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Assistant Professor of Animal Breeding and Genetics at Wageningen University & Research
Courses and Programs taught by dr.ir. P (Piter) Bijma
Publications by dr.ir. P (Piter) Bijma
On the definition and utilization of heritable variation among hosts in reproduction ratio R0 for infectious diseases. Anche, M.T. ; Jong, M.C.M. de; Bijma, P. (2014). Heredity 113 (4). - p. 364 - 374.
The prospects of selection for social genetic effects to improve welfare and productivity in livestock. Ellen, E.D. ; Rodenburg, T.B. ; Albers, G.A.A. ; Bolhuis, J.E. ; Camerlink, I. ; Duijvesteijn, N. ; Knol, E.F. ; Muir, W.M. ; Peeters, K.L.M. ; Reimert, I. ; Sell-Kubiak, E.B. ; Arendonk, J.A.M. van; Visscher, J. ; Bijma, P. (2014). Frontiers in Genetics 5
A General Definition of the Heritable Variation that Determines the Potential of a Population to Respond to Selection. P. Bijma (2011). Genetics 189 (4). - p. 1347 - 1359.
Estimating Indirect Genetic Effects: Precision of Estimates and Optimum Designs. P. Bijma (2010). Genetics 186 . - p. 1013 - 1028.
Fisher's fundamental theorem of inclusive fitness and the change in fitness due to natural selection when conspecifics interact. P. Bijma (2010). Journal of Evolutionary Biology 23 (1). - p. 194 - 206.
I work for Wageningen University (WU) since 1996, in the area of animal breeding and genetics. From 1996 to 2000, I did my PhD-research at WU on the topic "Prediction of rates of inbreeding in selected populations", which was done in close collaboration with Prof. John Woolliams of the Roslin Institute. Since 2001, I am assistant professor at the Animal Breeding and Genomics Centre.
In the past 10 years, my research has mainly focussed on the quantitative genetics of social interactions among individuals, in close collaboration with dr. Esther Ellen. Using so-called Indirect Genetic Effects (IGE) models, I have shown that IGE can contribute substantially to heritable variation and response to selection, but breeders may need to modify their breeding schemes in order to utilize this heritable variation. Recently I have been working on extending those models to infectious diseases, in collaboration with Prof. Mart de Jong. Since 2001, I have supervised 12 PhD-students on a variety of topics, and currently I am supervising 6 PhD-students. I am a teacher in the BSc-course Animal Breeding and Genetics, and in the MSc-courses Population and Quantitative Genetics and Life History Evolution.
More recently my research focus has shifted to the integration of quantitative epidemiology and quantitative genetics, in collaboration with Prof. Mart de Jong of QVE-WUR. Together we work on quantitative genetic modelling of the transmission of infectious diseases, on the estimation of the genetic effects on transmission and on the design of breeding programs that aim to reduce the prevalence of infectious diseases in livestock populations.