David Harrington

I. INTRODUCTION The use of feed additives such as those based on essential oils or organic acids is increasing in poultry production as a result of a number of factors including legislation on restricting antibiotic use and consumer preferences for more natural, welfare friendly poultry production. Formic and propionic acid products have a strong antimicrobial activity and have been shown to impro ...

I. INTRODUCTIONManagement of coccidiosis has traditionally been via medication or vaccination. Anticoccidial programmes typically comprise a chemical and an ionophore component. Ionophores are under increasing regulatory and consumer scrutiny for their antimicrobial activity. Coccidial vaccines comprise Eimeria strains that are either attenuated (typically via repeated passage) or nonpathogenic or ...

Background and objectivesThe recent EU ban on therapeutic levels of zinc in animal diets has led to concern regarding potential performance losses and animal welfare. Potential alternatives such as organic acids have been shown to be beneficial in reducing gram negative bacterial and promote digestibility (Canibe et al., 2001; Mroz, 2005). These properties may also help in the replacement of zinc ...