One of the main issues in animal husbandry is efficient and sustainable production. Several factors such as raw material prices and increasing worldwide competition force farmers to optimize their production cycles. Moreover, farmers have to deal with animal welfare regulation, restriction of antibiotic usage and prevalence of infectious diseases.
When animals are subject to stress factors such as animal density, climate condition, type of housing or change of feed, they are highly susceptible to infectious diseases and (metabolic) disorders.
These diseases can be caused by gram-negative pathogenic bacteria like E.coli and Salmonella. Antibiotics and acidifier programs are commonly used, however, not all bacteria can be targeted due to economic and/or practical disadvantages.
Infection by E.coli and Salmonella may lead to decreased reproductive and growth performance, high mortality rates and lower profitability.