Lameness in broiler chickens is a major animal welfare concern and causes significant economic losses. One important underlying cause is bacterial chondronecrosis with osteomyelitis (BCO), a condition in which bacteria such as Enterococcus cecorum infect bone tissue. The exact pathogenesis remains unclear, but factors such as rapid growth, skeletal immaturity, and intestinal leakage are believed to play a role.
Currently, antibiotics are the only available treatment, but their use is under pressure due to increasing antimicrobial resistance and the need for responsible antibiotic stewardship. This PhD study investigates the prevalence and risk factors of BCO on Flemish broiler farms through extensive field studies. In addition, we aim to develop sustainable preventive strategies to improve animal welfare, reduce antibiotic use, and limit economic losses for poultry producers.