Jay Olyniuk operates a research dairy herd for the veterinary school in Saskatoon, Saskatchewan. They currently milk 110 cows using a variety of different systems including a parlour, robotic milkers, and a tie-stall. He houses his calves in a separate calf barn where they are individually housed until weaning. Jay always maintained a closed herd and had not purchased any animals in many years, however, despite this practice they were still hit with Salmonella Dublin (S. Dublin).