Consulta: subjectFacets:"Nucleotides"
Registros recuperados: 20
Data/hora: 05/06/2024 18:31:19

Adición de oligomananos o nucleótidos a dietas con baja proteína para cerdos en finalización
Provedor de dados: 32
Autores: Rivera Urbina, Angélica.
La porcicultura requiere de mayores ingresos y reducir la emisión de contaminantes. Para ello se debe aumentar la eficiencia en la utilización del alimento. Como alternativas se ha planteado el uso de promotores del crecimiento ó reducir el nivel de proteína en la dieta hasta por cuatro unidades porcentuales sin afectar la respuesta productiva; sin embargo, los resultados han sido inconsistentes.  Por ello se realizaron dos experimentos para evaluar la respuesta productiva, las características de la canal, y la concentración de urea en plasma de cerdos machos castrados híbridos (YorkshirexDurocxPietrain) en finalización, alimentados con dietas bajas en proteína adicionadas con prebióticos. En el experimento 1 se utilizaron 32 animales de 56.56 ± 5.17 kg de...
Tipo: Tesis
Palavras-chave: Cerdos en finalización; Baja proteína; Oligomananos; Nucleótidos Finishing barrows; Low-protein diets; Mannan-oligosaccharides; Nucleotides.
Ano: 2012
URL: http://hdl.handle.net/10521/1084

Adición de oligomananos o nucleótidos a dietas con baja proteína para cerdos en finalización
Provedor de dados: 32
Autores: Rivera Urbina, Angélica.
La porcicultura requiere de mayores ingresos y reducir la emisión de contaminantes. Para ello se debe aumentar la eficiencia en la utilización del alimento. Como alternativas se ha planteado el uso de promotores del crecimiento ó reducir el nivel de proteína en la dieta hasta por cuatro unidades porcentuales sin afectar la respuesta productiva; sin embargo, los resultados han sido inconsistentes.  Por ello se realizaron dos experimentos para evaluar la respuesta productiva, las características de la canal, y la concentración de urea en plasma de cerdos machos castrados híbridos (YorkshirexDurocxPietrain) en finalización, alimentados con dietas bajas en proteína adicionadas con prebióticos. En el experimento 1 se utilizaron 32 animales de 56.56 ± 5.17 kg de...
Tipo: Tesis
Palavras-chave: Cerdos en finalización; Baja proteína; Oligomananos; Nucleótidos; Maestría; Ganadería; Finishing barrows; Low-protein diets; Mannan-oligosaccharides; Nucleotides.
Ano: 2008
URL: http://hdl.handle.net/10521/1328

Características seminales de verracos alimentados con dietas adicionadas con ácido linoleico conjugado o nucleótidos, y comportamiento sexual de verracos castrados tratados con PGF2α.
Provedor de dados: 32
Autores: Zamora Zamora, Vicente.
La composición nutrimental de la dieta afecta las características del semen y composición de nutrientes del espermatozoide. El comportamiento sexual en machos no está completamente relacionado con las hormonas esteroides producidas en el testículo. Se realizaron dos experimentos para evaluar el potencial de la adición de ácido linoleico conjugado (ALC; experimento 1) o nucleótidos (experimento 2) a dietas para verracos para mejorar las características seminales y modificar el perfil de ácidos grasos del espermatozoide. Adicionalmente se evaluó el comportamiento sexual y concentración de hormonas específicas en verracos castrados tratados con PGF2α (experimento 3). En el experimento 1, los tratamientos evaluados fueron: T1) Dieta testigo y T2) Dieta con 1%...
Palavras-chave: ALC; Calidad seminal; Comportamiento reproductivo; Nucleótidos; Verracos; CLA; Nucleotides; Semen quality; Sexual behavior; Doctorado; Ganadería.
Ano: 2010
URL: http://hdl.handle.net/10521/199

Características seminales de verracos alimentados con dietas adicionadas con ácido linoleico conjugado o nucleótidos, y comportamiento sexual de verracos castrados tratados con PGF2α.
Provedor de dados: 32
Autores: Zamora Zamora, Vicente.
La composición nutrimental de la dieta afecta las características del semen y composición de nutrientes del espermatozoide. El comportamiento sexual en machos no está completamente relacionado con las hormonas esteroides producidas en el testículo. Se realizaron dos experimentos para evaluar el potencial de la adición de ácido linoleico conjugado (ALC; experimento 1) o nucleótidos (experimento 2) a dietas para verracos para mejorar las características seminales y modificar el perfil de ácidos grasos del espermatozoide. Adicionalmente se evaluó el comportamiento sexual y concentración de hormonas específicas en verracos castrados tratados con PGF2α (experimento 3). En el experimento 1, los tratamientos evaluados fueron: T1) Dieta testigo y T2) Dieta con 1%...
Palavras-chave: ALC; Calidad seminal; Comportamiento reproductivo; Nucleótidos; Verracos; CLA; Nucleotides; Semen quality; Sexual behavior; Doctorado; Ganadería.
Ano: 2010
URL: http://hdl.handle.net/10521/199

Respuesta de cerdos en iniciación alimentados con dietas estándar o con baja proteína adicionadas con manano-oligosacáridos o nucleótidos.
Provedor de dados: 32
Autores: Salinas Sánchez, Eva.
Se realizaron dos experimentos para evaluar la respuesta productiva (ganancia diaria de peso, GDP; consumo diario de alimento, CDA; conversión alimenticia, CA; peso final, Pf; ganancia de carne magra, GCM), las características de la canal (grasa dorsal final, GDf; área del músculo longissimus final, AMLf; porcentaje de carne magra final, PCMf) y la concentración de urea en plasma (Exp. 2) en cerdos en iniciación alimentados con dietas con base en sorgo-pasta de soya bajas en proteína (DBP) y con proteína estándar con la adición de AA sintéticos y dos tipos de aditivos en sustitución del antibiótico. En el Exp. 1, se utilizaron 32 cerdos machos castrados con 13.5+1.48 kg de peso, quienes recibieron dos concentraciones de PC (20.0 y 14.5%) y cuatro de...
Palavras-chave: Cerdos en iniciación; Dietas con baja proteína; Manano-oligosacáridos; Nucleótidos; Nursery pigs; Low-protein diets; Mannan-oligosacharides; Nucleotides; Maestría; Ganadería.
Ano: 2011
URL: http://hdl.handle.net/10521/409

Химический состав зеленой водоросли  Enteromorpha Intestinalis (L.) Link  из обрастаний причалов Севастопольских бухт (Черное море)
Provedor de dados: 13
Autores: Муравьева, И. П.
Изучена сезонная динамика химического состава зеленой водоросли Enteromorpha intestinalis (L.) Link  (белок, аминокислоты, свободные нуклеотиды, РНК, ДНК, кислоторастворимые, щелочерастворимые, трудногидролизуемые углеводы, моносахариды и полисахариды,  липиды, углеводороды, хлорофиллы "а" и "в", каротиноиды) из двух бухт Севастополя (Черное море) - Нефтегавани (загрязненный район) и Казачьей (условно чистый). Энтероморфа из Нефтегавани во все сезоны  содержит больше свободных нуклеотидов, ДНК, РНК, липидов, углеводородов и пигментов, но отличается меньшим содержанием углеводов по сравнению с водорослями из б. Казачьей.
Tipo: Journal Contribution
Palavras-chave: Макрофиты; Сезонная динамика; Белок; Углеводы; Липиды; Нуклеотиды; Загрязнение; Pollution; Carbohydrates; Lipids; Nucleotides; Protein; Macrophytes Lipids Carbohydrates Proteins Nucleotides Pollution Carbohydrates Pollution Nucleotides Lipids Proteins http://aims.fao.org/aos/agrovoc/c_1300 http://aims.fao.org/aos/agrovoc/c_6077 http://aims.fao.org/aos/agrovoc/c_5259 http://aims.fao.org/aos/agrovoc/c_4362 http://aims.fao.org/aos/agrovoc/c_6259.
Ano: 2002
URL: http://repository.ibss.org.ua/dspace/handle/99011/388

Oyster adenytate energy charge: response to levels of food
Provedor de dados: 5
Autores: Moal, Jeanne; Le Coz, Jean-rene; Samain, Jean-francois; Daniel, Jean-yves; Bodoy, Alain.
Adenylatc Encrgy Charge (AEC) values of Crassostrea gigas (9 and 18 months old) cultured in ponds in Marennes-Oléron Bay (Atlantic coast, France) are reported. Two ponds were loaded with two different initial oyster biomasses in order to obtain different food conditions. The growth of oysters was different in the two ponds which corroborated the effectivences of attaining different food conditions. AEC level was different depending on the pond and was therefore related to food availability per unit oyster biomass. Well-fed oysters exhibited greater AEC values than poorly-fed oysters, throughout thc study. Information on nutritional situations for wild or cultured populations can therefore be obtained by AEC. In cach pond, the seasonal AEC variations were...
Tipo: Text
Palavras-chave: Charge énergétique adénylique; Crassostrea gigas; Nutrition; Nucléotides; Adenylate energy charge; Crassostrea gigas; Food; Nucleotides.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/00038/14882/12202.pdf

La detection des effets subletaux des pollutions: Utilisation in situ d'un indice biochimique, la charge energetique
Provedor de dados: 5
Autores: Sylvestre, C; Batrel, Y; Legal, Y.
Marine water management implies the provision of environmental evolution. This can be seen with tests giving information on organism health. After a presentation of biochemical parameters (energetic charge) the authors describe the technique used and the results obtained with Nassarius reticulatus and Crangon crangon . In practice, the evolution of ratio of energetic charge to total nucleotides is a signal of imbalance in the ecosystem.
Tipo: Text
Palavras-chave: Nassarius reticulatus; Gastropoda; Crangon crangon; Malacostraca; Biochemical analysis; Nucleotides; In situ measurements; Estuarine organisms; Sublethal effects; Pollution tolerance.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1306.pdf

Approche de l'état physiologique de l'huître creuse Crassostrea gigas au cours d'un cycle saisonnier à Marennes-Oléron
Provedor de dados: 5
Autores: Moal, Jeanne; Samain, Jean-francois; Bodoy, Alain; Le Coz, Jean-rene.
The energy charge was measured for two Crassostrea gigas populations, during an annual survey at Marennes Oleron, to appreciate the condition of health of these oysters. It is assumed that the actual decrease in production of this area is related to a biomass overload which affects the oysters by lowering their scope for growth. Energy charge, an index developped by ATKINSON (1968), defines the energy equilibrium of organisms. It is the adenylic nucleotide ratio: E.C = (ATP + 1/2ADP)/ATP + ADP + AMP). We have measured this parameter to determine the state of health of these oysters. A methodological study has been conducted previously to define the conditions of sampling, conservation and extraction for a HPLC assay. The HPLC method (high performance...
Tipo: Text
Palavras-chave: Marennes Oleron; Seasonal variations; Crassostrea gigas; Physiological indice; Nucleotides; Energy charge; Marennes Oléron; Cycle saisonnier; Crassostrea gigas; Indiced physiologique; Nucléotides; Charge énergétique.
Ano: 1987
URL: http://archimer.ifremer.fr/doc/1987/publication-2869.pdf

Transformation and Regeneration of Groundnut, and Utilization of Viral Genes to Induce Resistance to Virus Diseases
Provedor de dados: 30
Autores: D.V.R.
Palavras-chave: Genes; RNA; Transgenics; Protoplasts; Groundnuts; Transgenic plants; Biotechnology; Regeneration; Genomes; Nucleotides.
Ano: 1992
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4105

Development of cost-effective SNP assays for chickpea genome analysis and breeding
Provedor de dados: 30
Autores: Varshney, R.K.,( Rajeev K. Varshney ).
Palavras-chave: Genomes; Polymorphism; Genotypes; Enzymes; Nucleotides; Chickpeas; DNA; Bioinformatics; Genetic structures; Genes.
Ano: 2007
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3282

An effective method for cloning of partial MADS-box genes related to flower development in groundnut
Provedor de dados: 30
Autores: Yuan, M.
Palavras-chave: Genes; PCR; DNA; Cloning; Transcription factors; Genomes; Transcription; Genetic structures; Nucleotides; Molecular cloning.
Ano: 2005
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3213

Effect of nucleotides on broiler performance and carcass yield
Provedor de dados: 89
Autores: Pelícia,VC; Sartori,JR; Zavarize,KC; Pezzato,AC; Stradiotti,AC; Araujo,PC; Mituo,MAO; Madeira,LA.
This study aimed at evaluating the effect of nucleotides on the performance and carcass yield of broilers fed diets with no antibiotic growth promoters (AGP), anticoccidials, or animal feedstuffs. In the trial, 600 Ross 308 male broilers were distributed in a completely randomized experimental design into six treatments with four replicates of 25 birds each. Treatments consisted of a control diet (CD), CD + AGP, CD + 0.04%, CD + 0.05%, CD + 0.06%, and CD + 0.07% nucleotides. The experimental diets did not contain anticoccidials, and birds were vaccinated against coccidiosis at three days of age. No significant differences were detected among broilers submitted to the different treatments in none of the studied parameters. Under the conditions of this...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Nucleotides; Performance.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000100004

Sources of trophic action on performance and intestinal morphometry of broiler chickens vaccinated against coccidiosis
Provedor de dados: 89
Autores: Sakamoto,MI; Faria,DE; Nakagi,VS; Murakami,AE.
The aim of this experiment was to evaluate the effect of sources of trophic action (glutamine alone, glutamine associated with glutamic acid and yeast) associated with vaccination against coccidiosis on the performance and morphometry of the small intestine of broilers. In the trial, 1,200 broiler chicks were distributed according to a completely randomized design with a 3 x 2 + 2 (trophic action x vaccination or not + control - free trophic factor) factorial arrangement, with five replicates of 30 birds each. Vaccination negatively affected performance parameters and the morphometry of the intestinal mucosa, but at the end of the experimental period, among the broilers vaccinated against coccidiosis, the group fed glutamine presented better recovery from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eimeria; Glutamine; Intestinal mucosa; Nucleotides.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400008

Yeast extract with blood plasma in diets for piglets from 21 to 35 days of age
Provedor de dados: 96
Autores: Pereira,Cinthia Maria Carlos; Donzele,Juarez Lopes; Silva,Francisco Carlos de Oliveira; Oliveira,Rita Flávia Miranda de; Kiefer,Charles; Ferreira,Aloízio Soares; Hannas,Melissa Izabel; Brustolini,Paulo César.
The objective of this study was to evaluate the inclusion of yeast extract as a partial replacemer of blood plasma in piglet diets and its effect on the performance and intestinal morphometry of pigs weaned at 21 days of age. One hundred and twenty animals were randomized into blocks, with five diets (4.0% blood plasma; 2.0% blood plasma with 0.0; 1.0; 2.0 or 3.0% yeast extract), six replicates and four pigs per experimental unit. At 35 days of age, one pig per experimental unit was slaughtered in order to evaluate duodenal and jejunal morphometry. The levels of yeast extract had a quadratic impact on daily feed intake and final weight, which increased up to the estimated level of 1.91%. Daily weight gain and feed conversion rate were not affected. A...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Intestinal mucosa; Nucleotides; Performance; Swine.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000700017

Ribonuclease Production by Aspergillus species
Provedor de dados: 59
Autores: Gomes,Eleni; Silva,Roberto da; Serzedello,Alcides.
Ribonuclease production by Aspergillus flavipes, A. sulphureus and A. fischeri in semi-synthetic medium, after 24-144 hours at 30ºC under shaking, was studied. After cultivation, the medium was separated from micelia by filtration and the resultant solution was used as enzymatic extract. The highest amount of biomass and RNase was obtained after 96 hours of cultivation. The enzymes produced by three species presented similar characteristics, with optimum temperature at 55ºC and two peaks of activity at pH 4.5 and 7.0. A. flavipes RNases were more sensitive to temperature: 50% of the initial activity was lost after 1 hour at 70ºC. After this heat treatment, RNase of A. sulphureus lost 30% of this activity and that of A. fischeri only 16%. The nucleotides...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ribonucleases; Aspergillus; Nucleotides.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141998000300008

Applications of nucleoside-based molecular probes for the in vivo assessment of tumour biochemistry using positron emission tomography (PET)
Provedor de dados: 52
Autores: Wiebe,Leonard I.
Positron emission tomography (PET) is a non-invasive nuclear imaging technique. In PET, radiolabelled molecules decay by positron emission. The gamma rays resulting from positron annihilation are detected in coincidence and mapped to produce three dimensional images of radiotracer distribution in the body. Molecular imaging with PET refers to the use of positron-emitting biomolecules that are highly specific substrates for target enzymes, transport proteins or receptor proteins. Molecular imaging with PET produces spatial and temporal maps of the target-related processes. Molecular imaging is an important analytical tool in diagnostic medical imaging, therapy monitoring and the development of new drugs. Molecular imaging has its roots in molecular biology....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Molecular biology; Molecular imaging; PET; Nucleosides; Nucleotides; Nucleic acids; Oligonucleotides; Antisense; Aptamer; Spiegelmer.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000300011

Improvement in RNA extraction from S. cerevisie by optimization in the autolysis and NH3 hydrolysis
Provedor de dados: 52
Autores: Oliveira,Antonio Martins; Oliva Neto,Pedro de.
The optimization of autolysis of Saccharomyces cerevisiae from brewery was studied aiming at the maximum ribonucleic acid extraction and yeast extract production. The best conditions for yeast autolysis was 55.2ºC, pH= 5.1 and 9.8% NaCl for 24h of processing, without the NH3 use. In these conditions, the RNA yield was 89.7%, resulting in 51.3% of dehydrated yeast extract with 57.9% protein. The use of 12.2% NH3 at 60ºC after autolysis (8h) and plasmolysis (8h) was not viable due to the reduction in the RNA yield from 89.7to78.4%. On the other hand, the thermal shock at 60ºC for 15 minutes prior to autolysis provided an increase in the yield from 89.7 to 91.4%. The autolysis, including NaCl plasmolysis in the optimized conditions was efficient, economic and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Autolysis; NaCl plasmolysis; Yeast extract; RNA extraction; Nucleotides.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000500019

Use of nucleotides in weanling rats with diarrhea induced by a lactose overload: effect on the evolution of diarrhea and weight and on the histopathology of intestine, liver and spleen
Provedor de dados: 56
Autores: Norton,R.; Leite,J.; Vieira,E.; Bambirra,E.; Moura,C.; Penna,G.; Penna,F.
Until recently, dietary sources of nucleotides were thought not to be essential for good nutrition. Certain states with higher metabolic demands may require larger amounts that cannot be provided by endogenous production. The objective of the present study was to determine the action of nucleotides on the recovery from lactose-induced diarrhea in weaned rats. Thirty-six weanling Fisher rats were divided into two groups. Group 1 received a standard diet and group 2 received a diet containing lactose in place of starch. On the 10th day, six animals per group were sacrificed for histopathological evaluation. The remaining animals were divided into two other subgroups, each with 6 animals, receiving a control diet, a control diet with nucleotides (0.05%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nucleotides; Diarrhea; Weight; Weanling rats.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000200006

Alternatives to antibiotic growth promoters for weanling pigs
Provedor de dados: 65
Autores: Santana,Marconi Bonfim de; Melo,Antonio Diego Brandão; Cruz,Daniel Ribeiro; Garbossa,Cesar Augusto Pospissil; Andrade,Carla de; Cantarelli,Vinicius de Souza; Costa,Leandro Batista.
An experiment was conducted to evaluate the addition of sodium butyrate, plant extracts and nucleotides on weanling pig performance, digestive content pH, organ morphometry, and intestinal epithelial histology. A total of 90 piglets at 21 days of age and an average initial weight of 6.35±0.34kg were used. The piglets were distributed in a randomized complete block design with five treatments, six replicates, and three animals per experimental unit. The treatments consisted of the following: Control: basal diet without antibiotic; Antibiotic: basal diet with 40mg kg-1 colistin sulfate and Additive: 1000, 1500 and 2000mg kg-1 of a combination of sodium butyrate + plant extracts + nucleotides. The experiment lasted 35 days, at which time one animal was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbal extracts; Nucleotides; Nutrition; Sodium butyrate.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000601093