Any possible issues with Brussels sprouts?

My buns seem to love Brussels sprouts. I give them each a small one or half a large one. I find they get a lot of sediment in their pee from kale and collard greens and I think they are prone to getting gassy from romaine, so I am wondering if I should be watching for any problems with the Brussels sprouts.

These should be no more than about 15 % of the diet (About 1 tablespoon per 2 lbs of body weight per day).

I do not feed cruciferous vegetables at all. http://en.wikipedia.org/wiki/Cruciferous_vegetables They cause too much gas and can lead to bloat and upset intestines. The other vegetables you mentioned aren't that great either. Try things like cilantro, parsley, bell peppers, swiss chard, squashes including pumpkin.... small amounts of root vegetables like radishes and carrots. As an occasional treat you can keep a bag of cranberries in the door of the fridge and feed just 1. It's a low sugar fruit and lasts forever in the fridge before they start to get mushy.