage products, according to the equation: D/U ratio = [lactic/(ethanol + acetic + butyric)]. All additives affected dry matter, crude protein, acid detergent fiber, neutral detergent fiber contents and buffering capacity. Except for urea and quicklime, all additives increased the in vitro dry matter digestibility. In general, these additives altered the fermentative pattern of sugarcane silage, inhibiting alcoholic fermentation and improving lactic acid production.The additive that showed the best RBE in relation to sodium hydroxide (100%) was limestone (89.4%). The RBE values of urea, sodium bicarbonate and hydrated lime were 49.2%, 47.7% and 34.3%, respectively.

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Efeitos do teor de carboidratos solúveis sobre as características da silagem de cana-de-açúcar

Cited by 16 publications

References 17 publications

Chemical and microbiological characteristics of sugar cane silages treated with microbial inoculants

Chemical and microbiological characteristics of sugar cane silages treated with microbial inoculants

Efeito do Lactobacillus buchneri na fermentação, estabilidade aeróbia e no valor nutritivo de silagem de cana-de-açúcar

Evaluation of relative biological efficiency of additives in sugarcane ensiling

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