Great subject! I wish it was lighter (consider bumping the gamma up and you could have fixed it) Awesome background, you really know what makes an interesting photograph... Great job.
Getting down just a little bit lower to exclude the branch at URC would have strengthened the picture. Great color on the cow. A little fill flash or reflector to cut the shadows (or, in post-processing, some + gamma) would help to reveal shadow detail lost shooting into the light.
A very attractive one, too. Where does it get its hair done? I like that colour :-) The shot could do with a little more light on the front of the cow.
Now that's a nice looking speciman of fauna! Looks a bit dangerous to me and he's looking at you in a not so nice way :-) It's a pity the lighting wasn't optimal for you or else this would have been amazingly good. I mean it is good now, but the dark part at the front isn't so enhancing.