Effect of Litter Treatment on <i>Campylobacter jejuni</i> in Broilers and on Cecal Microbiota
Thépault, Amandine | Roulleau, Xavier | Loiseau, Pauline | Cauquil, Laurent | Poezevara, Typhaine | Hyronimus, Bertrand | Quesne, Ségolène | Souchaud, Florent | Keita, Alassane | Chemaly, Marianne | Guyard-Nicodème, Muriel
Since 2018, when a process hygiene criterion for <i>Campylobacter</i> in broilers at the slaughterhouse was implemented across Europe, efforts to reduce <i>Campylobacter</i> at farm level have increased. Despite numerous studies aiming to reduce <i>Campylobacter</i> colonization in broilers, no efficient control strategy has been identified so far. The present work assessed first the efficacy of a commercial litter treatment to reduce <i>Campylobacter</i> colonization in broilers during two in-vivo trials and second, its impact on cecal microbiota. The treatment does not affect broiler growth and no effect on <i>Campylobacter</i> counts was observed during the in-vivo trials. Nevertheless, cecal microbiota were affected by the treatment. Alpha and beta diversity were significantly different for the control and litter-treated groups on day 35. In addition, several taxa were identified as significantly associated with the different experimental groups. Further work is needed to find a suitable control measure combining different strategies in order to reduce <i>Campylobacter</i>.
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