Hay is commonly fed to horses and is usually the largest and most expensive dietary component for adult horses. Hay waste can occur during both storage and feeding, and can add up to ≥ 40%, depending on forage type, storage method, environment, and storage length. Horses are commonly fed large roundbales and small squarebales in outdoor paddocks; however, no research exists to characterize hay waste. The objectives were to determine hay waste and economics of small squarebale and large roundbale feeders when used in outdoor feeding of adult horses.
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