Alfalfa in the Hay?

Hi Dr Dan,  Have two mares, appaloosas/thoroughbred 13 and 14 years old , Boots and Sister, whom I  moved to a new barn 3 weeks ago. They are feeding a hay with alfalfa in it. The horses who Ive owned for 7 years now, seem unusually full of energy. They are fed 2 cups of oats am & pm. Can the alfalfa in the hay, Im told it is minimal,??? make them hard to handle and speedy. Thanks and sorry to bother you but im having some difficulty. 

Yes it can.  Also, make sure they are getting the other proper nutients.
Consider listening to the What To Feed Your Horse online audio.

It will explain the supplements needed to make oats complete.
Thanks for asking Dotty!