looks like we need to increase the hay. Thankyou.
I think increasing your hay is about all you need to do.
Just FYI, because I don't know if you have seen my past posts on this. Depending on what you have to pay for your hay, and it's quality, there is an alternative, that IMO, takes all the guess work out of getting the hay/grain ratio correct.
I feed complete pellets. Horse Chow 100 by Purina. I feed NO hay. the hay/roughage that is so important to the horses digestive system is in the pellets at the correct ratio of gain to hay.
You feed according to weight and usage of horse to weight of grain.
IOW's, for instance for a normal usage 1000 lb horse gets 1 1/2 lbs of feed per 100 lb. of horse. So that would be 15 lbs. a day. You can/should divide this up into at least 2 feedings a day, 7 1/2 each time, but dividing it into 3 feedings is even better. That is what I do. When I had a lactating mare I did increase her feed to 2 lbs per 100 lbs of body weight, and the foal got the amount she needed in a foal feeder, and her amount was increased always to include the NEXT 100 lbs of weight she was GOING to gain as she grew. She didn't necessarily eat it all, all the time, but it was there.
A 3 lb coffe can of these pellets weigh 4 lbs. All my horses are average size so they all get 1 1/4 cans 3 X's a day.
I buy the stuff weekly, so it is always fresh, I don't have to haul/store hay, and for us here, the price is about the same if I bought hay and grain.
Just something you might want to think about. I've feed my horses now for about 10 years this way, and have had no problems.
Becky