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Rio de Janeiro, Brazil

Laposy C.B.,University of West Paulista | Silva D.K.M.,Mestrado Ciencia Animal | Pessoto J.N.,Medicina Veterinaria
Semina:Ciencias Agrarias | Year: 2014

Cefovecin is the third generation semi synthetic cephalosporin. The drug is indicated for treatment of skin and urinary infections. The main difference between cefovecin and the others cephalosporins is the highest plasma protein binding, providing an extend action. Due to lack of laboratory studies demonstrating changes caused by the use of cefovecin, the aim of this study was to evaluate the influence of cefovecin therapy on the serum proteins, hemogram, urea and creatinine activities, blood gas, platelet distribution width (PDW) and platelet count. Ten healthy dogs (males n=4; females n=6), average weight of 10.03±3.54 kg were used. The animals were kept in individual cages all over the experiment. The animals were submitted to the clinical and laboratory examinations as an inclusion criterion for the experiment. Sodium cefovecin (Convenia®) was subcutaneously administered (8mg/ kg) to the dogs. Clinical evaluation and laboratorial analysis was performed prior and at 1, 2, 3, 7, 14 and 21 days post treatment (dpt). Despite to be in accordance with the reference values, it was observed a statistically significant (p<0.05) decrease in total serum protein, globulin, hemoglobin and packed cell volume at 21 dpt. The platelet distribution width (PDW) and platelet count were increased at seven and 21 days (p>0.05), respectively. No changes in urea and creatinine activities, blood gas and leukocyte values were observed in the dogs after the administration of cefovecin. In conclusion, cefovecin can be administered in healthy dogs without causing significant laboratory abnormalities. Source

Macedo E.O.,Federal University of Piaui | De Oliveira M.E.,UFPI | Da Silva P.C.,Medicina Veterinaria | Ribeiro A.M.,State University of Maringa | And 3 more authors.
Semina:Ciencias Agrarias | Year: 2015

The experiment was conducted to evaluate the influence of Marandu-grass (Brachiaria brizantha) pasture height (30, 40, 50 and 60 cm) on the canopy structural traits and grazing behavior and forageingestion process by goats. Six goats were used to evaluate behavior during grazing, and four were used to evaluate the ingestion process - all goats were Anglo-Nubian. The adopted experimental design was completely randomized, with two replicates in space and two replicates in time. Increase in the canopy height resulted in an increase in the masses of forage, leaves, stem, and dead material and tiller density, and reduction in leaf/stem ratio. Grazing time increased and idle time reduced as the canopy height was elevated. The correlation between canopy height and bite depth was positive and linear (r = 0.99). The mass of consumed forage, the intake rate, and the bite mass were higher at 60 cm. The correlation between pasture height and bite rate was negative, whereas the correlation between pasture height and the time per bite was positive. On Marandu-grass pastures, the greatest efficiency in forage harvesting by goats occurs at a canopy height of 60 cm. Source

Hoffmann A.R.,State University Londrina | Navarro I.T.,UEL DMVP | Camargo Jr. V.E.,Medicina Veterinaria | Caldart E.T.,UEL DMVP | Pereira P.M.,UEL DCV
Semina:Ciencias Agrarias | Year: 2012

Leishmaniasis are antropozoonoses involving various species of Leishmania and hosts, with variable clinical presentations and considered of great importance to public health. This article describes a case of canine leishmaniasis caused by Leishmania amazonensis, from the town of Cambé, Paraná state, Brazil. This state is considered endemic for American cutaneous leishmaniasis (ACL) in humans, but this is the first report in a dog in the region, caused by L. amazonensis. The taxonomic characterization of Leishmania was performed by multilocus enzyme electrophoresis technique (MLEE). Clinical signs were similar to those observed in visceral leishmaniasis as polyarthritis and progressive weight loss. It is concluded that the related polyarthritis when related to leishmaniasis, cannot be considered a clinical sign associated only with L. chagasi in view of the L. amazonensis also has this as one of its presentations. The LTA becomes a differential diagnosis of polyarthritis in dogs. Source

De Moura A.B.,Santa Catarina State University | Matiello J.P.,Medicina Veterinaria | Da Silva M.O.,Ciencia Animal | De Souza A.P.,Santa Catarina State University | Sartor A.A.,Santa Catarina State University
Semina:Ciencias Agrarias | Year: 2016

Toxoplasmosis is a zoonotic disease caused by the protozoan Toxoplasma gondii. Among domestic species, the horse is one of those most resistant to T. gondii infection; however, upon acute infection, horses may present hyperirritability, poor motor coordination, ocular disorders, and abortion. Herein, we investigated the presence of antibodies against T. gondii, in order to identify possible risk factors for infection in horses and to establish the correlation of T. gondii infection with reproductive and/ or neurological disorders. We collected 615 blood samples from animals in the mountain mesoregion (n=311) and the coastal mesoregion (n=304) of Santa Catarina state. An epidemiological questionnaire was used to identify possible risk factors. Antibodies to T. gondii were detected by immuno-fluorescence assay (IFA.1:64) using RH strain tachyzoites of the protozoan as antigen. Correlation (P<0.05) between seropositivity and race, sex, age, diet, contact with other animals, reproductive and/or neurological disorders, and origin were assessed. The overall incidence of seropositivity was 10.4% (64/615), and in the mountain and coastal regions, 10.3% and 10.5%, respectively. The reciprocal of the titles observed was: 1:64 (36), 1:256 (26) and 1:1024 (two). There was no significant difference (P>0.05) between regions, and there was no correlation between seropositivity and the variables analyzed. Source

Souza E.O.,Mestrando em Ciencia Animal | Haese D.,Medicina Veterinaria | Kill J.L.,Medicina Veterinaria | Haddade I.R.,IFES CST | And 4 more authors.
Revista Brasileira de Zootecnia | Year: 2011

In order evaluate digestible lysine levels in diets supplemented with 20 ppm of ractopamine on the performance and carcass traits, 64 barrows with high genetic potential at finishing phase were allotted in a completely randomized block design with four digestible lysine levels (0.80, 0.90, 1.00, and 1.10%), eight replicates and two pigs per experimental unit. Initial body weight and pigs' kinship were used as criteria in the blocks formation. Diets were mainly composed of corn and soybean meal supplemented with minerals, vitamins and amino acids to meet pigs' nutritional requirements at the finishing phase, except for digestible lysine. No effect of digestible lysine levels was observed in animal performance. The digestible lysine intake increased linearly by increasing the levels of digestible lysine in the diets. Carcass traits were not influenced by the dietary levels of digestible lysine. The level of 0.80% of digestible lysine in diets supplemented with 20 ppm ractopamine meets the nutritional requirements of castrated male pigs during the finishing phase. © 2011 Sociedade Brasileira de Zootecnia. Source

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