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Abstract
Extract
The stomach worm, Hyostrongylus rubidus, causes serious losses in pigs in certain areas of New Zealand. Dodd (Citation1960) reports that hyostrongylosis is essentially an ulcerative gastritis with anaemia. In young pigs, the clinical signs are unthriftiness, retarded growth rate, and diarrhoea. Adult breeding sows may die suddenly as a result of haemorrhage from one or more deep ulcers in the gastric mucosa. Other deaths follow perforation of the stomach wall and a subsequent peritonitis.