Quantitative Assessment of Fimbriae-Specific Serum and Egg Yolk Antibodies Induced in Chicken Layers by a Newly Developed Live Salmonella Enteritidis Vaccine and Relationship to Infection
Year: 2008
Type: article
Abstract: The increase in Salmonella Enteritidis (SE) human outbreaks, mostly incriminating the poultry as the source of the infection, has increased the search to control this pathogen in chickens. The purpose of this study was to quantify the SE fimbriae-specific serum and egg yolk antibodies following a controlled SE-challenge of laying hens previously immunized with a newly developed live SE vaccine versus a classical killed commercial vaccine. This work also aimed to determine the relationship between this quantitative assessment and the protection against SE invasiveness in the livers and spleens of the experimental hens. In the procedure, laying hens were divided into four different groups. Birds in group A were given orally a newly developed live SE vaccine at 222 days of age, while birds in group D were given subcutaneously a commercial killed SE vaccine in the neck at 40 and 130 days of age. Birds of groups B and C were deprived of vaccination (control groups). Hens in
Source: Scopus
Language: English
Subfield: Food Science
Domain: Life Sciences
Open Access status: diamond
OpenAlex ID: W2132460869