Fecal microbiome of periparturient dairy cattle and associations with the onset of Salmonella shedding

PloS One
Lohendy Muñoz-VargasGregory Habing

Abstract

Non-typhoidal Salmonella enterica is a zoonotic pathogen with critical importance in animal and public health. The persistence of Salmonella on farms affects animal productivity and health, and represents a risk for food safety. The intestinal microbiota plays a fundamental role in the colonization and invasion of this ubiquitous microorganism. To overcome the colonization resistance imparted by the gut microbiome, Salmonella uses invasion strategies and the host inflammatory response to survive, proliferate, and establish infections with diverse clinical manifestations. Cattle serve as reservoirs of Salmonella, and periparturient cows have high prevalence of Salmonella shedding; however, little is known about the association between the gut microbiome and the onset of Salmonella shedding during the periparturient period. Thus, the objective of this study was to assess the association between changes in bacterial communities and the onset of Salmonella shedding in cattle approaching parturition. In a prospective cohort study, fecal samples from 98 dairy cows originating from four different farms were collected at four time points relative to calving (-3 wks, -1 wk, +1 wk, +3 wks). All 392 samples were cultured for Salmonella. S...Continue Reading

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Sep 15, 2017·Foodborne Pathogens and Disease·Lohendy Muñoz-VargasGreg Habing

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Citations

Feb 28, 2020·Experimental and Therapeutic Medicine·Jinsong YangWenchang Zhang
May 23, 2019·FEMS Microbiology Ecology·Devin B Holman, Katherine E Gzyl

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Methods Mentioned

BETA
PCR

Software Mentioned

UCHIME
vegan
SAS
BaseSpace
R
mothur

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