Gastritis, Chronic

• Chronic gastritis is usually proliferative rather any other type of gastric inflammation.
• Usually a parasitic cause.
• Occurs mostly in the pig and in cattle.

• Pig
  • Redworms (Hyostrongylus)
  • Seen mostly in sows, and are present in up to 30% of pig herds.
  • Small numbers produce little pathology, but large numbers cause thin sow syndrome.
    • Animals eat well but slowly lose condition.

• Cattle
  • Ostertagiasis produces a condition similar to thin sow syndrome.