Expert in non digestible oligosaccharides and lactose
Influences on the microbial population of the gastro-intestinal tract of monogastrics (incl humans),

Prof. O’Dohertys’ research programme examines how the various types of non digestible oligosaccharides (NDOs) and lactose sources can influence the microbial population of the gastro-intestinal tract of monogastrics (incl humans), as well as piglet growth; nutrient digestibility, utilisation, and excretion; structure and function of the gut; and enteric diseases such as pathogenic E. coli and beneficial lactobacilli and the immune system. It also examines some the interactions between NDOs, enzymes and bacterial cultures on gastro-intestinal health on all of the above. Cellular and molecular mechanisms of action of prebiotics in the gut and the immune system are also being investigated. Other research interests focus on nutritional strategies to reduce odour, ammonia emissions and the excretion of nitrogen and phosphorus in manure.

REcent publications:

  • P. Reilly, T. Sweeney, K.M. Pierce, J.J. Callan, J.T. O’ Sullivan , and J.V. O’Doherty (2008) The effects of seaweed extract inclusion on gut health and immune status of the weaned pig. Animal, 1465-1473
  • D.A.Gahan, M.B.Lynch, J.J.Callan, J.T. O’ Sullivan  and J.V. O’Doherty (2009) Performance of weanling piglets offered low, medium or high lactose diets supplemented with a seaweed extract from Laminaria spp. Animal, Vol 3, 24-31
  • M.B.Lynch, J. Kranz, J.J.Callan and J.V.O’Doherty (2009) The interaction between  dietary crude protein and fermentable carbohydrate source on post weaning performance, diet digestibility and selected faecal microbial populations and volatile fatty acid concentration Livestock Science 124, 93-100
Where am I?
Luciano Pinotti, University of MilanAshild Krogdahl, NVHIan Givens, Reading UniversityChris Knight, University of CopenhagenVincent Baeten, CRA-WDolores Pérez Marín, University of CordobaStephen Woodgate, Beacon ResearchJoop Luten, NofimaHans Dieter Hess, AgroscopeBart Van Droogenbroeck, ILVOJerzy Juskiewicz, Institute of Animal Reproduction and Food Research Anna Haug, UMBMindaugas Malakauskas, LVAIonelia Taranu, INCDBNARodica Criste, INCDBNAAneliya Haritova, Trakia UniversityKris Sejrsen, Department of Animal Health, Welfare and NutritionRafael Codony, University of BarcelonaFrancesc Guardiola, University of BarcelonaKatri Ling, Institute of Animal Science and Veterinary MedicinePreben Bach Holm, University AarhusDavid Arney, Institute of Animal Science and Veterinary MedicineAna Garrido Varo, University of CordobaJaroslava Ovesna, Institute of Crop ResearchKevin Shingfield, MTT Agrifood ResearchNastasia Belc, Institute of Food BioresourcesRupert Bruckmaier, University of BernJohn Wallace, Rowett Research InstituteCornelia Metges and Harald Hammon, FBNJaap Keijer, WURAila Vanhatalo, University of HelsinkiJovanka Levic, Institute of Food TechnologyDavid Kenny, Institute for Food and HealthIsabelle Oswald, INRAMilan Marounek, Institute of Animal ScienceVeerle Fievez, Ghent UniversityMarcela Speranda, Faculty of Agriculture CroatiaKostas Mountzouris, Agricultural University of AthensIoannis Politis, Agricultural University of AthensMargrit Velik, Institute of Live Stock ResearchBegona de la Roza-Delgado, SERIDAJohn O`Doherty, Institute for Food and Health
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John O'Doherty
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