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Abstract: Withdrawal of Antibiotic Growth Promoters in China and its Impact on the Foodborne Pathogen Campylobacter Coli of Swine Origin

Abstract: Withdrawal of antibiotic growth promoters in China and its impact on the foodborne pathogen Campylobacter coli of swine origin

Antibiotic growth promoters (AGPs) have been used as feed additives to improve feed efficiency in food animals for more than six decades. However, the wide use of AGPs has led to the emergence of antibiotic-resistant pathogens of animal origin, posing a significant threat to food safety and public health. China prohibited the addition of AGPs to animal feed from July 2020. The impacts caused by the withdrawal of AGPs on the prevalence and antibiotic resistance of foodborne pathogens have not been illustrated. Here, a total of 471 strains of Campylobacter were isolated from pigs from three pig farms and two slaughterhouses in Sichuan Province for 4 consecutive years (2018-2021), including 2 years before and 2 years after the ban on AGPs in China. The isolation rate of Campylobacter had a slight increase after prohibiting the addition of AGPs to the feed. Contrary to what we expected, the antibiotic susceptibility test and WGS data showed that the antibiotic resistance to gentamicin and florfenicol and the abundance of virulence genes increased significantly after the ban of AGPs.

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A Day On the Farm Preparing For Winter!

Video: A Day On the Farm Preparing For Winter!

Winter is coming! We work on getting the cattle barns ready for the winter! There is plenty to do on the dairy farm this time of year! First we feed all of the dry cows and heifers Silage! Then we put a cow strap on a very pregnant heifer, in order to make sure she is ready for the dairy barn after giving birth! Now on to winterizing the barns! First we move some gates and screw on a couple pieces of temporary tin siding! To finish up in the barns we work on the drinking cups! Lastly I feed some dry hay to a group of heifers still in the pasture!