Ernest Hovingh, DVM, PhD

Ernest Hovingh, DVM, PhD

  • Associate Research Professor
  • Extension Veterinarian
126 Central Milk Testing Laboratory
Apple Lane

University Park, PA 16802

Areas of Expertise

  • Mastitis and Milk Quality
  • Milking Equipment Performance
  • Bovine Hoof Health
  • Antimicrobial Resistance
  • On-farm Food Safety
  • Johne's Disease
  • Biosecurity and Infectious Disease Management
  • Epidemiology

Education

  • PhD, Epidemiology, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, PEI, Canada, 1998
  • Residency, Dairy Ambulatory Medicine, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, PEI, Canada, 1995
  • DVM, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada, 1990

Program Areas

  • Biosecurity and Infectious Disease Control
  • Lameness
  • Milking Parlor Management
  • Johne's Disease
  • On-Farm Epidemiology
  • Animal Welfare and Well-Being

Memberships

  • American Association of Extension Veterinarians
  • International Society for Veterinary Epidemiology and Economics
  • National Mastitis Council
  • Pennsylvania Veterinary Medical Association
  • United States Animal Health Association

Professional Experience

2004-Present: Associate Research Professor, Veterinary Extension and Field Investigation, Department of Veterinary & Biomedical Science, Pennsylvania State University.

1999-2003: Assistant Professor of Ruminant Health/Veterinary Extension Specialist, Virginia-Maryland Regional College of Veterinary Medicine, Blacksburg, VA. 

1998: Lecturer, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, PE, Canada. 

1990-1992: Associate Veterinarian, Ontario, Canada.

Selected Publications

Schewe, R.L., J. Kayitsinga, G.A. Contreras, C. Odom, W.A. Coats, P Durst, E.P. Hovingh, R.O. Martinez, R. Mobley, S. Moore, and R.J. Erskine.  "Herd Management and Social Variables Associated with Bulk Tank Somatic Cell Counts in Dairy Herds in the Eastern United States." (2015).  J. Dairy Science, 98(11): 7650-7665.

Haley, B.J., M. Allard, E. Brown, E. Hovingh, J.S. Karns, and J.S.van Kessel. "Molecular Detection of the Index Case of a Subclinical Salmonella Kentucky Epidemic on a Dairy Farm." (2015). Epidemiology and Infection, 143(04): 682-686.

Lu, Z., Y.T. Gröhn, R.L. Smith, J.S. Karns, E. Hovingh, and Y.H. Schukken. "Stochastic Modeling of Imperfect Salmonella Vaccines in an Adult Dairy Herd." (2014). Bulletin of Mathematical Biology. 76(3):541-565.

Tewari, D., E. Hovingh, R. Linscott, E. Martel, J. Lawrence, D. Wolfgang, and D. Griswold. "Mycobacterium avium subsp. paratuberculosis Antibody Response, Fecal Shedding, and Antibody Cross-Reactivity to Mycobacterium bovis in M. avium subsp. paratuberculosis-Infected Cattle Herds Vaccinated against Johne's Disease."  (2014). Clin Vaccine Immunol., 21(5): 698-703.

Van Kessel, J.S., J.S. Karns, D.R. Wolfgang, and E. Hovingh. "Regional Distribution of Two Dairy-Associated Salmonella enterica Serotypes."  (2013). Foodborne Pathogens and Disease, 10(5): 448-452.

Van Kessel, J. S., J. S. Karns, D. R. Wolfgang, E. Hovingh, and Y. H. Schukken.  (2012). Dynamics of Salmonella serotype shifts in an endemically infected dairy herd. Foodborne Pathogens and Disease, 9:319-324.

Pradhan, A.K., R.M. Mitchell, A.J. Kramer, M.J. Zurakowski, T.L. Fyock, R.H. Whitlock, J.M. Smith, E. Hovingh, J.S. Van Kessel, J.S. Karns, and Y.H. Schukken. "Molecular Epidemiology of Mycobacterium avium subsp. paratuberculosis in a Longitudinal Study of Three Dairy Herds." (2011). J. Clin Microbiol., 49(3):893-901.

Aly, S.S., B.L. Mangold, R.H. Whitlock, R.W. Sweeney, R.J. Anderson, J.Jiang, Y.H. Shukken, E. Hovingh, D. Wolfgang, J.S. Van Kessel, J.S. Karns, J.E. Lombard, J.M. Smith, and I.A. Gardner. "Correlation between Herrold's egg yolk medium culture and real-time quantitative polymerase chain reaction results for Mycobacterium avium subspecies paratuberculosis in pooled fecal and environmental samples." (2010).  J Vet Diagn Invest., 22(5): 677-83.

Pradhan, A.K., J.S. Van Kessel, J.S. Karns, D.R. Wolfgang, E. Hovingh, K.A. Nelen, J.M.Smith, R.H. Whitlock, T. Fyock, T. S. Ladely, P.J. Fedorka-Cray, Y.H. Schukken. "Dynamics of endemic infectious diseases of animal and human importance on three dairy herds in the northeastern United States." (2009). J. Dairy Sci., 92:1811-1825.

Van Kessel, J.S., J.S. Karns, D.R. Wolfgang, E. Hovingh, B.M. Jayarao, C.P. Van Tassell, Y.H. Schukken. "Environmental Sampling to Predict Fecal Prevalence of Salmonella in an Intensively Monitored Dairy Herd." (2008).  J. Food Protection, 71:1967-1973.

Chapagain, P.P., J.S. Van Kessel, J.S. Karns, D.R. Wolfgang, E. Hovingh, K.A. Nelen, Y.H. Schukken, and Y.T. Grohn. "A Mathematical Model of the Dynamics of Salmonella Cerro Infection in a US Dairy Herd." (2008). Epidemiology and Infection, 136:263-272.

Publications

Metagenomic Analysis of the Microbial Communities and Resistomes of Veal Calf Feces
Frontiers in Microbiology, Salaheen, Serajus, Kim, Seon Woo, Hovingh, Ernest, Van Kessel, Jo Ann S., Haley, Bradd J., 2021

Effects of postpartum acetylsalicylic acid on metabolic status, health, and production in lactating dairy cattle
Journal of Dairy Science, Barragan, A. A., Hovingh, E., Bas, S., Lakritz, J., Byler, L., Ludwikowski, A., Takitch, S., Zug, J., Hann, S., 2020

Differences in the microbial community and resistome structures of feces from preweaned calves and lactating dairy cows in commercial dairy herds
Foodborne Pathogens and Disease, Haley, Bradd J., Kim, Seon Woo, Salaheen, Serajus, Hovingh, Ernest, Van Kessel, Jo Ann S., 2020

Metagenomic analysis of the fecal microbiomes from Escherichia coli O157:H7-shedding and non-shedding cows on a single dairy farm
Food Control, Salaheen, Serajus, Kim, Seon Woo, Karns, Jeffrey S., Hovingh, Ernest Peter, Haley, Bradd J., Van Kessel, Jo Ann S., 2019

Short communication: Assessment of biomarkers of inflammation in the vaginal discharge of postpartum dairy cows diagnosed with clinical metritis
Journal of Dairy Science, Barragan, Adrian, Lakritz, J., Carman, M. K., Bas, S., Hovingh, Ernest Peter, Schuenemann, G. M., 2019

Diversity of extended-spectrum cephalosporin-resistant escherichia coli in feces from calves and cows on Pennsylvania dairy farms
Foodborne Pathogens and Disease, Salaheen, Serajus, Cao, Huilin, Sonnier, Jakeitha L., Kim, Seon Woo, Del Collo, Laura P., Hovingh, Ernest Peter, Karns, Jeffrey S., Haley, Bradd J., Van Kessel, Jo Ann S., 2019

Age-associated distribution of antimicrobial-resistant salmonella enterica and escherichia coli isolated from dairy herds in pennsylvania, 2013-2015
Foodborne Pathogens and Disease, Cao, Huilin, Pradhan, Abani K., Karns, Jeffrey S., Hovingh, Ernest Peter, Wolfgang, David R., Vinyard, Bryan T., Kim, Seon Woo, Salaheen, Serajus, Haley, Bradd J., Van Kessel, Jo Ann S., 2019

Antimicrobial resistance in fecal escherichia coli and salmonella enterica from dairy calves
Foodborne Pathogens and Disease, Springer, Hayley R., Denagamage, Thomas N., Fenton, Ginger D., Haley, Bradd J., Van Kessel, Jo Ann S., Hovingh, Ernest P., 2019

"QMSC Milk Microbiology Fundamentals." (video), Hovingh, Ernest, 2019

Effects of a new preventive strategy with acetylsalicylic acid on uterine diseases and reproductive performance in dairy cows.
Journal of Dairy Sci, Barragan, A, Bas, S, Hovingh, Ernest, Ludwikowski, A, Takitch, S., Zug, J, Hann, S, 2019

Effects of a new preventive strategy with acetylsalicylic acid on daily milk yield, milk conductivity and rumination in dairy cows after calving.
Journal of Dairy Sci, Ludwikowski, A, Barragan, A, Bas, S, Hovingh, Ernest, Takitch, S., Zug, J, Hann, S, 2019

Antimicrobial resistance among escherichia coli isolated from veal calf operations in Pennsylvania
Foodborne Pathogens and Disease, Salaheen, Serajus, Kim, Seon Woo, Cao, Huilin, Wolfgang, David R., Hovingh, Ernest Peter, Karns, Jeffrey S., Haley, Bradd J., Van Kessel, Jo Ann S., 2019

Erratum
Microbiology Resource Announcements, Byukusenge, Maurice, Nissly, Ruth Helmus, Kasibhatla, Sunitha Manjari, Li, Lingling, Russell, Rebekah, Springer, Hayley, Barry, Rhiannon, Van Saun, Robert, Wolfgang, David, Hovingh, Ernest, Kulkarni-Kale, Urmila, Kuchipudi, Suresh V., 2018

"Preventing Lameness in Dairy Cattle." (video), Hovingh, Ernest, 2018

"Lameness in Dairy Herds – Part 2: Sorting Out Common Causes." (Article), Hovingh, Ernest, 2018

"Intelligent Mastitis Management." (video), Hovingh, Ernest, 2018

"Cleaning and Maintaining Milking Systems." (video), Hovingh, Ernest, 2018

Longitudinal relationship between fecal culture, fecal quantitative PCR, and milk ELISA in Mycobacterium avium ssp. paratuberculosis-infected cows from low-prevalence dairy herds
Journal of Dairy Science, Beaver, A., Sweeney, R. W., Hovingh, Ernest Peter, Wolfgang, D. R., Gröhn, Y. T., Schukken, Y. H., 2017

"Lameness, Hoof and Leg Issues in Dairy Cattle." (video), Hovingh, Ernest, 2017

"Farm Biosecurity Best Practices Course for Contractors, Vendors, and Visitors." (Course), Hovingh, Ernest, Messersmith, D, Murphy, T, 2017

"Cattle Euthanasia." (video), Hughes, C., Santini, E., Hovingh, Ernest, 2017

"Biosecurity Risk of Vets, Ag Service Personnel and Visitors." (Article), Hovingh, Ernest, 2017

"Biosecurity Overview." (Article), Hovingh, Ernest, 2017

"Biosecurity Fundamentals." (Article), Hovingh, Ernest, 2017

"Table of Disinfectants used on the Farm." (Article), Hovingh, Ernest, 2016

"Risk Assessment: Bovine Leukemia Virus (BLV)." (Article), Hovingh, Ernest, 2016

"Risk Assessment for Salmonella in Dairy Herds." (Article), Hovingh, Ernest, 2016

"Mastitis, Udder Health, and Milk Quality." (Article), Hovingh, Ernest, 2016

"Lameness in Dairy Herds – Part 1: Defining & Monitoring the Situation." (Article), Hovingh, Ernest, 2016

"Johne's Disease Contacts." (Article), Hovingh, Ernest, 2016

"Johne's Certified Veterinarian Training." (Article), Hovingh, Ernest, Zellner, D., 2016

"Foot and Mouth Disease – The Risk Posed by Importation of Beef." (Article), Hovingh, Ernest, 2016

"Feed Management and Delivery." (Article), Vansaun, R, Hovingh, Ernest, 2016

"FARM Program Version 3.0." (Video), Hovingh, Ernest, 2016

"Environmental Sampling for Johne's Disease." (Article), Hovingh, Ernest, Tewari, D., 2016

"Contagious Mastitis Organisms in Dairy Herds." (Article), Hovingh, Ernest, 2016

"Can I Really Prevent My Cows from Becoming Lame?" (video), Hovingh, Ernest, 2016

"Biosecurity: A Practical Approach" (Article), Hovingh, Ernest, 2016

"Biosecurity Risk Assessment: Johne's Disease." (Article), Hovingh, Ernest, Wolfgang, D, 2016

Herd management and social variables associated with bulk tank somatic cell count in dairy herds in the eastern United States
Journal of Dairy Science, Schewe, R. L., Kayitsinga, J., Contreras, G. A., Odom, C., Coats, W. A., Durst, P., Hovingh, Ernest Peter, Martinez, R. O., Mobley, R., Moore, S., Erskine, R. J., 2015

Molecular detection of the index case of a subclinical Salmonella Kentucky epidemic on a dairy farm
Epidemiology and Infection, Haley, B. J., Allard, M., Brown, E., Hovingh, E., Karns, J. S., Van Kessel, J. S., 2015

"Milking System Operation and Maintenance." (video), Hovingh, Ernest, 2015

"Hoof health: Feet & floors." (video), Hovingh, Ernest, Mc Farland, D, 2015

"Dairy Farm Biosecurity." (video), Hovingh, Ernest, Tyson, J, 2015

Mycobacterium avium subsp. paratuberculosis antibody response, fecal shedding, and antibody cross-reactivity to Mycobacterium bovis in M. avium subsp. paratuberculosis-infected cattle herds vaccinated against Johne's disease
Clinical and Diagnostic Laboratory Immunology, Tewari, Deepanker, Hovingh, Ernest, Linscott, Rick, Martel, Edmond, Lawrence, John, Wolfgang, David, Griswold, David, 2014

Stochastic Modeling of Imperfect Salmonella Vaccines in an Adult Dairy Herd
Bulletin of Mathematical Biology, Lu, Zhao, Gröhn, Yrjö T., Smith, Rebecca L., Karns, Jeffrey S., Hovingh, Ernest, Schukken, Ynte H., 2014

Brief communication communication brève: Persistence of Mycobacterium avium subsp. paratuberculosis in soil, crops, and ensiled feed following manure spreading on infected dairy farms
Canadian Veterinary Journal, Fecteau, Marie Eve, Hovingh, Ernest, Whitlock, Robert H., Sweeney, Raymond W., 2013

Regional distribution of two dairy-associated salmonella enterica serotypes
Foodborne Pathogens and Disease, Van Kessel, Jo Ann S., Karns, Jeffrey S., Wolfgang, David R., Hovingh, Ernest Peter, 2013

"Biosecurity Signs." (Tool), Hovingh, Ernest, Byler, L., 2013

Dynamics of Salmonella serotype shifts in an endemically infected dairy herd
Foodborne Pathogens and Disease, Van Kessel, Jo Ann S, Karns, Jeffrey S., Wolfgang, David R., Hovingh, Ernest Peter, Schukken, Ynte H., 2012

Molecular epidemiology of Mycobacterium avium subsp. paratuberculosis in a longitudinal study of three dairy herds.
Journal of Clinical Microbiology, Pradhan, A, Mitchell, R, Kramer, A, Zurakowski, M, Fyock, T, Whitlock, R, Smith, Jonah, Hovingh, Ernest, Van Kessel, J, Karns, J, Schukken, Y, 2011