Interference between Escherichia coli genotypes from the E. coli peritonitis syndrome given simultaneously to productive SPF White Leghorn hens by intratracheal inoculation.
W J M LandmanJ H H van EckAnnet HeuvelinkPublished in: Avian pathology : journal of the W.V.P.A (2024)
genotypes interfere with each other in hens after given as a mix.Interference is likely based on a random process.Broad protection can best be assessed by challenging with single genotypes.