Sharif Aly

Sharif Aly

Professor

Population Health & Reproduction


Licenses
Veterinary Syndicate, Egypt
Education
2009, PhD, University of California, Davis, CA
2003, MPVM, University of California, School of Veterinary Medicine, Davis, CA
2004, Residency, University of California, School of Veterinary Medicine, Davis, CA
2001, Internship, University of Idaho, Caine Veterinary Teaching Center
1998, BVSc, University of Cairo, Egypt
1993, GCE, University of London,
1993, IGCSE, University of Cambridge,
Active Research Grants
Co-Principal Investigator, Effects of group housing on the phenotype and dynamics of antimicrobial resistance in commensal fecal (Escherichia coli and Enterococcus spp.) Populations isolated from California pre-weaned dairy calves, Terry Lehenbauer (Principal Investigator), Center for Food Animal Health - School of Veterinary Medicine, UC Davis
Co-Principal Investigator, Recycled flush and lagoon water as a reservoir for antibiotic residues and resistant bacteria on dairies, Emmanuel Okello (Principal Investigator), Center for Food Animal Health - School of Veterinary Medicine, UC Davis
Co-Principal Investigator, Pain management for calf disbudding: Educational outreach of a validated cornual nerve block technique in young dairy calves, Terry Lehenbauer (Principal Investigator), Center for Food Animal Health - School of Veterinary Medicine, UC Davis
Principal Investigator, Demonstration and outreach for control of stable flies and cattle bunching on California dairies, (Principal Investigator), Western Integrated Pest Management Center
Co-Principal Investigator, Developing an Integrated Pest Management Plan for Dairy Cattle in California, Alec Gerry (Principal Investigator), Western Integrated Pest Management Center
Co-Principal Investigator, Development of an economic tool to optimize mastitis management programs in California, Fernanda Ferreira (Principal Investigator), California Department of Food & Agriculture
Principal Investigator, Climatic conditions as a predictor for BRD in Preweaned dairy calves, (Principal Investigator), Center for Food Animal Health - School of Veterinary Medicine, UC Davis
Co-Principal Investigator, Foster calves as a management tool to reduce mastitis, antibiotic use and culling rates while improving calf growth, health and welfare, Carlos E. Hernandez (Principal Investigator), Swedish STINT Initiation grants for internationalisation
Co-Investigator, Evaluation of an antibiogram framework from commercial dairy farms in California for bovine respiratory disease bacterial pathogens, Richard Pereira (Principal Investigator), California Department of Food and Agriculture
Honors and Awards
2003 Jastro Shields Graduate Research Scholarship Award, MPVM, UC Davis
2003-2004 House officers Grant, Veterinary Medical Teaching Hospital, 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
2006 Block Grant Award, Graduate Group in Epidemiology, UC Davis
2006 Graduate Student Support Program (GSSP), School of Veterinary Medicine, UC Davis
2008 Austin Eugene Lyon’s Fellow, Graduate Studies, University of California, Davis
2008 Graduate Student Support Program (GSSP), School of Veterinary Medicine, UC Davis
2013 Academic Senate Research Travel Grant
2021 Top 100 Journal Dairy Science author
Most Recent Five Book Chapters
2021 Aly SS, Depenbrock S: Preventing bacterial diseases in dairycattle, eBouchard , (ed), Improving dairy herd health, . .
Research Focus

Dairy cattle health

  • Epidemiology of antimicrobial resistance
  • Prevention and control of calf diarrhea and pneumonia
  • Epidemiology of mastitis, salmonellosis and Johnes Disease
  • Shiga-toxin producing E. coli shedding in dairy cattle

Dairy Cattle welfare

  • Humane euthanasia of cattle
  • Impact of group housing on calf welfare
  • Epidemiology and impact of bunching, cattle's protective aggregative behavior against stable flies
Specialty Focus

Biostatistics

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

Epidemiology

  • Observational studies of infectious diseases and health conditions of food animals.
  • Experimental studies
  • Mathematical modeling of infectious diseases and antimicrobial resistance in food animals
  • Diagnostic test evaluation
Ten Recent Publications

2021
Jeamsripong S, Li X, Aly SS, Su Z, Pereira RVV, Atwill ER
Antibiotic resistance genes and associated phenotypes in Escherichia coli and Enterococcus from cattle at different production stages on a dairy farm in Central California.

2021
Wang Y, Pandey PK, Kuppu S, Pereira RVV, Aly SS, Zhang R
Degradation of antibiotic resistance genes and mobile gene elements in dairy manure anerobic digestion.

2021
Chauhan K, Aly SS, Lehenbauer TW, Tonooka KH, Glenn K, Rossitto P, Marco ML
Development of a multiplex qPCR assay for the simultaneous detection of Mycoplasma bovis, Mycoplasma species, and Acholeplasma laidlawii in milk

2021
ElAshmawy WR, Abdelfattah EM, Williams DR, Gerry AC, Rossow HA, Lehenbauer TW, Aly SS^
Stable fly activity is associated with dairy management practices and seasonal weather conditions.

2021
Pandit PS, Williams DR, Rossitto P, Adaska JM, Pereira R, Lehenbauer TW, Byrne BA, Li X, Atwill ER, Aly SS^
Dairy management practices associated with multi-drug resistant fecal commensals and Salmonella in cull cows: a machine learning approach

2021
Ekong PS, Abdelfattah EM, Okello E, Williams DR, Lehenbauer TW, Karle BM, Rowe JD, Aly SS^
2018 Survey of factors associated with antimicrobial drug use and stewardship practices in adult cows on conventional California dairies: immediate post-Senate Bill 27 impact

2021
Ekong PS, Abdelfattah EM, Okello E, Williams DR, Lehenbauer TW, Karle BM, Rowe JD, Marshall ES, Aly SS^
2018 Survey of antimicrobial drug use and stewardship practices in adult cows on California dairies: post-Senate Bill 27

2021
Abdelfattah EM, Ekong PS, Okello E, Williams DR, Karle BM, Rowe JD, Marshall ES, Lehenbauer TW, Aly SS^
2019 Survey of Antimicrobial Drug Use and Stewardship Practices in Adult Cows on California Dairies: Post Senate Bill 27

2021
Sheedy DB, Okello E, Williams DR, Precht K, Cella E, Lehenbauer TW, Aly SS^
Effect of Antimicrobial Treatment on the Dynamics of Ceftiofur Resistance in Enterobacteriaceae from Adult California Dairy Cows

2021
Lucey PM, Lean IJ, Aly SS, Golder HM, Block E, Thompson JS, Rossow HA
Effects of mannan-oligosaccharide and Bacillus subtilis supplementation to preweaning Holstein dairy heifers on body weight gain, diarrhea, and shedding of fecal pathogens