This is our Friday rubric: every week a new Science Page from the Bob Morrison’s Swine Health Monitoring Project. The previous editions of the science page are available on our website.
This week’s science page is a summary of a research project done by Angelina L. Bosman, Anne E. Deckert, Carolee A. Carson, Zvonimir Poljak, Richard J. Reid-Smith, and Scott A. McEwen at the University of Guelph and the Public Health Agency of Canada.
Dr. Noelle Noyes received the 2022 McKnight Land-Grant Professorship for her work on Microbes for Sustainable Intensification of Livestock Production. As the human population expands, so does its demand for protein. Livestock farmers must meet this demand, but their land and water are shrinking rapidly, meaning they must produce more with less. Dr. Noyes confronts this challenge through scientific discovery of the livestock microbiome.
Despite a recognized need for more longitudinal studies to assess the effects of antimicrobial use on resistance in food animals, they remain sparse in the literature, and most longitudinal studies of pigs have been observational. The current experimental study had the advantages of greater control of potential confounding, precise measurement of antimicrobial exposures which differed markedly between groups and tracking of pigs until market age. Overall, resistance patterns were remarkably stable between the treatment groups over time, and the differences observed could not be readily reconciled with the antimicrobial exposures, indicating the likely importance of other determinants of antimicrobial resistance at the population level.
Today, we are sharing a publication from Drs. Davies and Singer regarding antimicrobial use in wean-to-market pigs in the United States based on self-reported data from swine producers and veterinarians. This work is published in Zoonoses and Public Health in open access.
Demonstrates the feasibility of obtaining data on antimicrobial use in the United States swine industry through sharing of proprietary records within industry.
Provides the first substantial description of antimicrobial use in United States swine beyond annual sales and distribution data.
Indicates that specific metrics of antibiotic use that focus on conditions within individual industries will be most useful to advance stewardship.