Palatability or Italian Ryegrass for horses

How does Italian Ryegrass compare to Orchardgrass in terms of palatability for horses? I planted some into a weak older alfalfa stand with plans to feed it to my beef cows. Then the monsoon hit and I have plenty of cow hay so looking to put the IRG in little bales for horse hay.



Will horses and owners used to Orchard grass accept the IRG?



Thanks



Palatability or Italian Ryegrass for horses