Hoof and mouth disease is a disease that is spread by physical contact, contamination of equipment used on the animals with this disease, and even by wind, so farms that may seem like they are a safe distance away from another farm that has been found to have animals with this disease have a risk of getting it as well.
Stress, exposure to other sick cattle by air or touch, bacteria entering a wound, feed contamination, mineral deficiency, mineral toxicity, genetics, anti-quality factors in forages, etc.
Depends on what diseases the cattle had and whether they were transmissible to humans or not.
H. G. Belschner has written: 'Horse diseases' -- subject(s): Horses, Diseases 'Cattle diseases' -- subject(s): Diseases, Cattle
Neelesh Sharma has written: 'Production diseases of dairy animals' -- subject(s): Dairy cattle, Cattle, Metabolism, Parturition, Diseases
J. M. Payne has written: 'Metabolic and nutritional diseases of cattle' -- subject(s): Cattle, Diseases, Metabolism, Nutrition
Because they had diseases.
Cattle may carry the organisms that cause anthrax, European tick-borne encephalitis, rabies, tapeworm, Salmonella infections and many bacterial and viral diseases.
Leonard Pearson has written: 'The effect of tuberculosis vaccination upon cattle infected with tuberculosis' -- subject(s): Tuberculosis in cattle 'Diseases and enemies of poultry' -- subject(s): Poultry, Diseases, Birds, Poultry Diseases, Mammals
Respiratory diseases such as BRD (Bovine Respiratory Disease which covers shipping fever and pneumonia) is the most common disease that cattle die from. Digestive diseases come in second.
bacterial diseases
Neospora caninum which causes abortion also hydatids
C. S. Hobbs has written: 'Fluorosis in beef cattle' -- subject(s): Diseases, Cattle
John Hanley has written: 'Bibby's book on milk' -- subject(s): Cattle, Diseases, Tuberculosis in cattle