Microorganism Ruminal
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Turix, a dynamic mechanistic model for feed evaluation
The objective of this study was to use the Turix model (a new mechanistic dynamic model that can be used for feed evaluation under tropical conditions), along with in situ and in vitro sugar cane experimental data from a previous study, to evaluate sugar cane kinetics through estimation of three parameters associated with ruminal bacterial growth: kM,SmL, th
R. Bras. Zootec.. Publicado em: 2013-04
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2. DEGRADABILIDADE, COMPOSIÇÃO QUÍMICA E ANATOMIA DE FENO DE MANIÇOBA (Manihot sp.) / Anatomy, Chemical Composition and Degradability of Maniçoba
Aiming to relate the structural components of cell wall with its degradability, the chemical composition, the secondary compounds, the in situ degradability, anatomy and tissue degradability of hay of maniçoba (wild cassava) were evaluated. The stem showed cells with varied degrees of lignification, highlighting the presence of gelatinous fibers, pith paren
Publicado em: 2007
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3. In vitro degradation dynamics of neutral detergent fiber of signal grass according to supplementation with different sources of nitrogenous compounds and carbohydrates / Dinâmica de degradação in vitro da fibra em detergente neutro de capim-braquiária em função de suplementação com diferentes fontes de compostos nitrogenados e carboidratos
Two experiments were carried out to evaluate the utilization of fibrous carbohydrates from high quality grass by ruminal microorganisms. In the first experiment, it was studied the degradation dynamics of neutral detergent fiber (NDF) from high quality signal grass (Brachiaria decumbens Stapf.) according to supplementation with different sources of carbohydr
Publicado em: 2007
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4. Effect of different doses of sulfur on voluntary intake of low-quality elephant grass and estimates of microorganism populations and ruminal parameters in crossbred heifers / Efeito de doses diferentes de enxofre no consumo voluntÃrio de capim-elefante de baixa qualidade e nas estimativas de populaÃÃes de microrganismos e parÃmetros ruminais em novilhas mestiÃas
Com o objetivo de avaliar o consumo voluntÃrio, populaÃÃes de microrganismos e parÃmetros ruminais em novilhas mestiÃas recebendo capim de baixa qualidade e doses diferentes doses de enxofre conduziu-se o experimento no Campo Experimental de Coronel Pacheco pertencente à EMBRAPA Gado de Leite, Minas Gerais. O efeito de doses de enxofre (sulfato de amÃ
Publicado em: 2005
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5. Phenotypic and Phylogenetic Characterization of Ruminal Tannin-Tolerant Bacteria
The 16S rRNA sequences and selected phenotypic characteristics were determined for six recently isolated bacteria that can tolerate high levels of hydrolyzable and condensed tannins. Bacteria were isolated from the ruminal contents of animals in different geographic locations, including Sardinian sheep (Ovis aries), Honduran and Colombian goats (Capra hircus
American Society for Microbiology.
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6. Introduction of the Bacteroides ruminicola xylanase gene into the Bacteroides thetaiotaomicron chromosome for production of xylanase activity.
The xylanase gene from the ruminal bacterium Bacteroides ruminicola 23 is highly expressed in colonic Bacteroides species when carried on plasmid pVAL-RX. In order to stabilize xylanase expression in the absence of antibiotic selection, the xylanase gene was introduced into the chromosome of Bacteroides thetaiotaomicron 5482 by using suicide vector pVAL-7. X
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7. Anaerobic Production of Extracellular Polysaccharide by Butyrivibrio fibrisolvens nyx
Anaerobic production of extracellular polysaccharide (EP) was examined, using a previously uncharacterized, obligately anaerobic rumen isolate, Butyrivibrio fibrisolvens nyx, which produced an EP that was rheologically similar to xanthan gum. The main objectives were to determine the nutritional requirements and conditions which promoted EP production by str
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8. Microbial ureases: significance, regulation, and molecular characterization.
Microbial ureases hydrolyze urea to ammonia and carbon dioxide. Urease activity of an infectious microorganism can contribute to the development of urinary stones, pyelonephritis, gastric ulceration, and other diseases. In contrast to these harmful effects, urease activity of ruminal and gastrointestinal microorganisms can benefit both the microbe and host b