Yes, there's definitely a livestock canopy available for that trailer. Your local Ifor dealer should be able to look up a price for you.
However, if you have a bit of time to play with, put a favourites search on Ebay for trailer top, truckman top, truck canopy etc. We picked up a couple of decent canopies this way that we've used as a goose house and a lamb shelter. However, if you can get something at the right size or near enough, it could be made to fit quite easily.