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| Registros recuperados: 389 | |
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| Ribeiro,M.G.; Motta,R.G.; Paes,A.C.; Allendorf,S.D.; Salerno,T.; Siqueira,A.K.; Fernandes,M.C.; Lara,G.H.B.. |
| Relata-se a ocorrência de graves sintomas de mastite hiperaguda em vaca, causada por Klebsiella pneumoniae, na terceira semana de lactação. Descrevem-se aspectos epidemiológicos, sintomas clínicos, procedimentos de diagnóstico microbiológico, conduta terapêutica e medidas de controle. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cattle; Milk; Klebsiella pneumoniae; Endotoxin; Lipopolysaccharide. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352008000200031 |
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| Leal,C.L.V.; Méo,S.C.; Garcia,J.M.. |
| O objetivo deste trabalho foi avaliar as taxas de ativação e de clivagem de oócitos bovinos tratados com estrôncio (10mm de SrCl2), após maturação in vitro por 27-28 horas. No experimento 1, os tratamentos foram: S4 - ativação pelo estrôncio por 4 horas; S12 - ativação pelo estrôncio por 12 horas; S30 - ativação pelo estrôncio por 30 horas; e P - ativação por pulso elétrico (3 pulsos de 1,0kv/cm). No experimento 2 os tratamentos foram: PS4 - ativação combinada pelo pulso elétrico e pelo estrôncio por 4 horas; S4P - ativação pelo estrôncio por 4 horas e pelo pulso elétrico; e PS30 - ativação pelo pulso elétrico e pelo estrôncio por 30 horas. No experimento 1, todos os tratamentos apresentaram taxas similares de ativação (83-90%; P>0,05). Para clivagem, P... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Cattle; Activation; Parthenogenesis; Oocyte; Strontium; Electric pulse. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352003000300020 |
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| Santos,A.P.M.E.; Navarro,I.T.; Bracarense,A.P.F.R.L.; Freire,R.L.; Marana,E.R.M.; Ogawa,L.; Alfieri,A.A.; Freitas,J.C.; Vidotto,O.. |
| Trinta e cinco vacas de rebanhos leiteiros da região Norte do estado do Paraná, com histórico de abortamento, foram pesquisadas sorologicamente para verificar a presença de anticorpos contra Neospora caninum, Toxoplasma gondii, Leptospira spp., Brucella abortus, BHV-1 e BVDV. Vinte e uma vacas apresentaram títulos sorológicos compatíveis com infecção. Todas elas, soropositivas para N. caninum, foram também soropositivas para outros agentes infecciosos, sugerindo a possibilidade de associação desses agentes nos problemas reprodutivos de bovinos, no estado do Paraná. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cattle; Abortion; Neospora caninum; Reproductive disorder. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352005000400017 |
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| Motta,G.A.; Girardi,A.M.; Sabes,A.F.; Portugal,E.S.; Nociti,R.P.; Bueno,G.M.; Marques,L.C.. |
| ABSTRACT Osteoarthritis and osteochondrosis are highly correlated to reproductive failure in bulls. This study aimed to evaluate the carpal, tarsal and interphalangeal lesions in beef zebu bulls on semen collection regimen. Twenty-one beef cattle bulls, in a total of forty-one animals, were split into three age-based groups: animals from two to four years old (GI), from more than four to eight years old (GII) and above eight years old (GIII). The clinical findings were conformational changes of limbs, synovial effusion, peripheral venous engorgement of joints and prolonged decubitus. The total population showed moderate clinical manifestation and radiographic score. The GIII presented more severe joint lesions. Carpi and tarsi regions had discrete to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cattle; Infertility; Male; Overweight; Radiology. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000601357 |
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| Bassan,N.; Vasquez,F.; Vinuesa,M.; Cerrutti,P.; Bernardi,S.. |
| Pelo estudo das alterações morfológicas nos nódulos hemolinfóides, averiguou-se a compensação da deficiência imunológica transitória em bovinos esplenectomizados. Houve aumento acentuado de tamanho dos nódulos hemolinfóides dois meses após a esplenectomia. Além disso, ocorreu aumento significativo na espessura da zona intermediária dos nódulos hemolinfóides, bem como hiperplasia celular porém sem modificação na população e distribuição das células. As células B foram detectadas na zona central dos folículos, enquanto que as CD4+ se assentaram no córtex, na área interfolicular e nos cordões da zona intermediária. As células M2+ estavam dispersas no tecido cordonal e as CD8+ coraram-se de modo similar às células CD4+. |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Cattle; Hemal node; Splenectomy; Bovino; Nódulo hemolinfóide; Esplenectomia. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09351999000500009 |
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| Oliveira,G.; Silveira,A.W.; Sorgatto,S.; Araújo,M.A.; Antunes,T.R.; Silva,P.M.P.; Echeverria,J.T.; Pupin,R.C.; Martins,T.B.; Souza,A.I.; Aguiar,D.M.; Ramos,C.A.N.. |
| ABSTRACT Ehrlichia infections in cattle are frequent in Africa but have also been reported in Brazil and North America. This paper reports natural infection by Ehrlichia sp. associated with Babesia bigemina and Anaplasma marginale in a calf in the municipality of Campo Grande, state of Mato Grosso do Sul, Brazil, presenting polioencephalomalacia. The molecular evidence, based on a fragment of the dsb gene, indicates a species of Ehrlichia genetically related to Ehrlichia canis and other species of the genus found in the tick Rhipicephalus (Boophilus) microplus and a calf from Brazil (99 to 100% identity). It was not possible to associate the clinical signs with Ehrlichia infection due to co-infections and histological evidence of another disease. However,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tick-borne pathogen; Cattle; Ehrlichia; Neurological signs. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000601940 |
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| Antonelli,A.C.; Torres,G.A.S.; Soares,P.C.; Mori,C.S.; Sucupira,M.C.A.; Ortolani,E.L.. |
| Twelve steers were intraruminally administered a high dose (0.5g/kg BW) of urea to study the damage effect of ammonia poisoning on liver and/or muscles. Blood samples were collected to determine ammonia and activities of gammaGT, AST and CK. Eleven steers were successfully poisoned and treated properly, but one succumbed. Poisoned cattle showed high concentration of ammonia, and higher activities of AST and CK. The higher the ammonia, the greater were the activities of AST (r=0.59) and CK (r=0.61). The correlation between AST and CK was high and significant (r=0.80), but not between AST and gammaGT (r=0.19). The activities of AST and CK were higher after the beginning of the convulsive episodes due to ammonia poisoning. Those results showed that occurred... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cattle; Ammonia poisoning; Urea; Muscle damage; Liver. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352007000100002 |
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| Carvalho,S.A.; Carmo,L.S.; Abreu,E.F.; Dias,R.S.; Apolônio,A.C.M.; Santos,S.G.; Farias,L.M.; Carvalho,M.A.R.. |
| The production of Toxic Shock Syndrome Toxin-1 (TSST-1), enterotoxins and bacteriocin-like substances was evaluated in 95 strains of Staphylococcus aureus recovered from raw bovine milk (n=31) and from food samples involved in staphylococcal food poisoning (n=64). Enterotoxigenicity tests with the membrane over agar associated to optimal sensibility plate assays were performed and showed that 96.77% of strains recovered from milk and 95.31% from food samples produced enterotoxins A, B, C, D or TSST-1. Reference strains S. epidermidis, Bacillus cereus, Listeria monocytogenes, Lactobacillus casei, Pseudomonas aeruginosa, S. aureus, Salmonella Typhimurium, Escherichia coli, Enterococcus faecalis and Bacteroides fragilis were used as indicator bacteria in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cattle; Mastitis; Toxigenicity; Food poisoning; Bacteriocin. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500035 |
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| Traverso,S.D.; Loretti,A.P.; Donini,M.A.; Driemeier,D.. |
| Em setembro de 2000, três novilhas, provenientes de um pequeno rebanho de bovinos de corte, apresentaram severa depressão, tremores musculares, ato de pressionar a cabeça contra objetos e de ranger de dentes, intensa salivação, cegueira e morte. Envenenamento por chumbo foi diagnosticado com base nos sinais clínicos e em função da presença de grandes concentrações de chumbo nos rins e no fígado de um dos animais afetados. Latas de tinta velhas, presentes no potreiro onde estavam os animais e cujo conteúdo extravasava através de fendas provocadas pela ferrugem, foram identificadas como a fonte de chumbo que causou a toxicose nos animais. |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Cattle; Lead poisoning; Environmental pollutant. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352004000300023 |
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| Costa,L.F.S.; Machado,M.S.N; Oliveira,J.F.C.; Silva,J.C.; Loguercio,R.S.; Gonçalves,P.B.D.. |
| The presence of annexin II (Ann-II) during the initial stages of bovine embryo development and the regulation of Ann-II expression by retinol and insulin-like growth factor I (IGF-I) were studied. Bovine embryos at different stages of development were produced in vitro on Synthetic Oviductal Fluid (SOF) medium (control group), SOF supplemented with retinol (retinol group; 0.1ng/ml), or IGF-I (IGF-I group; 10ng/ml). The embryos were processed for mRNA extraction, cDNA production and polymerase chain reaction (PCR) using Ann-II-specific oligonucleotides. Ann-II was detected in all stages of early embryo development, except for the 16-cell stage. The blastocyst rates were significantly higher (P<0.05) in the group supplemented with retinol (37.8%, 45/119)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cattle; Annexin II; Embryo development. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352007000600023 |
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| Bueno,A.R.; Rasby,R.; Clemens,E.T.. |
| Seventy-five Angus x MARC II crossbred heifers were used to assess the effects of age at weaning on calf performance and blood constituents. Calves were weaned at 150, 210, or 270 days of age with comparisons made to their non-weaned counterparts. Changes in blood chemistry and hematology (cortisol, glucose, T3, total proteins, packed cell volume and the differential white blood cell count) were recorded on the day of weaning (day-0), and at 2, 7, 14, and 28 days post-weaning. Calves weaned at 210 days of age presented the highest plasma cortisol, glucose, and total protein concentrations during their early post-weaning period. Calves weaned at 150 days of age had significantly lower plasma T3 values. Packed cell volume and differential white blood cell... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cattle; Weaning; Stress; Blood constituents. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352003000100001 |
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| Ramos,A.A.; Camargo,L.S.A.; Sá,W.F; Ferreira,A.M.; Costa,E.P.. |
| Estudaram-se os efeitos da concentração espermática e do tempo de incubação do sêmen com ovócitos, durante a fecundação in vitro, sobre as taxas de penetração espermática, de fecundação monoespermática e de clivagem, utilizando-se sêmen de touros da raça Gir. Ovócitos (n=817) maturados in vitro foram distribuídos em tratamentos visando à fecundação in vitro (FIV), em um delineamento fatorial 2×2×2, com duas concentrações espermáticas (2 e 4×10(6) espermatozóides/ml), dois períodos de incubação (12 e 18h) e dois touros (A e B). Espermatozóides viáveis foram obtidos pela técnica de swin-up. A FIV foi realizada em meio fert-talp com heparina, em incubadora com 5% de CO2 em ar atmosférico e 95% de umidade, a 39ºC. Após inseminação, 359 ovócitos foram fixados e... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cattle; Gir; Fecundação in vitro. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352000000400013 |
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| Queiroz,P.J.B.; Queiroz,T.D.; Magalhães,P.L.; Borges,N.C.; Martins,D.B.; Moura,V.M.B.D.; Silva,L.A.F.. |
| ABSTRACT A 9-year-old Girolando dairy cow, weighing 400kg, with a history of increased volume in the right parotid region, which extended to the submandibular region, was assisted. Fine needle aspiration cytology was performed, and the cytological findings were consistent with malignant neoplasm of epithelial origin (carcinoma). Because of the unfavorable prognosis, the animal was euthanized and submitted to an anatomopathological examination. Samples of the increased parotid and affected lymph nodes were collected for histopathological evaluation. The microscopic changes were accentuated features of anaplasia, moderate cell proliferation, atypical mitotic figures, and necrosis. Stroma ranged from delicate to scirrhous, and the tumor boundaries were not... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Cattle; Cytology; Immunohistochemistry; Malignant neoplasms; Salivary glands. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000300758 |
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| Barreto Filho,J.B.; Marques Júnior,A.P.; Golgher,R.R.; Lopes,E.; Carvalho,P.H.A.; Rossi,R.O.D.S.. |
| The antiviral activity profile of the uterus and fetal membranes from bovine placenta, induced by the Newcastle disease virus (NDV) throughout gestation, was investigated. Explants of the endometrium and caruncles were collected from the uterus, and amniochorion, allantochorion and cotyledons, from fetal placenta. Tissue cultures were induced with ~6.0 hemagglutinating units (HU) of NDV. Supernatants were concentrated 20 fold, filtered in 100kDa cut-off membranes and antiviral activity was titrated in MDBK x VSV system. Tissues of the uterus did not exhibit antiviral activity, while allantochorion and amniochorion produced antiviral factors throughout gestation. Antiviral factors were not related with IFN-alpha, gamma, tau or TNF-alpha. The antiviral... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cattle; Interferon; Placenta. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352007000300006 |
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| Peixoto,M.G.C.D.; Bergmann,J.A.G.; Fonseca,C.G.; Penna,V.M.; Pereira,C.S.. |
| Data on 1,294 superovulations of Brahman, Gyr, Guzerat and Nellore females were used to evaluate the effects of: breed; herd; year of birth; inbreeding coefficient and age at superovulation of the donor; month, season and year of superovulation; hormone source and dose; and the number of previous treatments on the superovulation results. Four data sets were considered to study the influence of donors elimination effect after each consecutive superovulation. Each one contained only records of the first, or of the two firsts, or three firsts or all superovulations. The average number of palpated corpora lutea per superovulation varied from 8.6 to 12.6. The total number of recovered structures and viable embryos ranged from 4.1 to 7.3 and from 7.3 to 13.8,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cattle; Zebu; Superovulation; Environmental effects; MOET nucleus. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352006000400019 |
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| Llambí,S.; Arruga,M.V.. |
| Fragile sites (FS) are chromosomal regions where the normal compactation of chromatine is not observed. FRAXA (Fra Xq27.3, X sexual chromosome) is one of the most studied FS in humans. FRAXA is an expansion of the trinucleotide CGG located in the gene FMR-1. In cattle, sites of chromosomal fragility were reported in BTAX, associated with different pathologies and fertility impairment. Chromosomal microdissection has became a valuable tool for isolating chromatine fragments. In this work, it was combined the chromosomal microdissection technique with DOP-PCR in order to carry out a molecular analysis of the fragile chromosomal region BTAXq31-34. In that region, polymorphic DNA-RAPD sequences (GC rich) are present and sequences of the gene FMR-1 are missing.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cattle; Fragile sites; DOP-PCR; Microdissection; X sexual chromosome. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352008000400023 |
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| Soares,R.L.; Dias Neto,N.B.; Guizelini,C.C.; Araújo,M.A.; Leal,C.R.B.; Möck,T.B.M.; Ramos,C.A.N.. |
| ABSTRACT Chromobacterium violaceum is a rare opportunistic pathogen that causes highly fatal infections in domestic animals and humans. This report describes a fatal case suggestive of septicemia in a four-day-old female calf with chromobacteriosis. The calf had suppurative omphalophlebitis, suppurative fibrinous polyarthritis, anterior uveitis with bilateral fibrin deposition, fibrinous peritonitis, lymph node abscess and multifocal lymphocytic and neutrophilic encephalitis with multifocal hemorrhages. C. violaceum was isolated from the spleen and peri-renal lymph node and its identity was confirmed by PCR and sequencing. The pathogen was sensitive to azithromycin, gentamicin, enrofloxacin, norfloxacin, marbofloxacin, ciprofloxacin, erythromycin,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: C. violaceum; Cattle; Brazil. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000601929 |
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| Registros recuperados: 389 | |
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