Thanks everyone. My reasons for asking is that my new livery yard fodders it into the field. Since I moved Breeze, her behaviour has been so out of character, she's been spooking, short tempered, and very pushy when I bring her in to ride, groom, or change her rugs. At first I put this down to insecurity, and have been very patient. Plus over the last 3 weeks she's lost quite a bit of weight, there is very little grass, so the haylage has been the lions share of her feed.
I rode on Sunday, and she bucked 4 times, not goodhearted bucks, but resentful, objectionational ones, I surprized myself and her by staying on board and riding her through them - but was very relieved that there wasn't a 5th as they were getting bigger!
Anyway I went and had a word with the livery owner, telling her I thought that the cause was the haylage. She was really nice, and said that because Breeze and her friend were in a separate field, and I go up twice a day, I could fodder hay.
The difference in her today was unbelievable, she led up like a donkey, stood and munched her net, didn't push or barge. I rode her out, she was a little spooky - but she's only 5, and the roads and sites are all new. But she was willing and enjoyed the look out just as much as I did. I have my lovely horse back, I can't tell you all how relieved I am.
So haylage definitely does not suit my horse, wish I'd listened to my instincts 2 weeks ago, and not just put her lousy behaviour down to being moved.
Once again thanks for all your replies.
Lesley