Ammonia Poisoning
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Analysis of NH3-N Slow Release systems for fiber digestibility of low-quality forage: in vitro approach
ABSTRACT: Urea is a common non-protein supplement used in ruminant feed; however, excessive consumption may lead to poisoning by NH3. Although the slow release of urea into the rumen has shown to be an essential aspect for ruminant feed, to date only a few studies have addressed this matter. In this study we examined the influence of five different NH3-N slo
Sci. agric. (Piracicaba, Braz.). Publicado em: 20/12/2019
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2. Ammonia detoxication efficacy in cattle adapted or not to dietary urea and afterwards undergone to different privation periods / Eficiência da desintoxicação de amônia em bovinos adaptados ou não com uréia dietética e submetidos a diferentes períodos de privação
This study was carried out to investigate the recommendation stated by Huber (1978) that there is a need to re-adapted cattle that were fed previously with dietary urea, but subsequently were deprived of this nutrient for more than 3 d. Twenty four steers fed a low crude protein ration, deprived of urea, were randomly distributed into 5 equal groups, and wer
Publicado em: 2005
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3. ESTUDO DA INTERAÇÃO METAL-SUPORTE EM CATALISADORES DE RUTÊNIO PROMOVIDOS POR BÁRIO E CÉSIO PARA A SÍNTESE DE AMÔNIA / THE STUDY OF METAL-SUPPORT INTERACTION ON BARIUM AND CESIUM PROMOTED RUTHENIUM CATALYSTS FOR THE AMMONIA SYNTHESIS
The industrial ammonia synthesis process uses a triple promoted iron catalyst, operating at drastic temperature conditions between 673K and 973K, and high pressure (300atm). New catalysts have been studied, replacing iron, to increase NH3 production. The main advantage of Ru-based catalysts is that they are less sensitive to poisoning by ammonia than Fe-base
Publicado em: 2004
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4. Administration of standard and high doses of extruded grain with urea or prilled urea to cattle: a clinical, toxicological and laboratory exam analysis / Administração de doses padrão e alta de uréia extrusada ou granulada em bovinos: uma análise clínica-toxicológica e laboratorial
To compare the toxicity potential of prilled urea (G) and extruded grain with urea (E), both were administered all at once in two different doses, high (A; 0,5 g/kg BW) or standard (B; 0,22 g/kg BW), to 24 steers divided into four groups of six animals, which had never been fed nonprotein nitrogen compounds. For 240 min after the administration of urea the f
Publicado em: 2003
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5. Intoxicação por amônia em bovinos e ratos: o desempenho renal na desintoxicação e o emprego de tratamentos alternativos / Ammonia poisoning in cattle and rats: the role of the kidneys for detoxifying ammonia and use of alternative treatments
Para estudar o papel dos rins e o de tratamentos alternativos na desintoxicação da amônia quatro trabalhos foram realizados em ratos e bovinos. Ratos Wistar (n=367) foram utilizados para testar oito tratamentos (O= aminoácidos do ciclo da uréia; F= furosemida; H= solução hidratante, O+F; H+F, O+H; O+F+H, C= controle) no combate à intoxicação por am
Publicado em: 2002
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6. Ammonia Accumulation and Inhibition of Photosynthesis in Methionine Sulfoximine Treated Spinach
Ammonia accumulation and photosynthetic rate inhibition took place when spinach leaf tissue was supplied with methionine sulfoximine (MSO), an inhibitor of glutamine synthetase. This effect was observed in the absence of significant inorganic nitrogen reduction or an exogenous source of ammonia. Both the time lag prior to the initial photosynthetic rate decr
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7. Physiology of lysine permeases in Saccharomycopsis lipolytica.
Two active lysine transport systems were detected in Saccharomycopsis lipolytica. No excretion of lysine out of the cells could be obtained, even by chasing with L-lysine or by poisoning with sodium azide. The kinetic properties of one of the permeases, the high-affinity lysine permease, were studied in detail. Its Km was 1.91 +/- 0.23 X 10(-5) M. It proved
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8. Accumulation of α-Keto Acids as Essential Components in Cyanide Assimilation by Pseudomonas fluorescens NCIMB 11764
Pyruvate (Pyr) and α-ketoglutarate (αKg) accumulated when cells of Pseudomonas fluorescens NCIMB 11764 were cultivated on growth-limiting amounts of ammonia or cyanide and were shown to be responsible for the nonenzymatic removal of cyanide from culture fluids as previously reported (J.-L. Chen and D. A. Kunz, FEMS Microbiol. Lett. 156:61–67, 1997). The
American Society for Microbiology.