23 November 2017
Winter Organic Cereals

Diversity in the field - the way forward?

4 December 2017
Managing potato blight for small growers

Innovative Farmers Field lab at Duchy Home Farm



15 November 2017
Organic can feed the world but need changes to food system

Strategies for feeding the world more sustainably with organic agriculture

10 November 2017
Hydroponics and organic farming

UK fears US decision on organic hydroponics post-Brexit



13 November 2017
Agroforestry is the new game-changer for UK agriculture

George Eustice expresses keen commitment to include agroforestry in future domestic Agricultural Policy post Brexit.

Dr. Konstantinos Zaralis

Job title

Principal Livestock Researcher

Contact details

Email prefix: kostas.z (add suffix @organicresearchcentre.com)
Phone: +44 (0)1488 658298 - extn. 512
Fax: +44 (0)1488 658 50
Postal address: Elm Farm, Hamstead Marshall, Newbury, Berkshire, RG20 0HR

Academic qualifications

Ph.D: Interactive effects between genotype, nutrition and immune status on the parasite-induced anorexia of sheep, University of Edinburgh.
M.Sc in Animal Production and Nutrition, University of Aberdeen. Thesis: “Effects of plant secondary metabolites on the ability of sheep to respond in gastrointestinal nematode infections”
B.Sc in Animal Production, Technological Educational Institute of Thessaloniki.

Main roles and responsibilities

Konstantinos is a senior researcher in animal production with expertise in the area of ruminant nutrition including intake regulation, feeding behaviour and diet selection, animal husbandry, welfare and sustainable approaches to control disease in farm animals in conventional, low-input or organic livestock systems. Along with his research activities he leads or participates in project concepts and funding bits of internationally competitive research and participates in research discussion groups and consortia.

Current Projects

  • Managing the iSAGE project on Innovation for Sustainable Sheep and Goat Production in Europe and leading ORC’s contribution – (Funded by H2020)
  • Co-investigator in the Optimal Grazing Strategy for Dairy Cows (OptGraze) project – (Funded by The Norwegian Research Council)
  • Contributing to Agroforestry programme (AGFORWARD) and other agroecological research – (Funded by FP7)
  • Contributing to Innovative Farmers programme – (Funded by The Prince of Wales’s Charitable Foundation)
  • Leading livestock related research

Completed Projects

  • Leading ORC’s contribution in the Sustainable Organic and Low Input Dairying (SOLID) project and several tasks – (Funded by FP7)
  • Working within the Improved contribution of local feed to support 100% organic feed supply to pigs and poultry (ICOPP). – Funded by CORE Organic 2.
  • Contributing to Duchy Originals Future Farming Programme (DOFF) – (Funded by The Prince of Wales’s Charitable Foundation)

Research interests

  • Interactions between genotype and nutrition on host ability to cope with disease
  • Food intake regulation, feeding behaviour and diet selection in animal species
  • Nutritional and environmental factors that affect animal welfare and productivity
  • Sustainable approaches to control disease in farm animals
  • Modelling nutrient efficiency of different breeds of livestock
  • External activities

    Member of;
  • The Nutrition Society (NS)
  • British Society of Animal Science (BSAS)
  • Nordic Association of Agricultural Scientists (NJF)
  • The Hellenic Society of Animal Production (HSAP)
  • Member of the COST action FA0805 (2009 – 2012)

    Selected publications

    Padel, S., Mette, V., and Zaralis, K., (2015) Supporting Innovation in Organic Agriculture: A European Perspective Using Experience from the SOLID Project. Sustainable Agriculture Research, 4 (3), pp. 32-41.

    Clements, R.C., Higham, L.E., Smith, J., Gerrard, C.L., Colley, M.C., Zaralis, K., Nelder, R., Pearce, B., Rayner, A. and Bright, A. (2015) Exploring the Feasibility of Using Silage-Based Feed with Alternative Sources of Protein in Organic Pig Rations. Organic Farming, Vol 1, Issue 1, Pages 50–56, DOI: 10.12924/of2015.01010050

    Zaralis, K., Nørgaard, P., Helander, C., Murphy, M., Weisbjerg, M.R., Nadeau, E. (2014) Effects of maize maturity at harvest and proportion of maize silage in diets on intake and performance of growing/finishing bulls. Livestock Science (volume and pages are pending)

    Zaralis, K., Tolkamp, B.J., Houdijk, J.G.M., Wylie, A.R.G., Kyriazakis, I. (2009) Consequences of protein supplementation for anorexia, expression of immunity and plasma leptin concentrations in parasitized ewes of two breeds. British Journal of Nutrition, 101, 499 – 509

    Zaralis, K., Tolkamp, B.J., Houdijk, J.G.M., Wylie, A.R.G., Kyriazakis, I. (2008) Changes in food intake and circulating leptin due to gastrointestinal parasitism in lambs of two breeds. Journal of Animal Science, 86, 1891–1903

    Tsega, W., Tamir, B., Abebe, G., Zaralis, K. (2014) Characteristics of Urban and Peri-Urban Sheep Production Systems and Economic Contribution in Highlands of Ethiopia. Iranian Journal of Applied Animal Science, (volume and pages are pending)

    Nadeau, E., Svensson, E., Zaralis, K., Helander, C., Pauly, T., Arnesson, A., (2011) Effects of additive on aerobic stability and nutritive value of maize silage stored during different time periods when harvested at advancing maturity stages. Advances in Animal Biosciences, Cambridge University Press. Proceedings of the 8th International Symposium on the Nutrition of Herbivores (ISNH8), Vol 2, part 2, p 393

    Tolkamp, B., Wall, E., Roehe, R., Newbold, J., Zaralis., K. (2010) Review of nutrient efficiency in different breeds of farm livestock, Department for Environment, Food and Rural Affairs, UK (Project Number IF0183)