Reduced feed intake is often the first clinical sign to be noted. Other signs include decreased milk yield, lethargy and an “empty” appearing abdomen. [[The Rumen - Anatomy & Physiology|Rumen]] motility is variable, but often hypoactive following reduced feed intake. | Reduced feed intake is often the first clinical sign to be noted. Other signs include decreased milk yield, lethargy and an “empty” appearing abdomen. [[The Rumen - Anatomy & Physiology|Rumen]] motility is variable, but often hypoactive following reduced feed intake. |