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Anaemia and low viability in piglets infected with Eperythrozoon suis
  1. J. P. Henderson, BSc, BVM&S, MRCVS1,
  2. J. O'Hagan, FIMLS, MIBiol1,
  3. S. M. Hawe, BAgr, PhD2 and
  4. M. C. H. Pratt, MVB, MRCVS3,1
  1. 1 Veterinary Sciences Division, Department of Agriculture for Northern Ireland, 43 Beltany Road, Coneywarren, Omagh, County Tyrone, Northern Ireland BT78 5NF
  2. 2 Department of Agriculture for Northern Ireland, Loughry College of Agriculture and Food Technology, Cookstown, County Tyrone, Northern Ireland BT80 9AA
  3. 3 Erne Veterinary Group, Church Road, Lisnaskea, County Fermanagh, Northern Ireland BT92 OGN


Eperythrozoon suis infection was identified in a pig herd during an investigation into anaemia and low viability in newborn piglets and severe regenerative macrocytic anaemia in older piglets. The organisms were identified in the erythrocytes of piglets a few days old. Extensive investigations failed to detect other causes of the anaemia and low viability. There was no response to parenteral iron administration alone but the piglets' viability and anaemia responded to the administration of tetracyclines. This is the first report of E suis infection in Northern Ireland.

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  • Mr Pratt's present address is Carson and Kealey MsRCVS, 43 Main Street, Castlederg, County Tyrone, Northem Ireland BT8 1 7AS

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