University of Zagreb, Faculty of Agriculture

Assist. Prof. Marija Duvnjak, PhD

Assist. Prof. Marija Duvnjak, PhD

Department of Animal Nutrition
Office location: 2nd pavilion, ground floor left
phone: +385 1 239 4016
e-mail: mduvnjak ( at )
Languages: croatian, english
Consultations: According to a prior appointment via email

Academic qualifications

  • 2011 - 2016: PhD, Postgraduate Studies Agricultural Sciences
    Influence of corn hybrids and type of silage additives on total and gamma zein content during the high moisture corn silage production
  • - 2012: MSc, Biochemical Engineering
    Prediction of adenilation domains substrate specificity
  • - 2009: MSc, Biochemical-Microbiology
    Synthesis of n-ethylmorpholine quaternary salts

Employment and work experience

  • 2020 - : University of Zagreb Faculty of Agriculture
    Assistant Professor
  • 2016 - 2020: University of Zagreb Faculty of Agriculture
    Postdoctoral Researcher
  • 2010 - 2016: University of Zagreb Faculty of Agriculture


Research interests

  • Animal feeds − physical-chemical traits of feeds
  • Bioprocess kinetics
  • Proteomics
  • Microbiology – applied microbiology

Training and research experience

  • 31. 01. 2013. - 30. 06. 2013.: Scotland's Rural University College (mixed)



Title Funding Status
Sadržaj i antioksidacijska aktivnost fenolnih kiselina antocijanina zrna žutog kukuruza Sveučilište u Zagrebu in progress
Fenotipska svojstva, masnokiselinski sastav i senzorna kvaliteta mesa i jaja kokoši hrvatice Sveučilište u Zagrebu finished
Utjecaj mikotoksina na sadržaj fenola i karotenoida u zrnu kukuruza Sveučilište u Zagrebu finished


  • Duvnjak, M., Kljak, K. and Grbeša, D. (2019) Response of common silage corn hybrids to inoculant application: fermentation profile, carbohydrate fractions, and digestibility during ensiling. Animal production science. 59, 1696-1704
  • Duvnjak, M., Bošnjak, A., Zadravec, M., Pintar, J., Grbeša, D., Kiš, G. (2018) Starch in horse diet improves feces microbiota, in vitro digestibility of fiber and dry matter. Journal of central european agriculture. 19 (4), 918-930
  • Kljak, K., Duvnjak, M., Grbeša, D. (2018) Contribution of zein content and starch characteristics to vitreousness of commercial maize hybrids. Journal of cereal science. 80, 57-62
  • Nišavić M., Hozić A., Hameršak Z., Radić M., Butorac A., Duvnjak, M., Cindrić, M. (2017) High-Efficiency Microflow and Nanoflow Negative Electrospray Ionization of Peptides Induced by Gas-Phase Proton Transfer Reactions. Analytical chemistry. 89, 4847-4854
  • Duvnjak M., Kljak K., Grbeša, D. (2016) Effect of Hybrid, Inoculant and Storage Time on Whole Plant Nitrogen Compounds and Grain Total Zein Content in Maize Silage. Journal of animal and feed sciences. 25, 174-178

Bibliography (CROSBI):

Other professional activities

  • 2014: Croatian Microbiological Society
  • 2010: Croatian Standards Institute
    Member of Technical Standards Subcommittee HZN/TO34/ PO 17 Agricultural and food products; Management systems for food safety
  • 2010: Croatian Standards Institute
    Member of Technical Standards Subcommittee HZN/TO569, Animal feed