Prevalence, pathology and isolation studies on phycomycotic gastric ulcer in neonatal piglets.

Rhizopus species was isolated from 8 cases of gastric ulcer in piglets who died 2-5 days after birth. The prevalence of the condition was 0.775% of 1032 live births, and it was the cause of neonatal death in 3.65% of 219 instances. The gross and microscopic pathologies of the lesions are described.