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| Registros recuperados: 35 | |
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| Figueiredo,H.C.P.; Lage,A.P.; Pereira Júnior,F.N.; Leite,R.C.. |
| A bacterin from enterotoxigenic Escherichia coli (ETEC), containing fimbriae K99 and F41, was produced and its capacity to induce anti-K99 and anti-F41 antibodies in colostrum of vaccinated cows and in calf serum, and the persistence of these antibodies in neonates were determined. Three experiments were performed on two commercial farms. In all experiments animals were allotted randomly to the blocks, each block consisting of two pregnant females (a vaccinated one and a control one) and their respective calves. In experiment A (farm 1), comprised of 18 blocks, the animals received a vaccine dose 30 days before delivery. In experiment B (farm 1), consisted of 26 blocks, the animals received two vaccine doses (60 and 30 days before delivery). In experiment... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calf; Enterotoxigenic Escherichia coli; Vaccine; Diarrhea; K99; F41. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352004000400001 |
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| Ávila,L.G.; Silva,D.G.; Sato,R.A.; Fagliari,J.J.. |
| The clinical conditions of healthy calves infected with 10(9) CFU of Salmonella Typhimurium were evaluated and the viability of the experimental model in disease induction was verified. Twelve male Holstein calves, 10 to 15-days old, were examined. They were allocated into two groups, control and experimentally infected. Animals were submitted to clinical examination after inoculation and at every 24 hours, during six days after infection. Samples of rectal swabs were collected for Salmonella Typhimurium isolation. Results showed that all animals had different degrees of diarrhea, with mucus and bleeding, 24 to 72 hours after experimental infection with Salmonella Typhimurium, accompanied by fever, but no signs of sepsis. The isolation of Salmonella... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calf; Salmonellosis; Diarrhea. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352011000600043 |
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| Mendes,L.C.N.; Camacho,A.A.; Alves,A.L.G.; Borges,A.S.; Souza,R.C.A.; Ferreira,W.L.. |
| This paper presents electrocardiographic values in 25 Holstein calves using the standard bipolar limbs leads (I, II and III), augmented unipolar limb leads (avL, avR and avF) and a bipolar chest lead (V10). Two groups with different ages were compared (newborn - 18 to 72 hours and calves - 27 to 33 days old). It was concluded that no differences between age groups in P, Q, R, S and T waves, in the PR, QRS, QT and ST intervals and in axis orientation were observed. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calf; Newborn; Eletrocardiography; ECG. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352001000600002 |
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| Piccione,G.; Casella,S.; Pennisi,P.; Giannetto,C.; Costa,A.; Caola,G.. |
| Rectal temperature, heart and respiratory rates, and the course of some blood parameters were monitored in calves during perinatal and neonatal periods. The study was carried out on eight Limousine calves. From all subjects, rectal temperature, heart rate, and respiratory rate were measured. Blood samples were taken at the same hour (9am) from the external jugular vein, and then centrifuged and stored until analyses. By means of an UV spectrophotometer, the following blood parameters were assessed for each subject: total protein, total cholesterol, triglycerides, glucose, non-esterified fatty acids (NEFA), urea, creatinine, cholinesterase, lactate dehydrogenase (LDH), hydroxybutirate, glutamate pyruvate transaminases (GPT), glutamate oxalacetate... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calf; Neonatal period; Perinatal period; Blood parameters; Physiological parameters. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352010000100001 |
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| Castro,M.B.; Szabó,M.P.J.; Ferreira,W.L.; Pereira,A.A.. |
| Descreve-se um caso de displasia renal em um bezerro Limousin, macho, de quatro meses. O animal apresentava perda de peso, baixa taxa de crescimento, anorexia, apatia, diarréia escura fétida e uremia, sem melhora apesar de tratamento. O bezerro foi sacrificado para interromper o sofrimento adicional e submetido à necropsia. Ao exame foi observado que os rins estavam pequenos, firmes, pálidos e com superfície rugosa. A cápsula estava aderida à uma superfície subcapsular irregular. O córtex tinha aparência difusamente pálida e fibrosa e apresentava múltiplos focos brancos de fibrose. A junção córtico-medular estava indistinta. O exame histologico dos rins revelou múltiplos glomérulos imaturos com núcleo periférico, capilares inaparentes e padrão arbóreo. O... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calf; Limousin; Renal dysplasia; Histopathological. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352007000200037 |
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| Fagliari,J.J.; Passipieri,M.; Okuda,H.T.; Silva,S.L.; Silva,P.C.. |
| One hundred 6- to 12-month-old Nelore calves were allotted into control group (G1; 50 healthy calves) and photosensitization group (G2; n= 50). Blood samples were collected 12 to 24 hours after the onset of dermatitis (M1), and 15 to 30 days after that (M2), at time of resolution of clinical signs. Serum protein electrophoresis was performed by means of sodium dodecyl sulphate-polyacrylamide gel electrophoresis. Eighteen serum proteins with molecular weights ranging from 16,000 to 189,000 daltons (Da) were identified in all calves. In M1 and M2 serum concentrations of proteins with molecular weights of 115,000Da (ceruloplasmin), 61,000Da (a1-antitrypsin), 45,000Da (haptoglobin), and 40,000Da (acid glycoprotein) were significantly increased in calves. In... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calf; Hepatogenous photosensitization; Acute phase protein. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352007000600001 |
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| Almeida,R.S.; Spilki,F.R.; Roehe,P.M.; Verinaud,L.M.C.; Arns,C.W.. |
| An immunoistochemical (IHC) test was developed to detect bovine respiratory syncytial virus (BRSV) in cell cultures and tissues of experimentally infected mice and calves, using a commercial monoclonal antibody (Mab) against human respiratory syncytial virus (HRSV), as a less expensive alternative, instead of producing specific monoclonal antibodies to BRSV. Clinical samples from calves suffering respiratory disease were also submitted to this test. IHC detected BRSV antigens in mouse tracheas (3, 5 and 7 days post-infection) and lungs (5 and 7 days post-infection), and in one of three lungs from experimentally infected calves. Lungs samples from two naturally infected calves were tested and resulted positive for BRSV by the IHC test. These results suggest... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bovine respiratory syncytial virus; Immunohistochemistry; Calf; Mice; Experimental infection; Monoclonal antibody. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352006000600001 |
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| Rigobelo,E.C.; Gamez,H.J.; Marin,J.M.; Macedo,C.; Ambrosin,J.A.; Ávila,F.A.. |
| One hundred seventy-three Escherichia coli strains isolated from calves from northwestern São Paulo State, having diarrhea were examined for the production of thermolabile (LT) and thermostable (ST) enterotoxins and for the presence of virulence factors associated with bovine colibacillosis. Eighty-five (49.1%) of the E.coli strains produced toxins; 53 isolates were detected as producing STa toxin, and 9 also produced LT toxin. By PCR, 23 isolates were shown to harbor only the LT-II gene. Nine (5.2%) isolates harbored Shiga toxin genes: four carried the stx2 gene, four the stx1 gene and one carried both. Three of the isolates showing stx1 also carried the eae gene. Among the E. coli isolates examined for susceptibility to 10 antimicrobial agents,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calf; Diarrhea; Escherichia coli; Virulence factor; Antimicrobial agent. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352006000300003 |
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| Fagliari,J.J.; Weiss,D.J.; McClenanhan,D.; Evanson,O.A.. |
| Ten healthy 2 to 4-week-old Holstein calves were randomly allotted into control and infected groups. Control calves (n=5) were inoculated intrabronchially with 5ml of Dulbecco's phosphate-buffered saline solution (DPBSS). Infected calves (n=5) were inoculated intrabronchially with 5x10(9) log-phase Mannheimia haemolytica organisms suspended in 5ml of DPBSS. Blood samples were obtained 15 minutes before and one, two, four and six hours after inoculation. Serum protein concentrations were determined by means of sodium dodecyl sulphate-polyacrylamide gel electrophoresis. Serum concentrations of proteins with molecular weights of 125,000 D (ceruloplasmin), 60,000 D (a 1-antitrypsin), 45,000 D (haptoglobin), and 40,000 D (acid glycoprotein) were significantly... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calf; Pneumonia; Mannheimia (Pasteurella) haemolytica; Serum protein. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352003000400001 |
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| Picco,E.J.; Diaz David,D.C.; Encinas,T.; Rubio,M.R.; Boggio,J.C.. |
| The pharmacokinetic profile of sodium meclofenamate, a non-steroidal antiinflammatory drug, was determined in six pre-ruminant calves after intravenous and intramuscular administration at a dose of 2.2mg/kg of body weight. Meclofenamate concentrations were measured using a high performance liquid chromatography assay. The pharmacokinetics of sodium meclofenamate after intravenous and intramuscular administration to calves were characterised by a rapid distribution phase (t½alpha ), 15.45± 4.85min and 23.14± 7.24min for the intravenous and intramuscular administration, respectively, followed by a longer elimination phase (t½beta ) after intramuscular treatment (17.55± 6.52h.). The apparent volume of distribution (Vd) of the drug after intravenous... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calf; Sodium meclofenamate; Pharmacokinetic; Pre-ruminant. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352004000600001 |
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| Miranda,Karina Leite; Lage,Andrey Pereira. |
| The antimicrobial susceptibility of 25 Campylobacter sp strains isolated from calves with and without diarrhea - 7 C. coli, 16 C. fetus and 2 C. jejuni was studied by the disk diffusion method. Eleven antimicrobial agents were tested amikacin, ampicillin, kanamycin, chloramphenicol, erythromycin, gentamicin, neomycin, nitrofurantoin, penicillin G, tetracycline and sulfamethoxazole-trimethoprim. All Campylobacter sp strains were susceptible to amikacin, ampicillin, chloramphenicol, erythromycin, gentamicin, neomycin and nitrofurantoin. Three strains were moderately susceptible to kanamycin (2 C. coli and 1 C. fetus). All the strains were resistant to penicillin G. Two C. fetus strains were moderately susceptible to sulfamethoxazole-trimethoprim and 1 C.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Campylobacter sp; Calf; Diarrhea; Antimicrobial agents; Susceptibility. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000200032 |
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| Oliveira,Diego Medeiros de; Medeiros,João Marcos Araújo; Araújo,Ana Lucélia de; Pimentel,Luciano da Anunciação; Pierezan,Felipe; Miranda Neto,Eldinê Gomes; Dantas,Antônio Flávio Medeiros; Riet-Correa,Franklin. |
| Pulmonary choristoma is a rare malformation reported in different animal species defined as a mass of normal histological pulmonary tissue in an abnormal location. A case of pulmonary choristoma and meningocele is reported in a calf that presented a fluctuating subcutaneous fluid containing mass, measuring 15 x 15 x 20cm in the skull frontal region. The skin covering the sac was surgically removed. Macroscopically, subcutaneous nodules up to 2cm in diameter with irregular whitish areas mixed with red areas were observed. In the histological examination, pulmonary lobules tissue composed by alveoli, bronchi, bronchioles and cartilage were observed. Dilated blood vessels and hemorrhages were present between the lobules. In this case the pulmonary choristoma... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calf; Pulmonary choristoma; Meningocele. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782009000900045 |
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| Ribeiro Filho,José Dantas; Dantas,Waleska de Melo Ferreira; Lima,Antônio de Pádua; Viana,Rinaldo Batista; Silva,Micheline Ozana da; Ermita,Pedro Ancelmo Nunes; Silva,Gláucia Matos Marques da; Ribeiro,Bruna Maria; Costa,Caio Monteiro; Monteiro,Lorena Chaves. |
| ABSTRACT: This study compared the effects of enteral electrolyte solutions with different osmolarities in Holstein cattle. Eighteen newborn calves were evenly divided into three groups and administered the following treatments: hypotonic electrolyte solution (ESHYPO) containing 4g NaCl, 0.5g KCl, 1g sodium acetate, and 7.5g dextrose diluted in 1,000mL water; isotonic electrolyte solution (ESISO) containing 5g NaCl, 1g KCl, 2g sodium acetate, and 10g dextrose diluted in 1,000mL water; and hypertonic electrolyte solution (ESHYPER) containing 6g NaCl, 1g KCl, 3g sodium acetate, and 15g dextrose diluted in 1,000mL water. Solutions were administered at a rate of 15mL kg-1hr-1 for 12 hours in a continuous flow. All three solutions increased the concentration of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fluid therapy; Calf; Hypotonic solution; Nasogastric tube.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500605 |
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| Registros recuperados: 35 | |
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