Maintenance: On Thursday, June 28 2018, 18:00-18:15, maintenance work on the ZORA servers is scheduled. ZORA will not be available during this period. Thank you for your patience.
Van Hoorebeke, S; Van Immerseel, F; Schulz, J; Hartung, J; Harisberger, M; Barco, L; Ricci, A; Theodoropoulos, G; Xylouri, E; De Vylder, J; Ducatelle, R; Haesebrouck, F; Pasmans, F; de Kruif, A; Dewulf, J (2010). Determination of the within and between flock prevalence and identification of risk factors for Salmonella infections in laying hen flocks housed in conventional and alternative systems. Preventive Veterinary Medicine, 94(1-2):94-100.