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The Effects of Barn Sanitation on Gut Microbiota of Broiler Chickens

2021 CPRF
In broiler production, to maintain food safety and flock health, biosecurity approaches to keep chicken barns clean are important. According to the current on-farm-food safety assurance program (OFFSAP), broiler chicken producers are required to clean the barns with disinfectants annually. In practice, these barn cleaning approaches, namely full sanitation using chemical disinfectants (FS) and water-wash (WW), are widely adopted by the chicken producers. Yet, little information is known regarding how these cleaning measures affect chicken gut microbiology and nutrient utilization. In the current study, a cross-over experiment was designed in a series of commercial chicken barns to compare WW and FS on the production level in 4 production cycles. We evaluated the effects of barn disinfection on the commercial broiler intestinal microbiota composition and pathogen occurrence and abundance in the month-old broiler gut. As a result, we report that the increased level of barn disinfection had a subtle but significant effect on the 30-day broiler cecal microbiota by altering the relative abundance of some important microbe, for example C. jejuni. In addition, the FS group showed decreased total short chain fatty acids, acetate and butyrate concentrations in the gut. Furthermore, increased pro-inflammatory cytokine IL-1b and decreased monocarboxylate transporter gene SMCT were shown by the FS group indicating that increased broiler house sanitation may lead to more inflamed chicken ceca with decreased nutrient utilization.
Tags :
barn cleaning,gut microbiota,sanitation
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PhD Student

University of Alberta

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