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.
University of Minnesota researchers Mariana Kikuti, Miranda Medrano, Marcello Melini, Carles Vilalta, Juan Sanhueza, Emily Geary, Cesar Corzo compare PRRSV disease status between systems that originally shared their sow herd status with MSHMP and those that joined the program later.
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 we take a look at PRRS EWMA patterns in Iowa, North Carolina, Minnesota, Oklahoma, Nebraska and Illinois, thanks to research done by Mariana Kikuti, Emily Geary, Paulo Fioravante, Marcello Melini, Miranda Medrano, Cesar Corzo.
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.
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.
The Morrison Swine Health Monitoring Project take a look at whether PRRSv cases associated with the linage 1C, RFLP 1-4-4 variant can be detected in the outside areas of farms undergoing an outbreak.
Key Points
There is little understanding of contributing factors aiding the 1-4-4 L1C PRRSv rapid transmission and biosecurity breaches
Environmental detection in recently infected farms was possible although detection was low
Most positive samples originated from exhausting fans, showing the virus may exit a positive barn via that route
