Final answer:
Campylobacterosis is not a common cause of respiratory disease in livestock calves; rather, it is associated with gastrointestinal illness caused by the bacterium Campylobacter jejuni. A. true.
Step-by-step explanation:
The statement that campylobacterosis is a common cause of respiratory disease in livestock calves is false. Campylobacterosis, specifically Campylobacter jejuni gastroenteritis, is a form of campylobacteriosis that is primarily a gastrointestinal disease rather than a respiratory illness. It is a widespread illness caused by the bacterium Campylobacter jejuni.
This pathogen is often transmitted through contaminated poultry, unpasteurized milk, or water, leading to symptoms such as fever, diarrhea, cramps, and vomiting. While certain bacteria are responsible for respiratory diseases in livestock and humans, such as Bordetella pertussis (whooping cough) or Mycoplasma pneumoniae (mycoplasma pneumonia), Campylobacter jejuni is not typically associated with respiratory illness.