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The effect of vaccination with a Salmonella enteritidis aroA mutant on early cellular responses in caecal lamina propria of newly-hatched chickens.
challenge strain. Bacteriological data showed that vaccinated animals had a much lower number of challenge bacteria in their organs and caecal contents the first days post-challenge, relative to unvaccinated ...
Dynamics of immune cell infiltration in the caecal lamina propria of chickens after neonatal infection with a Salmonella enteritidis strain.
Enteritidis. Bacteria invaded the lamina propria of the caecal wall from 12h post-challenge onwards. Bacteriological examination of internal organs (liver, spleen) showed a peak in Salmonella bacteria at 3days ...
Classical swine fever (CSF) marker vaccine. Trial II. Challenge study in pregnant sows.
prevent transplacental transmission of CSF virus. In Belgium and The Netherlands pregnant sows were vaccinated once and challenged with virulent CSF virus 14 days later, which was around day 60 of ...
Necrotoxigenic Escherichia coli type-2 invade and cause diarrhoea during experimental infection in colostrum-restricted newborn calves.
been developed with NTEC strains producing the cytotoxic necrotising factor 2. In all, 14 colostrum-restricted calves were orally challenged with two strains isolated from the faeces of a diarrheic calf ...
Enhanced specific antibody response to bovine serum albumin in pigeons due to L-carnitine supplementation.
challenge is discussed. Health Topics: Animal health Category: A1 FOS Classification: 4.03 Veterinary science ...
Long-term protection against bovine leukaemia virus replication in cattle and sheep.
challenge. Four months after challenge, the protection of the vaccinated animals was effective in contrast to unvaccinated controls. However, long-term protection (18 months after challenge) was observed only ...
Clinical signs, reproduction of attaching/effacing lesions, and enterocyte invasion after oral inoculation of an O118 enterohaemorrhagic Escherichia coli in neonatal calves.
which is also common to both cattle and humans. The bovine O118: H16 EHEC strain was able to colonize the gut of three newborn calves, and to induce diarrhoea twenty-four hours after challenge and to ...
Specific serum and local antibody responses against Cryptosporidium parvum during medication of calves with halofuginone lactate.
were observed. Both medicated and unmedicated calves were equally protected from a challenge with 10(7) oocysts 16 weeks after the first contact with the parasite. Health Topics: Animal health ...
Susceptibility of hares and rabbits to a Belgian isolate of European brown hare syndrome virus.
after the inoculation of EBHS virus, the rabbits were not protected when challenged with viral hemorrhagic disease (VHD) virus. The different pathogenicity of the Belgian EBHS and VHD virus isolates in ...
Cryptosporidium parvum in calves: kinetics and immunoblot analysis of specific serum and local antibody responses (immunoglobulin A [IgA], IgG, and IgM) after natural and experimental infections.
whereas serum anti-C. parvum IgA levels peaked later than did local IgA levels. Challenge reinfection of naturally infected calves at day 112 was not followed by clinical signs or oocyst output or by ...