Holly, this question about protein is best addressed by Dr. Kellon or one of the balancers here since in your case, you are feeding a pony that is also working. Depending on how much work she is actually doing, she may need some additional protein . Dr. Kellon has written about working, event horses needing a higher amount of protein in the diet. 


  https://drkhorsesense.wordpress.com/2017/08/13/protein-for-the-active-horse/

--
Dawn Wagstaff and Tipperary   

Saline, MI  2003

Tipperary Case History

Juniper Case history: https://ecir.groups.io/g/CaseHistory/files/Dawn%20and%20Juniper/Case%20history%20Juniper.pdf .