Efeitos da adição de propilenoglicol ou monensina à silagem de milho sobre a cinética de degradação dos carboidratos e produção cumulativa de gases in vitro

Faria, B.N.; Reis, R.B.; Maurício, Rogério Martins; Lana, Ângela Maria Quintão; Soares, Suziane Rodrigues; Saturnino, H.M.; Coelho, Sandra Gesteira

doi:10.1590/s0102-09352008000400019

Cited by 4 publications

(4 citation statements)

References 17 publications

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“…Similar to the results of this study, Faria et al (2008) observed a reduction of total gas production from 12…”

Section: Scfa Concentrationssupporting

confidence: 91%

Dose-response effect of crude extracts produced by actinobacteria on in vitro rumen fermentation

Martins¹,

Arcari²,

Peti³

et al. 2018

Braz. J. Vet. Res. Anim. Sci.

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Actinobacteria have been researched as a source that produces crude extracts, which contain bioactive compounds able to act as antimicrobial agents. The present investigation evaluated the dose-response effect of two crude extracts, obtained at Caatinga rhizosphere (Caat) and Rhizophora mangle (AMC), on in vitro ruminal fermentation by: cumulative gas production, digestibility of dry (IVDMD) and organic matter (IVOMD), and short-chain fatty acids concentration (SCFA). Three multiparous Holstein dairy cows with ruminal fistula were used as the inoculum donors and fed a basal diet consisting of corn silage, soybean meal, urea, ground corn and mineral supplement. Ruminal fluid samples were incubated in glass bottles with 1 g of the dried and milled diet, a buffer solution, and the crude extracts evaluated in four doses (0.3, 0.6, 0.9 and 1.20 mg/10 mL inoculum) in a randomized block design, and the donators were considered as blocks with random effects. Additionally, negative controls were used. The results were expressed as average values based on triplicate analyses. Decreased cumulative gas production was observed according to linear dose response at 24, 48 and 72 h of incubation with the addition of Caat extract. The IVOMD showed a linear decrease at 72 h of incubation with dose Caat inclusion. Furthermore, the inclusion of Caat extract linearly reduced butyric and isovaleric acid concentrations, as well as acetate:propionate ratio. Finally, the Caat inclusion increased the propionic acid concentration in comparison to AMC extract. However, the inclusion of AMC extract did not affect any of the analyzed variables at the used doses. The Caat extract could be used as a modulator of in vitro ruminal fermentation, since it reduced acetate:propionate ratio and cumulative gas production. ResumoAs actinobactérias têm sido pesquisadas como fonte produtoras de extratos brutos que contêm compostos bioativos capazes de atuar como agentes antimicrobianos. O presente trabalho investigou o efeito dose-resposta de dois extratos brutos, AMC e Caat, na fermentação ruminal in vitro por: produção cumulativa de gás, digestibilidade in vitro da matéria seca (IVDMD) e matéria orgânica (IVOMD) e concentração de ácidos graxos de cadeia curta (SCFA). Três vacas leiteiras da raça Holandesa, multíparas e portadoras de fístula ruminal foram utilizadas como doadoras de inóculo ruminal e foram alimentadas com uma dieta basal composta por silagem de milho, farelo de soja, ureia, milho moído e suplemento mineral. As amostras de inóculo ruminal foram incubadas em garrafas de vidro com 1 g da dieta seca e moída, solução tampão e os extratos brutos avaliados em quatro doses (0,3, 0,6, 0,9 e 1,20 mg/10 mL de inóculo) em delineamento em blocos casualizados, sendo as doadoras consideradas os blocos como efeito aleatório. Além disso, foram utilizados controles negativos para a correção da produção de gás. Os resultados foram expressos como valores médios com base em análises triplicadas. A diminuição da produção cumulativa de gás foi observada de aco...

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“…Similar to the results of this study, Faria et al (2008) observed a reduction of total gas production from 12…”

Section: Scfa Concentrationssupporting

confidence: 91%

Dose-response effect of crude extracts produced by actinobacteria on in vitro rumen fermentation

Martins¹,

Arcari²,

Peti³

et al. 2018

Braz. J. Vet. Res. Anim. Sci.

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“…Reduction in colonization time is favored by readily fermentable substrates and by physical and chemical characteristics of the sample cell wall. Nevertheless, Faria et al (2008) stated that the correlation between the cumulative gas production and total carbohydrate degradation is high, but some differences in the magnitude of this correlation can be detected depending on the technique used.…”

Section: Results Anddiscussionmentioning

confidence: 99%

Fermentation kinetics and in vitro degradation rates of grasses of the genus Cynodon

Reis

Lima

Sales

et al. 2016

Acta Sci. Anim. Sci.

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The present study aimed to evaluate the fermentation kinetics and degradation rates of Cynodon grasses estimated by semi-automated technique of in vitro gas production. The forages were: Coastcross, Tifton 85 and Tifton 68. Pressure readings were taken at 0, 2, 4, 6, 8, 10, 12, 15, 19, 24, 30, 36, 48, 72 and 96 hours. Dry matter degradability (DMD) was obtained by the percentage of dry matter (DM) remaining after 0, 6, 12, 24, 48 and 96 hours of fermentation. Tifton 85 showed a higher total gas production (p <0.05). Higher fermentation rates were found at the beginning of fermentation followed by subsequent reduction (p <0.05) over time. Tifton 85 and Tifton 68 showed higher values (p < 0.05) for soluble fraction, potentially degradable insoluble fraction, insoluble fraction, potential and effective degradability of dry matter in relation to Coastcross grass. Higher gas production during in vitro incubation of dry matter was observed for Tifton 85 g.

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“…Faria et al [48], using corn silage treated or not with Monensin sodium before ensiling observed that Monensin reduced the accumulated gas production at 48 h of incubation from 56.59 mL g −1 of DM (just corn silage) to 52.99 mL g −1 of DM (corn silage with Monensin). In addition, the V F of 96 h of incubation estimated by the France model went from 62.72 mL g −1 of DM (just corn silage) to 56.58 mL g −1 of DM (corn silage with Monensin).…”

Section: Discussionmentioning

confidence: 99%

Kinetics of In Vitro Gas Production and Fitting Mathematical Models of Corn Silage

Zornitta

Ítavo

et al. 2021

Fermentation

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This study aimed at examining the effects of rumen inoculum of steers receiving different combinations of ionophore and probiotics in their diets on in vitro gas production of corn silage. The fitting of gas production was performed with five mathematical models and its kinetics was evaluated. Four crossbred steers (403.0 ± 75.5 kg body weight) with ruminal cannula were assigned to a 4 × 4 Latin square design. The additives used were Monensin sodium (Rumensin® 100, 3 g/day), Bacillus toyonensis (Micro-Cell Platinum® 109, 1 g/day) and Saccharomyces cerevisiae boulardii (ProTernative®20, 0.5 g/day). Additives were arranged into the following treatments, supplied daily into total mixed diet: (1) Monensin; (2) Monensin + B. toyonensis; (3) Monensin + S. boulardii; and (4) B. toyonensis + S. boulardii. The gas production data were fitted into the models of Gompertz, Groot, Ørskov, Brody, Richards, and Dual-pool Logistic. A perfect agreement between observed and predicted values in curves of accumulated in vitro gas production was observed in the Groot and Richards models, with higher coefficient of determination (R2 = 0.770 and 0.771, respectively), concordance correlation coefficient (CCC = 0.871 and 0.870, respectively), and root mean square error of prediction (RMSEP = 1.14 and 1.15, respectively). Evaluating the feed additives throughout the Groot model, the B. toyonensis + S. boulardii treatment presented higher VF (12.08 mL/100 mg of DM; p = 0.0022) than Monensin and Monensin + S. boulardii (9.16 and 9.22 mL/100 mg of DM, respectively). In addition, the fractional rate of gas production (k) was higher (p = 0.0193) in B. toyonensis + S. boulardii than in Monensin, not presenting a statistical difference (p > 0.05) from the other two treatments. Additionally, with the time of beginning to gas production, the lag time (λ), was greater (p < 0.001) with Monensin and Monensin + B. toyonensis than with Monensin + S. boulardii and B. toyonensis + S. boulardii. The combination of Monensin and probiotics (B. toyonensis + S. boulardii) resulted in better kinetics of degradation of corn silage, being that the Groot and Richards models had the best fit for estimates of the in vitro gas production data of corn silage tested with different feed additive combinations.

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Efeitos da adição de propilenoglicol ou monensina à silagem de milho sobre a cinética de degradação dos carboidratos e produção cumulativa de gases in vitro

Cited by 4 publications

References 17 publications

Dose-response effect of crude extracts produced by actinobacteria on in vitro rumen fermentation

Dose-response effect of crude extracts produced by actinobacteria on in vitro rumen fermentation

<b>Fermentation kinetics and <i>in vitro</i> degradation rates of grasses of the genus <i>Cynodon</i>

Kinetics of In Vitro Gas Production and Fitting Mathematical Models of Corn Silage

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