Steamed hay and alfalfa pellets for the management of severe equine asthma.

Background: Steaming hay significantly reduces respirable particles and provides a palatable alternative to dry hay for horses with asthma, but there are few prospective studies demonstrating the clinical efficacy of steamed hay.

Objectives: To compare the efficacy of alfalfa pellets and steamed hay in improving lung function and inflammation of horses with severe asthma (SEA).

Study Design: Controlled crossover study.