An abdominal approach for producing permanent omasal fistulae in the ox and sheep.
D000009:Abdominal Muscles / Q000601:surgery; D000818:Animals; D002417:Cattle / Q000502:physiology*; D005747:Gastric Fistula; D008297:Male; D008722:Methods; D009851:Omasum / Q000502:physiology* / Q000601:surgery; D012756:Sheep / Q000502:physiology*