Which methods of feeding barley to horses are permitted?

The correct choice indicates that barley can be fed to horses in several forms, including rolled, crushed, crimped, or flaked. Each of these methods of processing barley serves specific purposes that enhance digestibility and nutrient absorption.

Feeding barley in a rolled form increases the surface area and makes it more palatable while allowing for easier chewing, which aids in digestion. Crushing barley also breaks it down, helping the horse digest it more effectively. Crimping is another method that involves pressing the barley grains, improving their digestibility even further and making it easier for the horse to break down the grains during chewing and digestion. Flaking is a similar technique, where grains are steamed and then flattened; this process enhances both digestibility and palatability.

Different processing methods can have a significant impact on how well the horse utilizes the nutrients in the barley, making the various options suitable for feeding. Barley provides carbohydrates and energy essential for horses, and how it's processed can influence the horse's overall health and performance.

In contrast, the other options limit the forms in which barley can be fed. For example, only crimped or rolled forms do not provide the flexibility needed to effectively cater to diverse equine dietary needs and preferences.