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Photo: Sharif Aly

Sharif Aly- BVSc, MPVM, PhD
Associate Professor
Population Health & Reproduction


Research Focus

Dairy cattle health and welfare

  • calf health (diarrhea, respiratory disease)
  • adult cattle health (mastitis, Johnes Disease)
  • Shiga-toxin producing E. coli shedding in dairy cattle
  • Humane euthanasia of cattle

Specialty Focus


  • Observational studies of infectious diseases and health conditions of food animals.
  • Experimental studies that conform to standard reporting guidelines (REFLECT statement).
  • Mathematical modeling of infectious diseases of food animals
  • Diagnostic test evaluation


  • Mixed models
  • Survey sampling
  • Reliability and repeatability gauge studies
  • Intraclass correlation coefficient


2009 PhD Epidemiology, University of California, Davis, CA
2003 MPVM Master of Preventive Veterinary Medicine, University of California, School of Veterinary Medicine, Davis, CA
2004 Residency Food Animal Reproduction and Herd Health, University of California, School of Veterinary Medicine, Davis, CA
2001 Internship Food Animal Production Medicine Internship, University of Idaho, Caine Veterinary Teaching Center
1998 BVSc Veterinary Medicine, University of Cairo, Egypt
1993 GCE General Certificate of Education, Advanced level, University of London,
1993 IGCSE International General Certificate of Secondary Education, University of Cambridge,

Honors and Awards

2013 Academic Senate Research Travel Grant
2008 Austin Eugene Lyon’s Fellow, Graduate Studies, University of California, Davis
2008 Graduate Student Support Program (GSSP), School of Veterinary Medicine, UC Davis
2006 Block Grant Award, Graduate Group in Epidemiology, UC Davis
2006 Graduate Student Support Program (GSSP), School of Veterinary Medicine, UC Davis
2005 Block Grant Award, Graduate Group in Epidemiology, UC Davis
2005 Travel Award, International Association of Paratuberculosis
2005 George Stabenfeldt Travel Award, MPVM research presented at International Colloquium of Paratuberculosis, Denmark, August
2003-2004 House officers Grant, Veterinary Medical Teaching Hospital, UC Davis
2003 Jastro Shields Graduate Research Scholarship Award, MPVM, UC Davis


Veterinary Syndicate, Egypt

Active Research Grants

Co-Principal Investigator, Integrated program for reducing bovine respiratory disease in beef and dairy cattle, Terry Lehenbauer (Principal Investigator), USDA, AFRI, NIFA

Principal Investigator, Risk assessment, welfare analysis, and extension education for dairy calf respiratory disease management in California, (Principal Investigator), UC Davis: Agriculture and Natural Resources Competitive Grant Program

Principal Investigator, Effect of environment on risk of respiratory disease in nursing calves, (Principal Investigator), American Association of Bovine Practioners

Principal Investigator, Shiga-toxigenic Escherichia coli (STEC) in the beef chain: assessing and mitigating by translational science, education and outreach, (Principal Investigator), USDA

Principal Investigator, Use of water samples from drinking troughs for early identification of infected animals; proof of concept using Orf as a model for Foot-and-Mouth Disease, (Principal Investigator), UC Davis: SVM: Center for Food Animal Health

Principal Investigator, The effectiveness of zinc supplemented oral rehydration solution on fecal output, recovery and mortality rates in neonatal Holstein calves with diarrhea: Inorganic zinc compounds as a treatment for calf diarrhea, (Principal Investigator), UC Davis: SVM: Center for Food Animal Health

Principal Investigator, Association between gram negative non-fermenting bacteria in the upper respiratory tract of calves on the presence of opportunistic bacterial pathogens and clinical respiratory disease, (Principal Investigator), Center for Food Animal Health, SVM, UC Davis

Principal Investigator, Update on spatial and temporal correlation of Mycoplasma bulk tank prevalence with temperature, humidity and rainfall in California, a decade’s worth of data, (Principal Investigator), UC Davis: SVM: Center for Food Animal Health

Co-Investigator, Comparision of nasopharyngeal swabs, pharyngeal recess swabs, bronchoalveolar lavage, and transtracheal wash for detecting bacterial and viral pathogens in dairy calves with bovine respiratory disease, Terry Lehenbauer (Principal Investigator), UC Davis: SVM: Center for Food Animal Health

Co-Principal Investigator, Rapid methods for microbial detection and quality assessment of milk, Maria Marco (Principal Investigator), California Dairy Research Foundation

Co-Principal Investigator, Effect of an anti-secretory diarrhea product on prevention of neonatal calf diarrhea, mineral absorption and preweaning growth., Heidi Rossow (Principal Investigator), Jaguar Animal Health

Most Recent 10 Publications

  • Link Icon 2014 Blanc CD, Van der List M, Aly SS, Rossow HA, Silva-del-Río N Blood calcium dynamics after prophylactic treatment of subclinical hypocalcemia with oral or intravenous calcium J Dairy Sci,
  • Link Icon 2014 Aly SS, Anderson RJ, Whitlock RH, Adaska JM Sensitivity and specificity of two enzyme-linked immunosorbent assays and a quantitative real-time polymerase chain reaction for bovine paratuberculosis testing of a large dairy herd Intern J Appl Res Vet Med,
  • Link Icon 2014 Williams DR, Pithua P, Garcia A, Champagne J, Haines D, Aly SS Effect of three colostrum diets on passive transfer of immunity and preweaning health in calves on a California dairy following colostrum management training Vet Med Int,
  • Link Icon 2014 Brito BP, Aly SS, Anderson RJ, Fossler CP, Garry FB, Gardner IA Association between caudal fold tuberculin test responses and results of an ELISA for Mycobacterium avium subsp paratuberculosis and mycobacterial culture of feces in tuberculosis-free dairy herds J Am Vet Med Assoc,
  • Link Icon 2014 Murai K, Lehenbauer TW, Champagne JD, Glenn K, Aly SS Cost-effectiveness of diagnostic strategies using quantitative real-time PCR and bacterial culture to identify contagious mastitis cases in large dairy herds Pre Vet Med,
  • Link Icon 2014 Aly SS, Zhao J, Li B, Jiang J Reliability of environmental sampling culture results using the negative binomial intraclass correlation coefficient SpringerPlus,
  • Link Icon 2014 Jeong J, Aly SS, Cano JP, Polson D, Kass PH, Perez AM A stochastic mathematical model of porcine reproductive and respiratory syndrome virus control measures in a swine farm in the United States Am J Vet Res,
  • Link Icon 2014 Lucena JA, Kenyon AG, Reynolds JP, Moreno JF, Lenz RW, Carroll D, Lehenbauer TW, Champagne JD, Aly SS Comparison between low dose high sort and a high dose low sort semen on conception and calf gender ratio in Jersey heifers and cows J Dairy Sci,
  • Link Icon 2014 Aly SS, Rossow HA, Acetoze G, Lehenbauer TW, Payne M, Meyer D, Maas J, Hoar B Survey of beef quality assurance on California dairies J Dairy Sci,
  • Link Icon 2014 Adaska JM, Aly SS, Moeller RB, Blanchard PC, Anderson M, Kinde H, Uzal F Jejunal hematoma in cattle: A retrospective case analysis J Vet Diag Inv,