How do you know when a cow has Ketosis?

Dairy cows are the most typical and common cows that will get ketosis. Symptoms include loss of appetite, decreased milk production, weight loss, acetone (stinky) breath, nervousness, mucus-covered hard feces, and even will become downers. In confined operations, the best signs are cows that have a reduced appetite and seem to go more for the fodder than the grain in their rations.