Experimental concurrent infection of cattle with Ostertagia ostertagi and Salmonella dublin.
Six seven-month-old Friesian steers were given 8.1 X 10(9) Salmonella dublin orally. Four had been infected with third stage larvae of Ostertagia ostertagi on four occasions over the previous three months. All became pyrexic and excreted S dublin in the faeces for eight to 15 days. Intravenous injection of 8.7 X 10(8) S dublin six weeks later produced similarly mild effects in parasitised and control animals alike. Two parasitised animals stopped excreting S dublin after three and five weeks respectively; the other four were still excreting regularly when killed eight weeks after intravenous infection. S dublin was recovered from the carcases of all six. O ostertagi, unlike Fasciola hepatica, did not increase susceptibility to S dublin or predispose to prolonged infection.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000097:blood / Q000382:microbiology*; D004198:Disease Susceptibility; D005243:Feces / Q000382:microbiology; D008297:Male; D010029:Ostertagiasis / Q000097:blood / Q000382:microbiology / Q000662:veterinary*; D010435:Pepsinogens / Q000097:blood; D012475:Salmonella / Q000302:isolation & purification; D012481:Salmonella Infections, Animal / Q000097:blood / Q000382:microbiology*; D014252:Trichostrongyloidiasis / Q000662:veterinary*
D010435:Pepsinogens