Journal of the American Veterinary Medical Association · 1976 · 39 citations · 0 references
Veterinary MedicineAnimal SciencesVeterinary EpidemiologyHerd HealthLivestock ProductionRuminant MedicineDairy Herd HealthLivestock HealthLivestock Infectious DiseasesRuminant Herd HealthRuminant Infectious DiseasesRuminant Respiratory DiseasesBovine Viral Diarrhea VirusEpidemiology Of Herd DiseasesFeedlot Respiratory DiseaseFeedlot SystemsLivestock Disease SurveillanceLivestock Viral DiseasesPopulation Mortality PatternsPulmonary Embolic Disease
During all of 1974 we surveyed, for illnesses and deaths, about 407,000 yearling feedlot cattle. The morbidity was 5.1%, with a case mortality of 18.9% and a population mortality of 1.0%. Both morbidity and mortality were higher during fall and winter than during spring and summer. Of the 3,943 dead cattle, 1,988 were necropsied. The most prevalent diseases were: pneumonia, 48%; diphtheria, 6%; brisket disease, 6%; hemorrhagic colitis, 5%; riding injury, 4%; bloat, 3%; calculosis, 2%; endocarditis, 2%; abomasal ulcers, 2%; bovine viral diarrhea, 2%; embolic pulmonary aneurysm, 1%; and pulmonary edema, 1%.