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

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

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

Antimicrobial resistance in fecal Escherichia coli and Salmonella enterica from dairy calves: a systematic review
Foodborne pathogens and disease, Springer, Hayley, Denagamage, Thomas, Fenton, Ginger, Haley, Bradd, Van Kessel, Jo Ann S, None, Hovingh, Ernest, 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, Karns, Jeffrey, Hovingh, Ernest, Wolfgang, David, Vinyard, Bryan, Kim, Seon, Salaheen, Serajus, Haley, Bradd, Van Kessel, Jo Ann S, None, 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

Antimicrobial Resistance in Fecal Escherichia coli and Salmonella enterica from Dairy Calves: A Systematic Review.
Foodborne pathogens and disease, Springer, Hayley, Denagamage, T, Fenton, G, Haley, B, VanKessel JAS, None, 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

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

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 Vaccine 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
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

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

Correlation between Herrold egg yolk medium culture and real-time quantitative polymerase chain reaction results for Mycobacterium avium subspecies paratuberculosis in pooled fecal and environmental samples
Journal of Veterinary Diagnostic Investigation, Aly, Sharif S., Mangold, Beverly L., Whitlock, Robert H., Sweeney, Raymond W., Anderson, Randall J., Jiang, Jiming, Schukken, Ynte H., Hovingh, Ernest, Wolfgang, David, van Kessel, Jo Ann S., Karns, Jeffrey S., Lombard, Jason E., Smith, Julia M., Gardner, Ian A., 2010