Lethality in 1-day-old chicks for intratracheal inoculation with APEC isolates.

a<p>Negative control for chick colisepticemia model.</p>b<p>Positive control for chick colisepticemia model.</p>c<p>Data mean the number of dead chicks/total number of chicks tested.</p>d<p>Data mean the number of chicks from which the APEC strain was reisolated/total number of chicks tested.</p>e<p>Mean of lesion scores (ranked from 0 to 3 due to occurrence of airsacculitis, pericarditis, and perihepatitis) for 10 chicks tested.</p>f<p>Values are not significantly different (<i>P</i>≥0.05 by Fisher's exact test) with the negative control.</p><p>Lethality in 1-day-old chicks for intratracheal inoculation with APEC isolates.