My horse was on bute for almost 3 weeks due to various injuries. (Was also on penicillin for most of that time as well). I know excesive use of bute isn't healthy, but can it cause weight loss? My horse has always been light on condition, but was looking okay before these injuries. Now he is ribby again, and his rump has lost the nice curve to it and is all angular again!
I'm happy to give him the time to recouperate if this is the case, was just after confirmation, or ideas as to what else could be causing it? (He's been off the bute and penicillin for around a week now, and is on Preddy Granules for 4 weeks now).
He gets fed wheaten hay (I feed by weight but it's usually 4-6 biscuits a day depending on size/quality, we worked it out to roughly 13-15kg of hay a day), and one hard feed a day (2 scoops wheaten chaff, one scoop bran, and one scoop of pellets, usually a 'Calm Performer / Cool Horse and Pony' type mix). Also goes out to graze 2-3 times a week.
I hope I can get some answers!