Simulation and validation of the ruminal digestion of carbohydrates in cattle from kinetic parameters obtained by in vitro gas production technique

Cabral, Luciano da Silva; Filho, Sebastião de Campos Valadares; Detmann, Edênio; Zervoudakis, Joanis Tilemahos; Galati, Rosemary Laís; Sousa, Daniel de Paula; Souza, Alexandre Lima de

doi:10.1590/s1516-35982011000900020

Cited by 3 publications

(2 citation statements)

References 19 publications

(21 reference statements)

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“…The availability of NFC in the rumen is essential for ruminal microbial growth and a greater microbial protein intake (Cabral et al, 2011), with a consequently higher rate of fermentation and gas production. In this way, the increase of NFC and reduction of the amount of FC to be fermented may have maximized the performance of the cellulolytic and hemicellulolytic bacteria, increasing Vf1.…”

Section: Resultsmentioning

confidence: 99%

Residue of propolis extract in bovine diets with increasing levels of protein on rumen fermentation

Nascimento

Teixeira

Tomich

et al. 2020

Pesq. agropec. bras.

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The objective of this work was to evaluate the effect of the residue from the extraction of propolis, added to bovine diets with increasing levels of protein, on ruminal fermentation in vitro. For this, the in vitro gas production technique was used. Incubation was carried out with inocula from three fistulated cows, in three periods. In each period, a cow received a daily dose of 100 g propolis residue. Four diets were evaluated: corn silage (control); and 25, 50, and 75% concentrate based on soybean meal. The following were determined: kinetics of rumen fermentation; dry matter degradation; production of gases, volatile fatty acids (acetate, propionate, and butyrate), methane, and ammonia nitrogen; and pH. The inclusion of 14.4, 15.1, and 9.5% propolis residue, respectively, to 25, 50, and 75% concentrate increased the production of gases from the degradation of fibrous carbohydrates, when compared with the control. The propolis residue reduces methane production and the acetate:propionate ratio at all tested concentrate inclusion levels.

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Section: Resultsmentioning

confidence: 99%

Residue of propolis extract in bovine diets with increasing levels of protein on rumen fermentation

Nascimento

Teixeira

Tomich

et al. 2020

Pesq. agropec. bras.

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“…The DMI is correlated with the digestibility of dry matter (DMD), because as DMD is increased, the DMI will also increase until the energy requirement is met. Cabral et al (2011) stated that the rate of feed passage through the rumenreticulum is proportional to the increase in digestibility up to a maximum point. Thus, as DMD is reduced, the retention time of the digesta will be longer, causing a limitation in intake due to the rumen-fill effect.…”

Section: Resultsmentioning

confidence: 99%

Milk production of crossbred holstein × zebu on different pasture-management strategies

Baffa¹,

Fernandes²,

Oliveira³

et al. 2020

Biosci. J.

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The objective of this study was to evaluate nutrient intake and digestibility, yield and components of milk from Holstein × Zebu cows on Tanzania grass pastures using a fixed-rest period or 95% light interception. The treatments consisted of evaluations of two Tanzania-grass pasture-management strategies: LI95 - when the pasture reached 95% light interception (LI), with 3 paddock-occupation days; and FR - the pasture was managed with a 30-days defoliation interval (DI) and 3 paddock-occupation days. Ten recently calved cows per treatment in year 1 and eight cows per treatment in year 2 were used, i.e. five cows per replicate in year 2 and four cows per replicate in year 2. Intake and digestibility of pasture nutrients, milk yield and milk composition were evaluated. The management strategies imposed on the Tanzania-grass pasture did not affect nutrient intake or digestibility. Milk yield and milk components were not affected by the management strategies, but milk yield per area unit was affected by the use of 95% light interception. The management strategy applying 95% light interception implies greater efficiency in the use of area, which translates to a higher milk yield per unit area, and thus it can be recommended to increase milk yield per area.

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Bagaço de cana-de-açúcar como volumoso exclusivo em dietas para ovinos

Silva

Lira

Ferreira

et al. 2015

Rev. bras. saúde prod. anim.

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<p>Objetivou-se avaliar o efeito de diferentes proporções de concentrado e bagaço de cana-de-açúcar como volumoso exclusivo em dietas para ovinos. Os consumos de matéria seca, matéria orgânica, proteína bruta, carboidratos não fibrosos e nutrientes digestíveis totais expressos em kg/dia, aumentaram linearmente com o aumento da proporção de concentrado na dieta. O mesmo comportamento foi observado para a digestibilidade da matéria seca. O que ocorreu de forma contrária para a digestibilidade da fibra em detergente neutro, que diminuiu com os maiores níveis de concentrado. Com o aumento das proporções de concentrado nas dietas experimentais, foi observado efeito quadrático no tempo despendido com ruminação, alimentação e ócio, e nas concentrações de ácido acético, propiônico e butírico no rúmen. Maiores proporções de concentrado associado ao bagaço de cana-de-açúcar <italic>in natura</italic>podem ser utilizadas em dietas para ovinos.</p>

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Simulation and validation of the ruminal digestion of carbohydrates in cattle from kinetic parameters obtained by in vitro gas production technique

Cited by 3 publications

References 19 publications

Residue of propolis extract in bovine diets with increasing levels of protein on rumen fermentation

Residue of propolis extract in bovine diets with increasing levels of protein on rumen fermentation

Milk production of crossbred holstein × zebu on different pasture-management strategies

Bagaço de cana-de-açúcar como volumoso exclusivo em dietas para ovinos

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