Volatile Fatty Acids
Mostrando 25-36 de 212 artigos, teses e dissertações.
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25. Degradação e produção de gases in vitro de glicerina da cadeia produtiva do biodiesel
his study was realized to evaluate the production of gas and volatile fatty acids when glycerin was used to replace four forage species through the use of a semi-automated technique in vitro. The experimental design included 4 treatments and 4 replications. The treatments consisted of increasing levels of glycerin (0, 30, 50 and 70%), which was used to repla
Acta Sci., Anim. Sci.. Publicado em: 2015-09
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26. Different true-protein sources do not modify the metabolism of crossbred Bos taurus × Bos indicus growing heifers
The present study was conducted to investigate the effect of alternative true-protein sources to soybean meal, with different ruminal degradability, using a sugarcane-based diet, on nutrient digestion, ruminal fermentation, efficiency of microbial protein synthesis and passage rate in prepubertal dairy heifers. Eight crossbred rumen- and duodenum-cannulated
R. Bras. Zootec.. Publicado em: 2015-02
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27. Ragged Robin (Lychnis flos-cuculi) - a plant with potential medicinal value
Lychnis flos-cuculi L., Caryophyllaceae, contains a number of active compounds belonging to several chemical groups. Previous studies have led to the identification of phytoecdysteroids, triterpenoids saponins, volatile compounds, fatty acid derivatives, phenolic acids and flavonoids. Research on pharmacological activity showed that plant extracts inhibited
Rev. bras. farmacogn.. Publicado em: 2014-12
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28. Effects of supplementation frequency on the ruminal fermentation and enteric methane production of beef cattle grazing in tropical pastures
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 brizanthacv. Marandu pastures. Nine cattle (325±65.7 kg BW) fitted with ruminal and duodenal cannulas were used in the ruminal fermentation study,
R. Bras. Zootec.. Publicado em: 2014-11
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29. Volatile fatty acids influence on the structure of microbial communities producing PHAs
Polyhydroxyalkanoates (PHAs) can be produced by microorganisms and are a biodegradable alternative to fossil-fuel based plastics. Currently, the focus is on reducing production costs by exploring alternative substrates for PHAs production, and on producing copolymers which are less brittle than monomers. Accordingly, this study used a substrate consisting of
Braz. J. Microbiol.. Publicado em: 2014-06
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30. Rumen fermentation and rumen microbes in Nellore steers receiving diets with different lipid contents
The objective of the present study was to evaluate the effects of dietary lipid content (20, 40 and 60 g/kg dry matter) on intake, total and ruminal apparent digestibility of dry matter (DM), nutrient digestibility, rumen fermentation parameters, microbial synthesis efficiency and rumen microbial content of beef cattle. Nine cannulated steers at 6 months of
R. Bras. Zootec.. Publicado em: 2013-03
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31. Tratamento de corantes reativos em solução aquosa utilizando lodo de esgoto sanitário como biossorvente em reatores contínuos. / Treatment of reactive dyes in aqueous solution using sewage sludge as biosorbent in continuous reactors.
Conventional treatments of textile industry effluents usually produce significant amounts of recalcitrant subproducts. Among the new treatment technologies, adsorption appears as an alternative method. In this study, the efficiency of sewage sludge in the removal of reactive dye yellow GR, blue GN and red RB was evaluated to pH, total alkalinity, volatile fa
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/08/2012
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32. Estudo químico, análise do óleo essencial e avaliação das atividades antioxidante e antibacteriana do Marmelhinho [Cordiera sessilis (Vell.) Kuntze (Rubiaceae)]
In this work was carried out chemical analysis, identification of volatile components, the determination of antioxidant activity and antibacterial activity of wood, bark and leaves of Cordiera sessilis (Vell) Kuntze, known as marmelinho. This study is justified because the analysis of chemical species Cordiera sessilis (Vell) Kuntze had not been studied so f
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/07/2012
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33. COMPOSTOS VOLÁTEIS E PARÂMETROS DE QUALIDADE DE DIFERENTES GENÓTIPOS DE FRUTOS DE BUTIA ODORATA. / VOLATILE COMPOUNDS AND QUALITY PARAMETERS FROM DIFFERENT GENOTYPES OF BUTIA ODORATA.
O butiá (Butia odorata) tem recebido especial atenção da comunidade científica, em virtude de suas propriedades nutritivas e funcionais que estão sendo reveladas, além das suas características sensoriais peculiares, ainda pouco exploradas. Desta forma, o objetivo do presente trabalho foi caracterizar diferentes genótipos de frutos de butiazeiros cole
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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34. Avaliação de métodos para análise de nitrogênio amoniacal em fluido ruminal e de óxido crômico em amostras de fezes de bovinos / Evaluation of methods for analyses of ammonia nitrogen in rumen fluid and chromium in cattle feces
This dissertation was based on two different experiments. The first one was conducted to evaluate the accuracy of two different methods in measuring the ammonia nitrogen (N-NH3) concentration in rumen fluid: a catalyzed indophenol colorimetric reaction (CICR) and the Kjeldahl distillation (KD). Five buffered standard solutions containing volatile fatty acids
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/02/2012
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35. Rumen fermentation and nutrient flow to the omasum in Holstein cows fed extruded canola seeds treated with or without lignosulfonate
Four multiparous Holstein cows averaging 548 kg of body weight and 74 d in lactation were used in a Latin square design with four 21-d experimental periods to determine effects of feeding extruded versus non-extruded canola seed, with or without 50 g/kg lignosulfonate on rumen fermentation, nutrient flow to the omasum, and degradability of dry matter (DM) an
Revista Brasileira de Zootecnia. Publicado em: 2012-07
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36. Ruminal parameters of bovines fed diets based on sugar cane with doses of calcium hydroxide
The objective of this study was to evaluate the administration of different doses of calcium hydroxide mixed with sugar cane fed to cows by the pH, ammonia nitrogen and volatile fatty acids concentration in ruminal content. Four cows with fistulated rumen were distributed in a Latin square (4 × 4) in split plot. The treatments involved adding doses of 0, 8,
Revista Brasileira de Zootecnia. Publicado em: 2012-04