Large-Scale Field Trials of an Eimeria Vaccine Induce Positive Effects on the Production Index of Broilers.

ABSTRACT: Live coccidiosis vaccines have mainly been used to reduce Eimeria species infection, which is considered the most economically important disease in the poultry industry. Evaluation data on vaccine effectiveness through large-scale field experiments are lacking, especially in broilers. Thus, the effectiveness of a commercial coccidiosis vaccine was evaluated in approximately 900,000 chicks reared on three open-broiler farms where coccidiosis is prevalent. The vaccine's effectiveness after vaccination of 1-day-old chicks was monitored using three parameters (lesion score, fecal oocyst shedding, and production index, PI) in nine trials performed three times on each farm. Lesion scores were confirmed in three different areas of the intestine because the vaccine contained four Eimeria

SUBMITTER: Nguyen BT 

PROVIDER: S-EPMC11281675 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature