“…This finding confirms the assumption that birds with no treatment prior to S. Gallinarum infection are susceptible to higher concentrations of the pathogen in their organism. They are subject to higher morbidity, lower zootechnical performance, and greater environmental excretion of the pathogen, leading to the perpetuation of the disease in the flock ( Milbradt et al, 2017 ; Gut et al, 2018 ).…”