Skip to main content

Table 3 Number of animals, parasitic (A. galli), bacterial (nalidixic-acid-resistant O78 E. coli) and pathological findings of third experiment with primary E. coli infection superimposed by secondary A. galli infection

From: Consequences of concurrent Ascaridia galli and Escherichia coliinfections in chickens

Group Type, route and dose of infection Group size No of dead animals during experiment Post-mortem findings at slaughter
     Pathological changes Worm burden (± S.D.) Re-isolation of E. coli
Ag Oral 500 A. galli eggs 20 0 20 neg. 0.8 ± 1.4 20 neg.
Ec8O+Ag Oral E. coli with 108 cfu + oral 500 A. galli eggs 21 0 21 neg. 0.3 ± 0.5 21 neg
Ec8T+Ag Tracheal E. coli with 108 cfu + oral 500 A. galli eggs 21 71,4 14 neg. 0.1 ± 0.3 14 neg.
Ec8O Oral E. coli with 108 cfu 21 0 21 neg. 0 21 neg.
Ec8T Tracheal E. coli with 108 cfu 21 62,4 15 neg. 0 15 neg.
Control Uninfected control 20 0 20 neg. 03 20 neg.
  1. 1 Seven animals died after the second infection with A. galli. All were positive for a nalidixic_acid_resistant O78 E. coli and had extensive pathological changes, all with airsacculitis and fibrinopurulent pericarditis.
  2. 2 Six animals died after the first infection with E. coli. All were positive for a nalidixic_acid_resistant O78 E. coli and five chickens had pathological with airsacculitis and fibrinopurulent pericarditis. One chicken had no pathological changes.
  3. 3 Few larvae were recovered in the uninfected groups.
  4. 4 Significantly more animals died compared to the remaining groups.