Navegando por Assunto "Neospora caninum"

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Acesso aberto (Open Access)
Anticorpos IgG anti-Neospora caninum e Toxoplasma gondii em búfalas (Bubalus bubalis) criadas no estado do Pará
(2010-05) SILVA, Sandro Patroca da; MOTA, Rinaldo Aparecido; CAVALCANTI, Erika Fernanda Torres Samico; SOUZA NETO, Orestes Luis de; ALBUQUERQUE, Pedro Paulo Feitosa de; DIAS, Hilma Lúcia Tavares; FARIA, Eduardo Bento de
To investigate the occurrence of antibodies IgG anti-Neospora caninum and Toxoplasma gondii, blood samples were collected from 374 adult female water buffaloes originated from 14 production units located in 13 counties of the state of Pará. The sera were subjected to indirect fluorescent antibody (IFA), using titers of 200 and 64 as IFA cut off points for N. caninum and T. gondii, respectively. Hundred and fifty three (40.9%) buffaloes were sero-positive for N. caninum, with 100% of the properties being sources of infection. Four buffaloes (1.1%) in four farms were seropositive for T. gondii, and one buffalo cow (0.27%) was seropositive for the two parasites. The presence of antibodies indicates that these protozoan parasites are circulating among buffaloes from the properties studied, representing a source of infection to other animals, as well as a possible cause of reproductive disorders in this species.
Acesso aberto (Open Access)
"Inquerito sorológico de Neospora caninum em rebanhos bovinos leiteiros no município de Parauapebas, mesorregião sudeste do estado do Pará"
(Universidade Federal do Pará, 2009-06-29) SILVA, Clóvis Laurindo da; FREITAS, José de Arimatéa; http://lattes.cnpq.br/2382745365421156
Neospora caninum is a world-wide coccidian protozoa which causes considerable damages at animals breeding. To survey the frequence of anti-N. caninum antibodies in bovine milkmen in Parauapebas county, Southeast Mesoregion of Pará State, Northern Brazil, 465 serum samples coming from 45 farmers were submitted to indirect immunofluorescence reaction (cutting point 1:100); 62 (13,33%) samples have demonstrated the presence of anti-N. caninum antibodies, with the following distribution: 27 (43,55%) in 1:100 dilution; 14 (22,58%) in 1:200 dilution; 16 (25,80%) in 1:400; and 5 (8,07%) in 1:800 dilution. None serum had tittle in over 1:800 dilution. In a high percentage there was only an animal with anti-N. caninum antibodies; the major frequence was observed between females, but was’nt observed significative difference between animal sexes; animals with equal or over five years old presented major percentage of positive serum proporcionaly to number of positives serum of younger animals. The results have demonstrated that bovine milkmen of Parauapebas county had a considerable frequence of anti-N. caninum antibodies. Sanitary surveillance measures are necessary to prevent the entrance of N. caninum and to control the difusion of this protozoa at the regional bovine milkmen.