Rare detection of Neospora caninum in placentas from seropositive dams giving birth to full-term calves.
J Vet Diagn Invest
; 13(2): 173-5, 2001 Mar.
Article
em En
| MEDLINE
| ID: mdl-11289218
ABSTRACT
Neospora caninum is thought to be transmitted to cattle by dogs, the only known definitive host. Although aborted fetuses seem the most likely source of infective material for dogs, placentas from seropositive dams appear also as a potential source of infective material. The objective of the study was to evaluate the presence of N. caninum organisms in placentas of full-term calves born to seropositive cows. Sixteen placentas, 11 from Neospora-seropositive cows, were examined histologically and by immunohistochemistry and polymerase chain reaction (PCR) assay for the presence of N. caninum. Mild placentitis was observed in all placentas. Neospora caninum was not identified by immunohistochemistry, but placentas from 2 seropositive dams were positive for N. caninum by PCR. These results suggest that placentas of full-term calves from seropositive cows may be a potential source of N. caninum for dogs, but the incidence of this mode of transmission is likely to be low.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Placenta
/
Anticorpos Antiprotozoários
/
Doenças dos Bovinos
/
Coccidiose
/
Neospora
Tipo de estudo:
Diagnostic_studies
Limite:
Animals
/
Pregnancy
País/Região como assunto:
America do norte
Idioma:
En
Revista:
J Vet Diagn Invest
Assunto da revista:
MEDICINA VETERINARIA
Ano de publicação:
2001
Tipo de documento:
Article
País de afiliação:
Canadá