Assuntos
Doenças das Aves/diagnóstico , Chlamydophila psittaci/isolamento & purificação , Papagaios , Psitacose/veterinária , Animais , Doenças das Aves/tratamento farmacológico , Doenças das Aves/microbiologia , Chlamydophila psittaci/classificação , Masculino , Psitacose/diagnóstico , Psitacose/tratamento farmacológico , Sorotipagem/veterináriaRESUMO
This short review highlights the characteristics of infectious laryngotracheitis, the diagnostic methods and the actual disease situation in Switzerland and other European countries. Recommendations for a future control policy are outlined.
Assuntos
Galinhas , Infecções por Herpesviridae/veterinária , Herpesvirus Galináceo 1 , Doenças das Aves Domésticas/epidemiologia , Animais , Europa (Continente)/epidemiologia , Infecções por Herpesviridae/epidemiologia , Infecções por Herpesviridae/prevenção & controle , Herpesvirus Galináceo 1/isolamento & purificação , Laringite/epidemiologia , Laringite/prevenção & controle , Laringite/veterinária , Doenças das Aves Domésticas/diagnóstico , Doenças das Aves Domésticas/prevenção & controle , Suíça/epidemiologia , Traqueíte/epidemiologia , Traqueíte/prevenção & controle , Traqueíte/veterináriaRESUMO
Newly weaned pigs were fed a basal diet containing either egg antibody against fimbriae F18 at a high or low level, control egg powder or no egg, and challenged with enterotoxigenic Escherichia coli with fimbriae F18. The challenge was repeated after termination of the antibody treatment. Antibody-containing egg powder was produced by vaccination of hens with semi-purified fimbriae of the two variants F18ab and F18ac. Pigs eating egg powder with antibody against the same fimbrial variant were fully protected, even if the vaccine for the hens was produced with a different serotype devoid of enterotoxins. The effect was dose-dependent. The high dose of antibody against the heterologous variant of fimbriae F18 reduced colonisation at a level which was not significant. Ingestion of egg antibody partially suppressed the build-up of anti-colonisation immunity. Oral application of egg antibodies offers a promising approach for the prevention of infectious diseases of the digestive tract.
Assuntos
Ração Animal , Anticorpos Antibacterianos/administração & dosagem , Infecções por Escherichia coli/veterinária , Fímbrias Bacterianas/imunologia , Intestinos/microbiologia , Doenças dos Suínos/prevenção & controle , Animais , Galinhas , Contagem de Colônia Microbiana , Ovos , Infecções por Escherichia coli/prevenção & controle , Fezes/microbiologia , Suínos , Doenças dos Suínos/microbiologiaRESUMO
37 Salmonella gallinarum-pullorum-strains were isolated from dead poultry between 1986 and 1996. All strains except one belonged to the biovar pullorum. 33 isolates were from fancy poultry flocks, four from backyard flocks. 10 of 12 chicks and 10 of 25 adult birds showed clinical signs of disease. The growing significance of fancy and backyard flocks as a reservoir for S. gallinarum-pullorum is emphasized in view of the increase in free range management of commercial layer and broiler flocks.