Nitrogenous Compounds
Mostrando 13-24 de 80 artigos, teses e dissertações.
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13. The influence of the body weight and the characteristics of the carcass about the creatinine excretion and the use of spot sample of urine to estimate the excretion of purine derivatives and the nitrogenous compounds in nelore heifers / Influência do peso corporal e das características de carcaça sobre a excreção de creatinina e utilização de coleta spot de urina para estimar a excreção de derivados de purinas e de compostos nitrogenados em novilhas nelore
This study aimed to evaluate the relation between body weight, the amount of muscle in the carcass, the rib eye area and subcutaneous fat thickness with the daily excretion of creatinine in Nelore heifers of different weights. We also assessed the total creatinine excretion at intervals of 4 and 24 hours and the relation of purine derivatives (PD), urea (U)
Publicado em: 2009
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14. Desempenho nutricional de bovinos em pastejo durante o período das águas com suplementação protéica ou protéico-energética / Nutritional performance of cattle under grazing during rainy season with protein or protein-energy supplementation
A presente tese foi elaborada com base em dois experimentos com bovinos suplementados em regime de pastejo em capim-braquiária (Brachiaria decumbens Stapf.) durante o período das águas. No primeiro experimento, objetivou-se avaliar os efeitos de diferentes formas químicas de compostos nitrogenados (protéicos e não protéicos) e de carboidratos (amilác
Publicado em: 2009
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15. Consumo e digestibilidade em bovinos em pastejo com forragem de baixa qualidade recebendo níveis crescentes de compostos nitrogenados suplementares / Intake and digestibility in cattle grazing a low quality grass pasture and supplemented with increasing levels of nitrogenous compounds
The objective of this work was to evaluate the effects of supplementation with nitrogenous compounds on intake, digestibility, and microbial protein synthesis in cattle under grazing during dry season. Five Holstein x Zebu steers fitted with rumen and abomasums canullae and with average initial live weight (LW) of 236kg, were used. The animals grazed five Br
Publicado em: 2008
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16. Hipótese evolutiva sobre a assimilição de compostos nitrogenados por metazoários: a limitação α-aminoácidos / Evolutionary hypothesis on the nitrogenous compounds uptake by metazoan: the limitation to α-aminoacids
Metabolic pathway evolution models are molecular and computational based, and do not take account the physiological and ecological contexts in which organisms are inserted. Thus using the nitrogen metabolism as a platform, an evolutionary hypothesis on the α-amino acids utilization by metazoans was proposed. The objective of the present work is to trace
Publicado em: 2008
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17. Estudo geoquímico da bacia do ama e avaliação da qualidade de água
The quality of water in a drainage basin reflects the natural processes of a water catchment and the changes of environmental conditions reflect on physical and chemical water chemistry. The present work was realized in two drainages on Gama Catchment, Gama brook and Cedro stream, whose waters discharge into Paranoá Lake (Brasília, Federal District). The a
Publicado em: 2008
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18. In vitro degradation dynamics of neutral detergent fiber of signal grass according to supplementation with different levels and sources of nitrogenous compounds / Dinâmica de degradação in vitro da fibra em detergente neutro de capim-braquiária em função de suplementação com diferentes níveis e fontes de compostos nitrogenados
Efetuaram-se dois experimentos in vitro com o objetivo de avaliar a dinâmica de degradação in vitro da fibra em detergente neutro (FDN) de forragem tropical de alta e baixa qualidade em função da suplementação com diferentes níveis e fontes de compostos nitrogenados. Nos dois experimentos utilizou-se como fonte de proteína verdadeira a caseína e de
Publicado em: 2008
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19. Evaluation in vitro and vivo of the cheese whey fermented by the consortium of bacteria Enterococcus faecium and Veilonella parvula in the feeding of ruminants / Avaliação in vitro e in vivo do soro de leite fermentado pelo consórcio de bactérias Enterococcus faecium e Veilonella parvula na alimentação de ruminantes
The industry of dairy products is gradually growing along the last years, standing out the cheese production. One of the by-products obtained of the production of the cheese is the cheese whey. This one presents high demand biochemistry of oxygen (DBO), that when being discarded in rivers or public sewers, it represents important environmental problem. Like
Publicado em: 2008
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20. Frações dos compostos nitrogenados associados à parede celular em forragens tropicais
The total and undegradable fractions of nitrogenous compounds associated to cell wall organic matrix in some tropical forages were evaluated. Samples of corn silage, elephantgrass silage and sugarcane were used. Neutral detergent insoluble nitrogenous compounds were divided in three different fractions associated with: hemicellulose (HN), cellulose (CN), and
Arquivo Brasileiro de Medicina Veterinária e Zootecnia. Publicado em: 2007-02
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21. Intake, digestibility, and rumen dynamics in cattle fed low- quality tropical forage and supplemented with nitrogenous compounds and (or) carbohydrates / Consumo, digestibilidade e dinâmica ruminal em bovinos alimentados com forragem tropical de baixa qualidade e suplementados com compostos nitrogenados e/ou carboidratos
The objective in this work was to evaluate the effects of supplementation with nitrogenous compounds and (or) carbohydrates on intake, digestibility, microbial protein synthesis and neutral detergent fiber (NDF) dynamics in rumen, in cattle fed low-quality tropical forage. Four Holstein x Zebu heifers, with average live weight of 231.9 kg and fitted with rum
Publicado em: 2007
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22. Intake, digestibility, and rumen dynamics in cattle fed low-quality tropical forage and supplemented with nitrogenous compounds / Consumo, digestibilidade e dinâmica ruminal em bovinos alimentados com forragem tropical de baixa qualidade suplementados com compostos nitrogenados
The aim of this work was to evaluate the effects of supplementation with nitrogenous compounds on intake, digestibility, nitrogenous compounds balance, efficiency of microbial synthesis, and neutral detergent fiber (NDF) rumen dynamics in cattle fed low-quality forage. Five crossbred heifers, with average live weight of 191 kg and fitted with rumen canullae,
Publicado em: 2007
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23. 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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24. Alterations in the metabolism of nitrogenous compounds in Calopogonium mucunoides in response to different nitrogen sources : effects on nodulation and fixation / Alterações no metabolismo de compostos nitrogenados em Calopogonium mucunoides em resposta a diferentes fontes de nitrogênio : efeitos na nodulação e na fixação
Calopogonium mucunoides é uma leguminosa tropical típica de cerrado, sendo muito utilizada em adubação verde e como forrageira. Possui alta capacidade de fixação de nitrogênio, sendo cultivada em solos de baixo pH e pouca fertilidade; e boa resistência à seca, mas não tolera baixas temperaturas. Poucos são os estudos acerca do metabolismo de nitro
Publicado em: 2007