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Deirdre Purfield

Post Doctoral Research Officer

Research Interests

  • Genomics
  • Genomic management tools to optimise resilience and efficiency
  • Genome-wide association studies
  • Across-breed genomic predictions
  • Genomic characterization
  • Population genetics
  • Whole genome sequence and imputation. 

Current Projects

  • Multi-breed genomic selection in dairy and beef cattle
  • GenTORE: Genomic Management Tools to Optimise Resilience and Efficiency


Ph.D in Genetics, Trinity College Dublin
B.A (Mod) Biochemistry with cell biology, Trinity College Dublin, Ireland


Aug 2014-ongoing. Post-doctoral researcher
Feb 2017- May 2017. Visiting researcher University of Missouri, USA
Mar 2015-Aug 2015. Sabbatical Agribio/ La Trobe University, Australia
Oct 2010-Aug 2014. PhD in Statistical Genomics, Trinity College Dublin

Purfield, D.C., McParland, S., Wall, E. and Berry, D.P. 2017. Runs of Homozygosity and Selection Signatures in Six Commercial Meat Sheep Breeds. Plos one.

Judge, M.M, Purfield, D.C., Sleator, R.D., and Berry, D.P. 2017. Impact of multi-generational genotype imputation strategies on imputation accuracy and genomic predictions. Journal of Animal Science.

Berry, D.P., Wolfe, A., O’Donovan, J., Byrne, N., Sayers,R., O’Connor, R.E., McClure, M., and Purfield, D.C. 2017.Characterisation of a X-chromosomal non-mosaic monosomy (59, X0) dairy heifer detected using routinely available genotype data. Journal of Animal Science

Iacolina L, Stronen, A.V.,Pertoldi, C.,Tokarska, M.,Nørgaard, L.S., Muñoz, J.,Kjærsgaard, A., González, A.R.,Kamiñski, S., and Purfield, D.C., 2016. Novel graphical analyses of runs of homozygosity among species and livestock breed. International Journal of Genomics. vol. 2016, Article ID 2152847

Purfield, D.C., McClure, M., and Berry, D. P. 2016. Justification for setting the individual animal call rate threshold at 85%. Journal of Animal Science. Nov;94(11):4558-4569

Kelleher, M.M., Berry, D.P., Kearney, J.F., McParland, S., Buckley, F, Purfield, D.C., 2016. Inference of population structure of purebred dairy and beef cattle using high density genotype data. Animal Jun 22:1-9

Purfield, D.C, Bradley, D.G., Kearney, J.F., & Berry, D.P. 2015. Genome-wide association study using high density genotypes for calving performance in several cattle breeds. Genetics Selection Evolution Jun 12;47:47

Purfield, D.C, Bradley, D.G., Kearney, J.F., & Berry, D.P. 2014. Genome-wide association study for calving traits in Holstein-Friesian cattle. Animal Feb;8(2):224-35.

Purfield, D.C., Berry, D.P., McParland, S., & Bradley, D.G. 2012. Runs of homozygosity and population history in cattle. BMC Genetics 13:70