Reference | 7RG33S2E (25)

The study took place between October and December 2019. Ten broiler farms contracted by the same company, located in the same geographical region in the Republic of Ireland and served by the same hatchery participated in the study. The study batch on each farm consisted of one production round whereby five farms operated the conventional hatching system (CH farms) and five farms operated the on-farm hatching system (OH farms).

Before chicks or eggs arrived at the farm (D0) environmental samples were taken from the rearing house to study baseline AMR in the E. coli isolates. On each farm, fve individual samples from the foor, wall, vent, feeders, and drinkers were collected using sponge swabs

AST Method: Agar Dilution

Reference explicitly reports AST breakpoints: None

Reference reports using a MIC table: None