Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 9
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Alterações em parâmetros ruminais de bezerros alimentados com milho processado (Floculado VS. Laminado a vapor) e Monensina. Repositório Alice
NUSSIO, C. M. B.; SANTOS, F. A. P.; ZOPOLLATO, M.; PIRES, A. V.; FERNANDES, J. J. de R.; MORAIS, J. B. de.
2002
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Ácido graxos voláteis; Amido degradável; Amônia; Ionóforo; Ammonia; Degradable starch; Ionophore; Volatile fatty acids.
Ano: 2002 URL: http://www.alice.cnptia.embrapa.br/handle/doc/46042
Imagem não selecionada

Imprime registro no formato completo
Digestibilidad in situ de dietas con harina de nopal deshidratado conteniendo un preparado de enzimas fibrolíticas exógenas. Repositório Alice
ROMO, M.M.; ESTRADA, G.T.; HARO, I.M.; SOLÍS, I.C.; CRUZ-VÁSQUEZ, C..
Se evaluó el efecto de un preparado de enzimas fibrolíticas exógenas (celulasas y xilanasas) en la degradabilidad in situ de la materia seca (DisMS), fibra detergente neutro (DFDNr) y fibra detergente ácido residual (DFDAr), en dietas altas o bajas en harina de nopal deshidratado. Se aplicaron concentraciones de 0, 1, 2 y 3 g de enzima por kilogramo de materia seca al inicio y 24 horas antes de la degradación in situ. Se determinó la concentración de ácidos grasos volátiles totales y de nitrógeno amoniacal a las 0, 3, 6, 9, 12 y 24 horas después de aplicarse la enzima. No se observaron efectos en DisMS, DFDNr y DFDAr; la aplicación al inicio de la degradación in situ mostró valores más altos que a 24 horas para DisMS y DFDNr, pero fue menor para DFDAr. No...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Opuntia ficus-indica; Bovinos; Celulasas; Xilanasas; Ácidos grasos volátiles; Nitrógeno amoniacal; Cattle; Cellulases; Xylanases; Volatile fatty acids; Ammonia nitrogen.
Ano: 2006 URL: http://www.alice.cnptia.embrapa.br/handle/doc/119084
Imagem não selecionada

Imprime registro no formato completo
Digestibilidad in vitro de dietas energéticas para ovinos con inclusión de semilla de girasol. Colegio de Postgraduados
Herrera Pérez, Jerónimo.
Cinco dietas integrales isoenergéticas e isoprotéicas fueron evaluadas con el objetivo de medir la producción de gas in vitro y asociarla con la digestibilidad de la materia seca en dietas para corderos elaboradas con 0, 3, 6, 9 y 12 % de inclusión de semilla de girasol. Se midió la producción de gas in vitro (PGSIV) (volumen máximo de gas (Vmax; mL g-1) para materia seca (MS), materia orgánica (MO) y materia seca degradada (MSD), la digestibilidad in vitro de la MS (DIVMS), y producción de ácidos grasos volátiles (AGV) a las 6, 12, 24, 48 y 72 h de incubación. El diseño experimental fue completamente al azar con bloques generalizados utilizando el procedimiento MIXED del SAS. Se realizaron polinomios ortogonales para probar el efecto lineal y cuadrático...
Palavras-chave: Acidos grasos volátiles; Producción de gas; Oleaginosas; Volatile fatty acids; Gas production; Oilseeds; Ganadería; Maestría.
Ano: 2013 URL: http://hdl.handle.net/10521/1952
Imagem não selecionada

Imprime registro no formato completo
Effect of temperature on the anaerobic digestion of palm oil mill effluent Electron. J. Biotechnol.
Choorit,Wanna; Wisarnwan,Pornpan.
Two continuous stirred tank reactors (CSTRs) each fed with palm oil mill effluent (POME), operated at 37ºC and 55ºC, respectively, were investigated for their performance under varies organic loading rates (OLRs). The 37ºC reactor operated successfully at a maximum OLR of 12.25 g[COD]/L/day and a hydraulic retention time (HRT) of 7 days. The 55ºC reactor operated successfully at the higher loading rate of 17.01 g[COD]/L/day and had a HRT of 5 days. The 37ºC reactor achieved a 71.10% reduction of chemical oxygen demand (COD), a biogas production rate of 3.73 L of gas/L[reactor]/day containing 71.04% methane, whereas the 55ºC reactor achieved a 70.32% reduction of COD, a biogas production rate of 4.66 L of gas/L[reactor]/day containing 69.53% methane. An OLR...
Tipo: Journal article Palavras-chave: Hydraulic retention times; Mesophilic reactor; Methane; Organic loading rate; Temperature variations; Thermophilic reactor; Volatile fatty acids.
Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582007000300005
Imagem não selecionada

Imprime registro no formato completo
Effects of supplementation frequency on the ruminal fermentation and enteric methane production of beef cattle grazing in tropical pastures. Repositório Alice
CANESIN, R. C.; BERCHIELLI, T. T.; MESSANA, J. D.; BALDI, F.; PIRES, A. V.; FRIGHETTO, R. T. S.; FIORENTINI, G.; REIS, R. A..
Abstract: The objective of this study was to evaluate the characteristics of ruminal fermentation and enteric methane production in beef cattle subjected to different supplementation frequencies while grazing on Brachiaria brizantha cv. Marandu pastures. Nine cattle (325±65.7 kg BW) fitted with ruminal and duodenal cannulas were used in the ruminal fermentation study, and 12 cattle (399±32.6 kg BW) were used in the enteric methane production study. The treatments included supplementation once daily, supplementation once daily except Saturdays and Sundays, or supplementation on alternate days. The supplementation was equivalent to 10 g kg ?1 BW day ?1 for all treatments. The design employed was completely randomized with three treatments and three...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Bacterial N synthesis; N-alkane; Nutrient intake; Ruminal methane; Tropical pasture; Volatile fatty acids; Gado de corte; Ruminação; Fermentação; Suplemento alimentar; Metano; Methane; Rumen fermentation; Beef cattle; Dietary supplements.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1003695
Imagem não selecionada

Imprime registro no formato completo
Evaluation of additive for reducing gaseous emissions from swine waste CIGR Journal
Sanjay B. Shah; NC State University; Praveen Kolar; Biological and Agricultural Engineering Department, North Carolina State University, Raleigh, NC 27695, USA.
Additives can reduce gaseous emissions from swine waste lagoons and pits.  We have demonstrated for the first time that an additive has the potential to reduce methane emission from an anaerobic swine lagoon.  ManureMax®, a humate product was evaluated for its ability to reduce gas and odor emissions from swine anaerobic lagoon and barn flush-water.  Four treatments, Control (no additive), Low (label dosage), Medium (50% higher than label dosage), and High (200% higher than label dosage) were applied to inclined pipes installed in a swine lagoon.  While the Medium and High treatments were not effective, the Low treatment reduced methane, 2-butanone, and tetrahydrofuran concentrations by 34%, 44%, and 57%, respectively vs. the Control in the pipe headspace....
Palavras-chave: Agricultural engineering; Environmental engineering; Air quality; Greenhouse gases; Animal waste Hog; Mesocosm-scale; Methane; 2-butanone; Tetrahydrofuran; Volatile fatty acids; Toluene.
Ano: 2012 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2111
Imagem não selecionada

Imprime registro no formato completo
Methanogenic toxicity evaluation of chlortetracycline hydrochloride Electron. J. Biotechnol.
Reyes-Contreras,Carolina; Vidal,Gladys.
Background Anaerobic digestion is a technology applied successfully to converting organic matter into biogas. However, the presence of inhibitory compounds such as antibiotics can adversely affect methane production. The aim of this study is to evaluate the toxic effect of chlortetracycline hydrochloride (CLOR) on the methanogenic bacteria. In order to study the methanogenic toxicity of CLOR, different concentrations of CLOR (10, 50, 100, 200 mg L- 1) were evaluated by methanogenic toxicity assays using three feedings. Results Maximum methane production was obtained for the assays with 10 mg CLOR L- 1, the values obtained were 277 ± 4.07; 193 ± 11.31 and 166 ± 7.07 mL for the first, second and third feedings, respectively. The average values for acetic,...
Tipo: Journal article Palavras-chave: Antibiotics; Anaerobic batch assay; Bacterial inhibition; Volatile fatty acids.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000600010
Imagem não selecionada

Imprime registro no formato completo
Rumen parameters and passage rate in cattle fed diets based on sugarcane hydrolyzed with calcium oxide. Repositório Alice
LOPES, F. C. F.; CAMPOS, M. M.; BORGES, A. L. C. C.; PANCOTI, C. G.; SILVA, R. R.; MOREIRA, T. S..
Abstract Nine non-lactating Holstein x Gyr cattle were fed with rations based on chopped sugarcane supplied in natura (control) or hydrolyzed (fresh matter basis) for 24 h with 1% or 2% calcium oxide (CaO), which corresponds to 3.1% or 6.2% CaO on a dry matter (DM) basis, respectively. Ruminal parameters (pH and ammonia N, acetate, propionate and butyrate concentrations) as well as the kinetics of fluid and particulate passage in the gastrointestinal tract from cattle were evaluated. A design using three 3 x 3 contemporaneous Latin Squares (LS) was adopted. The studies of kinetics of fluid and particulate passage were performed using the external markers cobalt-EDTA and chromium-mordanted-NDF, respectively. The ruminal parameters were analyzed according to...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Bovine; Lime; Álcali; Ph; Saccharum Officinarum; Volatile fatty acids.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1101930
Imagem não selecionada

Imprime registro no formato completo
Use of volatile fatty acids salts in the production of xanthan gum Electron. J. Biotechnol.
Correa Leite,José Alberto; Pozzi,Eloiza; Pelizer,Lúcia Helena; Zaiat,Marcelo; Barboza,Marlei.
Background: The aim of this study was the production of xanthan gum from salts of volatile fatty acids, which can be generated in anaerobic processes for the production of hydrogen from organic wastewaters. Xanthan gum was produced with three different acid salts used to replace the traditional citrate, which is normally used in the culture for the production of this biopolymer. The volatile fatty acids (VFA) salts used were sodium acetate 0.0328 M, sodium propionate 0.0219 M, and sodium butyrate 0.0164 M. Results: The values of biomass yield, (Yp/x) obtained were 9.2 g/g for acetate, 11.78 g/g for citrate, 11.80 g/g for butyrate and 14.59 g/g for propionate, while the values of the product yield (Yp/s), were 0.92; 0.59; 0.71 and 0.72 for acetate, citrate,...
Tipo: Journal article Palavras-chave: Rheology; Volatile fatty acids; Xanthan gum.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000200006
Registros recuperados: 9
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional