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Search Results: 1 - 10 of 408734 matches for " Carlos Magno C. de;Barbosa "
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Fotossensibiliza??o hepatógena em eqüinos pela ingest?o de Brachiaria humidicola (Gramineae) no Estado do Pará
Barbosa, José Diomedes;Oliveira, Carlos Magno C. de;Tokarnia, Carlos Hubinger;Peixoto, Paulo Vargas;
Pesquisa Veterinária Brasileira , 2006, DOI: 10.1590/S0100-736X2006000300003
Abstract: data on the clinical-pathological aspects and on the epidemioloy of a disease in horses, characterized by phototsensitization, which occurs in northeastern of pará, brazil, are presented. of a total of 40 horses examined clinically, post-mortem examination was performed on seven. due to the characteristic lesions found on the non-pigmented skin, the macroscopic and histological alterations in the liver, and knowing that brachiaria grasses contain saponins with toxic properties, which cause liver lesions and photosensitization in cattle and sheep, it is concluded that this disease in horses is caused by grassing exclusively brachiaria humidicola.
Fotossensibiliza o hepatógena em eqüinos pela ingest o de Brachiaria humidicola (Gramineae) no Estado do Pará
Barbosa José Diomedes,Oliveira Carlos Magno C. de,Tokarnia Carlos Hubinger,Peixoto Paulo Vargas
Pesquisa Veterinária Brasileira , 2006,
Abstract: S o apresentados os aspectos clínico-patológicos e epidemiológicos de doen a, caracterizada por fotossensibili-za o, que ocorre em eqüinos no nordeste do Estado do Pará. De um total de 40 animais examinados clinicamente, sete foram necropsiados, e tiveram fragmentos de órg os examinados microscopicamente. Em virtude das les es características encontradas, sobretudo nas partes despigmentadas da pele, das le-s es hepáticas macro e microscópicas, e sabendo-se que as brachiárias, de uma maneira geral, encerram saponinas com propriedades tóxicas, que causam altera es hepáticas e fo-tossensibiliza o em bovinos e ovinos, conclui-se, que essa doen a fotossensibilizante foi determinada pelo pastoreio de Brachiaria humidicola, alimenta o exclusiva dos animais enfermos.
Aspectos epidemiológicos e clínico-patológicos comparados da intoxica??o por Arrabidaea bilabiata (Bignoniaceae) em búfalos e bovinos
Tokarnia, Carlos Hubinger;Barbosa, José Diomedes;Oliveira, Carlos Magno C. de;Brito, Marilene de Farias;Oliveira, Roseane B. de;Barbas, Luiz André L.;
Pesquisa Veterinária Brasileira , 2004, DOI: 10.1590/S0100-736X2004000200005
Abstract: experiments showed that the clinical and pathological pictures were essentially the same, but the buffalo was at least twice more resistant than the bovine to the toxic effect of arrabidaea bilabiata (sprague) sandw. it was also shown that the young leaves are twice (october, end of the dry season) or one and a half (may, end of the rainy season) more toxic than the mature leaves, and that the plant is more toxic in october. these data indicate that the smaller incidence of poisoning by plants of the group that causes sudden death in buffaloes in the amazon region is, in part, due to the greater resistance of this animal species to the toxic action of the plant. also important seems to be the coincidence of the preferential habitat of the buffalo (flooded areas) with the habitat of a. bilabiata, less toxic than palicourea marcgravii st.hil. which is a plant of the non-flooded areas, the preferential habitat of cattle.
Estudo comparativo da toxidez de Palicourea juruana (Rubiaceae) para búfalos e bovinos
Oliveira, Carlos Magno C. de;Barbosa, José Diomedes;Macedo, Raquel S. Cavaleiro de;Brito, Marilene de Farias;Peixoto, Paulo Vargas;Tokarnia, Carlos Hubinger;
Pesquisa Veterinária Brasileira , 2004, DOI: 10.1590/S0100-736X2004000100007
Abstract: an experimental study was performed to establish the toxicity of palicourea juruana for buffaloes and to add new data on the toxicity of this plant for cattle. the clinical and pathological pictures were similar, but a comparison of the lethal doses for buffaloes (1-2g/kg) and cattle (0.25g/kg) shows that the buffalo is at least 4 times more resistant. in experiments performed 10 years earlier with the fresh leaves - collected on the same farm in july, at the beginning of the dry season, only 2 months later than in this second experimental series - the lethal dose for cattle was 2 g/kg. no explanation was found for the extremely high toxicity of the plant observed in the present study.
Intoxica??o por Cestrum laevigatum (Solanaceae) em bubalinos
Barbosa, José Diomedes;Oliveira, Carlos Magno C.;Pinheiro, Cleyton;Lopes, Cinthia T.A.;Marquiore, Debora;Brito, Marilene de Farias;Yamasaki, Elise Miyuki;Tokarnia, Carlos Hubinger;
Pesquisa Veterinária Brasileira , 2010, DOI: 10.1590/S0100-736X2010001200008
Abstract: based on the history and clinical and pathological data, as well as on inspection of the pastures, a mortality of buffaloes in the county of itaguaí/rj, brazil, was diagnosed as poisoning by cestrum laevigatum schlecht., a plant of the solanaceae family. the poisoning was reproduced in two buffaloes. dried leaves of the shrub were administered by hand, in single doses corresponding to 20g/kg and 40g/kg of the fresh leaves, to four buffaloes of the murrah breed. the dose corresponding to 40g/kg of the fresh leaves caused signs of poisoning, as apathy, anorexia, absence of rumen movements, dysmetria, excitement and aggressiveness, followed by death of the two buffaloes within 65 hours after administration. from the two buffaloes that received the corresponding dose of 20g/kg of the fresh plant, one presented clinical signs characterized mainly by decrease of the rumen movements, but recovered 97h22min after the administration; the other buffalo did not show symptoms of poisoning. laboratory analyses for biochemical evaluation accused hepatic alterations. in one buffalo that died, the main macroscopic finding was an orange liver with a clear nutmeg appearance; in the second buffalo, the orange liver had no nutmeg appearance. other alterations found in these two buffaloes were slight edema of the gall bladder wall, a slightly reddish mucous membrane of the abomasum, extensive echymoses in the endocard of the left ventricle and few petechiae in the endocard of the right ventricle; the abomasum content was slightly dry, and the large intestine had little and slightly dry contents wrapped by mucus. histopatological examination revealed severe coagulative necrosis of the liver parenchyma in the centrolobular and intermediate lobular areas, with a halo of vacuolated hepatocytes at the periphery of the necrotic areas.
Etiologia e perfil de sensibilidade de bactérias isoladas de ovelhas com mastite na regi?o nordeste do estado do Pará
Silva, Natália da Silva e;Silveira, José Alcides S. da;Pinheiro, Cleyton Prado;Sousa, Melina Garcia S. de;Oliveira, Carlos Magno C.;Mendon?a, Carla L. de;Duarte, Marcos D.;Barbosa, José Diomedes;
Pesquisa Veterinária Brasileira , 2010, DOI: 10.1590/S0100-736X2010001200007
Abstract: the objective of this paper was to study the etiology of mastitis in sheep at northeastern pará, and to establish the sensitivity of isolated bacteria to antibiotics. a total of 176 santa inês nursing sheep kept in semi-intensive system from seven properties were examined. the mammary gland was clinically examined and the milk was submitted to the caneca telada test, the california mastitis test (cmt), bacteriological examinations and antibiograms. out of the 352 mammary halves (176 sheep), 5.9% (21/352) had clinical mastitis and by the cmt test, 7.39% (26/352) had subclinical mastitis and 86.64% (305/352) mammary halves did not have mastitis. most of the animals with mastitis were in the second third of the lactation period, had less kids and more lactation periods. the following bacteria were isolated from the clinical mastitis staphylococcus spp. coagulase negative (42,9%); staphylococcus aureus (9.52%); streptococcus spp. (4.76%) and escherichia coli (4.76%). were observed associations of staphylococcus aureus and streptococcus spp. (4,76%); staphylococcus spp. coagulase negative nonhemolytic, staphylococcus spp. coagulase negative hemolytic and staphylococcus spp. coagulase negative non hemolytic pigment (4.76%). already in subclinical mastitis the bacteria isolated were staphylococcus spp. coagulase negative (26.9%); staphylococcus aureus (15.,4%); streptococcus spp. (7.69%); escherichia coli (7.69%) and citrobacter freundii (11.5%). were observed associations of staphylococcus spp. coagulase negative nonhemolytic and staphylococcus spp. coagulase negative hemolytic (3.85%). the most efficient antibiotics for the gram positive agents were penicile/novobiocine (100%), cefalotine (100%) and florfenicol (100%) and for the citrobacter freundii were ampicilina (100%) and florfenicol (100%). in relation to escherichia coli, 66.7% of isolates to ampicillin, cephalothin, florfenicol and tetracycline were resistant. mastitis is present in sheep in the state of pará, an
Les?es traumáticas de pele causadas pelos espinhos de Mimosa pudica e Mimosa debilis em equídeos
Reis, Alessandra S. Belo;Duarte, Marcos Dutra;Sousa, Melina G.S. de;Freitas, Nayra Fernanda de Q.R.;Yamasaki, Elise M.;Silva, André G. Marciel e;Oliveira, Carlos Magno C.;Barbosa, José Diomedes;
Pesquisa Veterinária Brasileira , 2011, DOI: 10.1590/S0100-736X2011000900008
Abstract: studies on the nature and cause of skin lesions in horses on a farm in the county of castanhal, northeastern para, brazil were conducted. these were visits to the farm, epidemiological studies, blood sample collections, skin biopsies, and inspection of the pasture. the study included 25 equidae, 14 males and 11 females, six months to eight years old. the animals showed ulcerative lesions of irregular borders on the head (nose, muzzle, upper and lower lips), in the oral cavity (buccal vestibule and gum) and on the limbs (billets, metacarpals and metatarsals and scapular-humeral joint). the histopathological examination revealed foci of cutaneous erosions with epidermal necrosis, spongiosis and vesicular degeneration of the remaining epidermis, and mild inflammatory infiltrate in the underlying dermis, consisting predominantly of macrophages and, to a lesser degree, eosinophils. the inspection of the pasture, which consisted of brachiaria humidicola, revealed a heavy invasion by two plants provided with spines, mimosa pudica and mimosa debilis, of the leguminosae mimosoideae family. it was concluded that the skin lesions were caused by traumatic action of the spines of mimosa pudica and mimosa debilis.
Fracionamento e cinética da degrada??o in vitro dos carboidratos constituintes da cana-de-a?úcar com diferentes ciclos de produ??o em três idades de corte
Fernandes, Alberto Magno;Queiroz, Augusto César de;Pereira, José Carlos;Lana, Rogério de Paula;Barbosa, Marcio Henrique Pereira;Fonseca, Dilermando Miranda da;Detmann, Edenio;Cabral, Luciano da Silva;Pereira, Elzania Sales;Vittori, Andréa;
Revista Brasileira de Zootecnia , 2003, DOI: 10.1590/S1516-35982003000700028
Abstract: the objective of this work was to determine the fractions and rates of degradation of the carbohydrates for sugar cane, with different cycles of production (early and intermediate), in three cut times (426, 487 and 549 days). the total carbohydrates (tc), non-fibrous carbohydrates (nfc), fractions potentially digestible (b2) and indigestible (c) of the neutral detergent fiber (ndf), corrected for ashes and protein (ndfcp), were obtained. the kinetic parameters of nfc and fraction b2 were obtained from the technique of in vitro gas production. the contents of tc and fraction b2 did not differ among varieties, even though the early ones showed higher contents of the fraction c and smaller of nfc. by establishing a relationship between concentration of obtained lignin and observed c fraction, with adjustment of equation of simple linear regression, without intercept, it was obtained the value of 4.38, that differed of 2.4, suggested by the cornell system. therefore, for sugar cane, the fraction c could be estimated from the lignin multiplied by 4.38. the progress of the cut time caused linear increase of the c fraction and reduction of b2, without interaction with the cycle of production; although it has been linear, the increment was relatively small, 6% of the fraction c, when compared to the other tropical gramineas, with the same cut time. the kinetic parameters did not show differences among varieties; however, the estimated average digestion rates for nfc were lower than the suggested by the cornell system. the adjustment of the curve of cumulative gas production (bicompartimental system) was shown appropriate because the sugar cane has fractions of available carbohydrate very different with relationship to the degradation rate (cnf and b2). by presenting high content of nfc (sucrose) and low rate of degradation of the b2 fraction, researches with different sources of n to supplement sugar cane based diets are necessary.
Composi??o químico-bromatológica de variedades de cana-de-a?úcar (Saccharum spp L.) com diferentes ciclos de produ??o (precoce e intermediário) em três idades de corte
Fernandes, Alberto Magno;Queiroz, Augusto César de;Pereira, José Carlos;Lana, Rogério de Paula;Barbosa, Marcio Henrique Pereira;Fonseca, Dilermando Miranda da;Detmann, Edenio;Cabral, Luciano da Silva;Pereira, Elzania Sales;Vittori, Andréa;
Revista Brasileira de Zootecnia , 2003, DOI: 10.1590/S1516-35982003000400025
Abstract: the objectives of this work were to determine the chemical composition, the potentialy degradable fraction of ndf (b2) and undegradable fraction (c) and to estimate the ruminal fill of sugar cane with different cycles of production (early and intermediate), in three cut times (426, 487 and 549 days). the laboratorial analysis consisted in dry matter (dm), organic matter, ash, crude protein (cp), ether extract, lignin, neutral detergent fiber (ndf), neutral detergent fiber corrected for ash and protein, acid detergent fiber (adf), neutral detergent insoluble protein, acid detergent insoluble protein and neutral detergent protein soluble. the tdn was calculated by chemical composition. the degradable and undegradable fractions, and fiber digestion rate, as well as the ruminal fill were estimated by kinetic parameters obtained throught in situ incubation. the advanced cut time increased the dm in 9.5%. the intermediate varieties presented higher tdn than early varieties, which had the highest contents of ndf and adf, whose respective values were 487.56 and 471.03, and 287.87 and 247,54 g/kg dm for the early and intermediate varieties, respectively. the tdn increased linearly with the cut time, varying from 62.45 to 63.50%; however the ndf and adf contents presented quadratic behavior. the early varieties presented higher content of cp than the intermediate only in the cut time of 549 days; contrarily, the brix of the sugar cane was superior to the intermediate varieties in the last cut. the early varieties presented larger total ruminal fill and lower fiber digestion rate. the degradable fraction of the fiber was reduced and the undegradable fraction was linearly increased with the age of the plants.
Composi??o químico-bromatológica, fracionamento de carboidratos e cinética da degrada??o in vitro da fibra de três variedades de cana-de-a?úcar (Saccharum spp.)
Azevêdo, José Augusto Gomes;Pereira, José Carlos;Queiroz, Augusto César de;Carneiro, Pedro Crescêncio Souza;Lana, Rogério de Paula;Barbosa, Márcio Henrique Pereira;Fernandes, Alberto Magno;Rennó, Francisco Palma;
Revista Brasileira de Zootecnia , 2003, DOI: 10.1590/S1516-35982003000600019
Abstract: the objectives of this work were to determine the chemical-bromatological composition, to determine the carbohydrates fractions and to estimate the kinetic variables of degradation of the fibrous (fc) and no-fiber carbohydrates (nfc), of three nutritional divergence sugarcane varieties. the studied varieties were sp80-1842, sp79-1011 and rb845257. the varieties of intermediary production cycle showed greater values of ndf and adf compared to the variety of early cycle. the observed fdn/pol (sucrose index) ratio was, respectively, 2.73; 2.82 and 2.25 for the sp80-1842, rb845257 and sp79-1011 varieties. the sp79-1011 variety presented smaller c and greater b2 carbohydrate fractions (27.78 and 33.26%). it was possible to observe difference, using the gravimetric technique, for the lag time and the effective degradation of ndf, with higher values for sp 791011 variety (7.90 h and 10.30%, respectively). however, for the gas production technique, there was only a significant effect, for the estimate of the maximum gas volume parameter for nfc, with higher values for the varieties sp79-1011 and rb845257 of intermediary production cycle. the sp79-1011 variety was the one that showed better productive characteristic, composition chemical-bromatological, besides better values of the kinetics variables of degradation of the fiber (fc) and non fiber (cnf) carbohydrates. the gas production technique was more reliable than the results observed by the gravimetric technique.
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