Eficiência microbiana e parâmetros ruminais em bovinos alimentados com dietas à base de volumosos tropicais

Cabral, Luciano da Silva; Filho, Sebastião de Campos Valadares; Detmann, Edênio; Zervoudakis, Joanis Tilemahos; Souza, Alexandre Lima de; Veloso, Rafael Gonçalves

doi:10.1590/s1516-35982008000500021

Cited by 9 publications

(7 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The estimated values of microbial efficiency expressed in relation to RDOM and RDTC for the hay diet were greater than those obtained by Silva et al (2007), working with Tifton hay supplemented with soybean meal, among the different nitrogen sources evaluated, but lower than the results reported by Berchielli et al (1995a), who evaluated different markers, including DAPA, and different roughage:concentrate ratios, and Cabral et al (2008), who evaluated different forages. These same authors, utilizing corn silage, reported slightly greater efficiencies than the results obtained in the current study.…”

Section: Resultscontrasting

confidence: 68%

2,6-Diaminopimelic acid (DAPA) in microbial protein quantification of heifers fed different forage sources

et al. 2015

View full text Add to dashboard Cite

-The objective of this study was to evaluate the flow of nitrogenous compounds, protein degradability, rumen degradation of total carbohydrate and organic matter and microbial efficiency in heifers subjected to diets containing corn silage, sugarcane or Tifton. For this purpose, the 2,6-diaminopimelic acid (DAPA) technique was adopted and analytical procedures for amino acids by HPLC were adapted. Six rumen-fistulated Holstein-Zebu heifers with 480 kg of initial BW and at 24 months of age kept in individual tie stalls were assigned to two 3 × 3 Latin squares. Omasal digesta dry matter and microbial dry matter flows were determined using the isolated, purified and enriched lignin (LIPE ® ) and DAPA markers, respectively. Isolated bacteria from rumen showed on average 5.84 g/100 g microbial N, 0.25 g/100 g DAPA in dry matter and 44.61 DAPA: N ratio. The forage sources did not influence the flows of nitrogen compounds, except for total omasal flow and non-ammonia N in relation to N intake for the corn silage diet, for which there was an upward trend compared with the other diets. The degradation of the organic matter and total carbohydrates did not differ, averaging 6.1 kg/day and 5.2 kg/day, respectively. The studied forage sources do not influence the flows of nitrogen compounds, except for total omasal flow and non-ammonia N in relation N intake for the corn silage diet, for which there is an upward trend compared with the other diets. Protein degradability and microbial efficiency are similar between evaluated diets.

show abstract

Section: Resultscontrasting

confidence: 68%

2,6-Diaminopimelic acid (DAPA) in microbial protein quantification of heifers fed different forage sources

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Esse valor foi superior aos valores mínimos de 3,3 e 8,0 mg/100 mL sugeridos por Hoover (1986) como necessários para adequado crescimento microbiano e digestão da MO no rúmen, respectivamente. Cabral et al (2002b) estimaram concentrações máximas de N-NH 3 ruminal de 12,84; 25,64 e 27,91mg/100 mL às 3,55; 4,23 e 4,7 horas após a alimentação para dietas à base de silagem de milho, feno de capim-tifton 85 e silagem de capim-elefante, respectivamente.…”

Section: Resultsunclassified

“…Resultados semelhantes foram obtidos por Cabral et al (2002b) para dietas à base de silagem de milho. O ARC (1984) preconiza valor médio de 32 g Nmic/kgMODR e Valadares Filho (1995), de 33,4 g Nmic/kgCTDR, para a eficiência microbiana.…”

Section: Resultsunclassified

See 1 more Smart Citation

Consumo, digestibilidade e parâmetros ruminais em bovinos de corte alimentados com dietas contendo silagem de sorgo e pré-secado de capim-tifton 85

Pereira¹,

Souza²,

Filho³

et al. 2007

R. Bras. Zootec.

Self Cite

View full text Add to dashboard Cite

Avaliaram-se o consumo e as digestibilidades total e parcial dos nutrientes, a eficiência microbiana, o balanço de nitrogênio, a taxa de passagem da digesta ruminal, o pH e a concentração de amônia ruminal em bovinos de corte alimentados com dietas contendo como fonte de volumoso pré-secado de capim-tifton 85 e silagem de sorgo nas seguintes proporções: 100:0; 68:32; 34:66 e 0:100, respectivamente, com base na MS. Foram utilizados quatro animais mestiços Holandês × Zebu (H × Z), fistulados no rúmen e abomaso, com peso médio de 364 kg, distribuídos em um quadrado latino 4 × 4. A relação volumoso:concentrado foi de 60:40, na base da MS. Os consumos de MS, MO, PB, carboidratos totais (CT), assim como as digestibilidades totais da PB, EE, CNF e FDN não foram influenciados pelas dietas, registrando-se valores médios de 6,01; 5,69; 0,76 e 4,64 kg/dia e 67,94; 82,42; 84,43 e 53,57%, respectivamente. Os consumos de EE, CNF, FDN e NDT e as digestibilidades aparentes totais da MS, MO e CT aumentaram linearmente com o incremento da proporção de silagem de sorgo no volumoso. As digestibilidades ruminais e intestinais de MS, CT, CNF e FDN não foram influenciadas pelas dietas. O pH não foi alterado pelos tempos de coleta nem pelas dietas. A concentração de amônia foi influenciada pelos tempos de coleta, estimando-se valor máximo de 13,14 mg/100 mL, às 2,90 horas após a alimentação. Para as dietas contendo 0; 32; 66 e 100% de silagem de sorgo no volumoso estimaram-se taxas de passagem da digesta ruminal da ordem de 4,10: 4,22; 4,27 e 5,30%/hora, respectivamente. A eficiência microbiana não foi afetada pelo nível de silagem de sorgo na dieta. O uso de silagem pré-secada de capim tifton 85 associada à silagem de sorgo mostrou-se uma boa alternativa de volumoso para bovinos de corte.

show abstract

“…The study involved three stages: the first consisted of the ruminal and total nutrient digestion determination obtained in bovine fitted on rumen and abomasum, which were fed diets based on silage corn, elephant-grass silage and Tifton 85 grass hay (Cabral et al, 2004); the second stage was done to obtain estimates of the digestion rates of carbohydrate fractions by in vitro gas production technique, and the last one involved the simulation of ruminal and total digestion predicted values of the total and fibrous carbohydrates from kinetics parameters obtained in stage two, along with the validation of these estimates by comparing them with those measured in animals (Cabral et al, 2006;2008).…”

Section: Methodsmentioning

confidence: 99%

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

et al. 2011

Self Cite

View full text Add to dashboard Cite

This study aimed to validate the estimates of the ruminal degradation of total carbohydrates (TC), ruminal and total digestion of fibrous carbohydrates (FC) and microbial nitrogen flow in the abomasum evaluated by in vitro gas production technique (IVGP). Six ruminally and abomasally cannulated steers arranged in a double 3 × 3 latin square were used to measure described parameters with indigestible neutral detergent fiber (INDF) utilization as marker. Total and fibrous carbohydrates degraded in the rumen were estimated through digestion rates obtained for fibrous (FC) and non fibrous carbohydrates (NFC) using in vitro gas production technique, corrected for its respective ruminal and postruminal passage rates. The estimation of the total digestion of FC was done by the sum of ruminal and post-ruminal digestion of these compounds. The microbial nitrogen flow in the abomasum was estimated by the calculating the microbial efficiency of bacteria that ferment FC and NFC, utilizing the microbial growth rate obtained by the ruminal digestion rate for carbohydrate fractions in IVGP. The utilization of the in vitro gas production technique allows obtaining accurate estimates of the ruminal digestion of total carbohydrates, total and ruminal digestion of fiber carbohydrates and microbial protein flow in the abomasum

show abstract

Eficiência microbiana e parâmetros ruminais em bovinos alimentados com dietas à base de volumosos tropicais

Cited by 9 publications

References 26 publications

2,6-Diaminopimelic acid (DAPA) in microbial protein quantification of heifers fed different forage sources

2,6-Diaminopimelic acid (DAPA) in microbial protein quantification of heifers fed different forage sources

Consumo, digestibilidade e parâmetros ruminais em bovinos de corte alimentados com dietas contendo silagem de sorgo e pré-secado de capim-tifton 85

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

Contact Info

Product

Resources

About