Peter R. Davies

Reduction of Influenza A Virus Prevalence in Pigs at Weaning After Using Custom-Made Influenza Vaccines in the Breeding Herds of an Integrated Swine Farm System

Jorge Garrido‐Mantilla, Juan Manuel Sanhueza, Julio Álvarez, Jeremy Pittman et autres

Vaccination is a common influenza A virus (IAV) control strategy for pigs. Vaccine efficacy depends on strain cross-protection and effective vaccination program implementation. We evaluated a multi-faceted IAV vaccination strategy which included (a) monthly surveillance of pigs at weaning, (b) selection of …

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Reduction of Influenza a Virus Prevalence in Pigs at Weaning After Using Custom-Made Influenza Vaccines in the Breeding Herds of an Integrated Swine Farm System

Juan Manuel Sanhueza, Julio Álvarez, Jeremy Pittman, Peter R. Davies et autres

Vaccination is a common influenza A virus (IAV) control strategy for pigs. Vaccine efficacy depends on strain cross-protection and effective vaccination program implementation. We evaluated a multi-faceted IAV vaccination strategy which included: a) monthly surveillance of pigs at weaning, b) selection of …

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Slaughtering processes impact microbial communities and antimicrobial resistance genes of pig carcasses

Tara N. Gaire, Carissa A. Odland, Bingzhou Zhang, Ilya B. Slizovskiy et autres

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Infection dynamics and incidence of wild-type porcine reproductive and respiratory syndrome virus in growing pig herds in the U.S. Midwest

Jose Angulo, My Yang, Albert Rovira, Peter R. Davies et autres

Porcine reproductive and respiratory syndrome virus (PRRSV) infections greatly impact the health and productivity of growing pigs. The introduction and persistence of wild-type PRRSV (WT-PRRSV) strains in growing pig populations is poorly understood. In an observational prospective cohort study, we monitored and …

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Farm management practices associated with influenza A virus contamination of people working in Midwestern United States swine farms

Gustavo Lopez‐Moreno, Marie Rene Culhane, Peter R. Davies, Cesar A. Corzo et autres

Indirect transmission of influenza A virus (IAV) contributes to virus spread in pigs. To identify farm management activities with the ability to contaminate farmworkers' hands and clothing that then could be a source of virus spread to other pigs, we conducted a …

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Animal performance and meat quality characteristics from feedlot-finished steers fed increasing levels of wet distillers grain

L.B. Pouzo, Irene Ceconi, Peter R. Davies, Daniel Gustavo Mendez et autres

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Evaluation of dam parity and internal biosecurity practices in influenza infections in piglets prior to weaning

Gustavo Lopez‐Moreno, Jorge Garrido‐Mantilla, Juan Manuel Sanhueza, Aaron Rendahl et autres

Influenza is an important respiratory disease of pigs and humans. Controlling influenza in pigs is challenging due to the substantial genetic diversity of influenza A virus (IAV). In this study, we assessed the impact of internal biosecurity practices directed at limiting exposure …

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The impacts of viral infection and subsequent antimicrobials on the microbiome-resistome of growing pigs

Tara N. Gaire, Carissa A. Odland, Bingzhou Zhang, Tui Ray et autres

BACKGROUND: Antimicrobials are used in food-producing animals for purposes of preventing, controlling, and/or treating infections. In swine, a major driver of antimicrobial use is porcine reproductive and respiratory syndrome (PRRS), which is caused by a virus that predisposes infected animals to secondary …

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Evidence of influenza A infection and risk of transmission between pigs and farmworkers

Gustavo Lopez‐Moreno, Peter R. Davies, My Yang, Marie Rene Culhane et autres

Interspecies transmission of influenza A virus (IAV) between pigs and people represents a threat to both animal and public health. To better understand the risks of influenza transmission at the human-animal interface, we evaluated 1) the rate of IAV detection in swine …

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Additional file 2 of The impacts of viral infection and subsequent antimicrobials on the microbiome-resistome of growing pigs

Tara N. Gaire, Carissa A. Odland, Bingzhou Zhang, Tui Ray et autres

Additional file 2: Dataset S1. Metadata for all samples presented in this study. Dataset S2. Results from microbiome (phylum and genus level) differential abundance testing of each treatment group, by sampling time point. Dataset S3. Results from microbiome (phylum and genus level) …

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Evaluation of the Impact of Antimicrobial Use Protocols in Porcine Reproductive and Respiratory Syndrome Virus-Infected Swine on Phenotypic Antimicrobial Resistance Patterns

Carissa A. Odland, Roy A. Edler, Noelle Robertson Noyes, Scott A. Dee et autres

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 …

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Impact of nurse sows on influenza A virus transmission in pigs under field conditions

Jorge Garrido‐Mantilla, Juan Manuel Sanhueza, Julio Álvarez, Marie Rene Culhane et autres

Piglets prior to weaning play a central role in maintaining influenza infections in breeding herds and the use of nurse sows is a common practice to adopt piglets that fall behind and that otherwise would die. Transmission of influenza A virus (IAV) …

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