Efficacy of Live Attenuated Vaccine and Commercially Available Lectin Against Avian Pathogenic E. coli Infection in Broiler Chickens.

ABSTRACT: In this study, the protective efficacy of an E. coli live attenuated vaccine was compared to the preventive administration of lectin preparation before the challenge. Two hundred broiler chicks were divided into eight equal groups. The first group was used as a negative control group. Three groups were vaccinated at day 1 with the avian colibacillosis live vaccine of which one group served as a vaccinated nonchallenged group. Another two groups were treated with lectin product (0.5 mL/L drinking water) for three days before the challenge. The last two groups served as challenge control for either E. coli O78 or O125 strains. The challenge was conducted at three weeks of age with either homologous O78 or heterologous O125E. coli strains, using 0.5 mL/bird of each avian pathogenic E. coli (A

SUBMITTER: El-Mawgoud AIA 

PROVIDER: S-EPMC7355798 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature