It would be pointless really... if she's fine on that she'd prob be fine without... but then again a daily muti vin/min supplement is good espesh if she's not on quailty forage...

as long she is not relying on it to keep weight on she should be ok. The only thing about that is she wouldnt get any benefits from her supplements as they are usually to be fed on a daily basis. Is there some one who is going to check on your mare daily during the week.?