Résultats de la recherche - 51 results
Effect of a DIVA vaccine with and without in-feed use of coated calcium-butyrate on transmission of Salmonella Typhimurium in pigs.
experiment with 56 piglets (3-15 weeks of age): two groups were orally vaccinated with 107 — 108 Colony Forming Units (CFU)/2 mL of a new attenuated Salmonella Typhimurium vaccine ‘Salmoporc-∆rfaJ’ with DIVA ...
Setting up a SPF chicken model for the pathotyping of West Nile virus (WNV) strains.
that WNV strain virulence can be discriminated in a one-day-old SPF chicken model on the basis of mortality rates, while viremia and viral load in feathers appear to be age dependent rather than ...
Seroprevalence and potential risk factors for Brucella spp. infection in traditional cattle, sheep and goats reared in urban, periurban and rural areas of Niger.
0.9-1.8%) based on indirect ELISA test for Brucella antibodies. Animals aged of 1-4 years were found to be more susceptible than animals less than 1 year old (Odds ratio [OR] of 2.7; 95% CI: 1.43-5.28). For ...
Large-scale cross-sectional serological survey of Schmallenberg virus in Belgian cattle at the end of the first vector season.
conclusion that the Schmallenberg virus was widespread in Belgium during winter 2011. Seroprevalence was shown to be statistically associated to the animal’s age (P < 0.0001): with 64.9% (95% CI: ...
Serological and virological BVDV prevalence and risk factor analysis for herds to be BVDV seropositive in Belgian cattle herds.
Belgium, a cross-sectional study was performed between November 2009 and March 2010. Young stock aged between 6 and 12 months from 773 randomly selected Belgian cattle herds were tested for BVDV-specific ...
Efficacy of rHVT-AI vector vaccine in broilers with passive immunity against challenge with two antigenically divergent Egyptian clade 2.2.1 HPAI H5N1 strains.
combination. Therefore, broilers carrying MDA s against both HVT and Asian H5N1 HPAIV were vaccinated on the first day of age with rHVT- H5, with or without boosting vaccination by an inactivated vaccine after ...
Potency of a recombinant NDV-H5 vaccine against various HPAI H5N1 virus challenges in SPF chickens.
viruses. Obtained protections were dependent on the age of the chickens, on the constructs and, in particular, on the homology between the HA that was inserted and the challenge strains. The objective of ...
Spatiotemporal dynamics of Puumala hantavirus in suburban reservoir rodent populations.
vole density, vole weight (a proxy for age), and capture site but not by year or sex. Moreover, voles with large maximal distance between two captures had a high probability for Puumala seropositivity. ...
Risk factors associated with brucellosis seropositivity among cattle in the central savannah-forest area of Ivory Coast.
Abstract: Serological results obtained from 907 serum samples collected from unvaccinated cattle of at least 6 months of age in the savannah-forest region of Ivory Coast were used to investigate risk factors ...
Impact of a novel inactivated PRRS virus vaccine on virus replication and virus-induced pathology in fetal implantation sites and fetuses upon challenge.
Volume 78, Issue 7, p.1527-37 (2012) Keywords: Animals Antibodies, Viral Female Fetal Diseases Fetus Gestational Age Placenta Porcine Reproductive and Respiratory Syndrome Porcine respiratory and ...