I have a similar issue that I am in negotiations with. You can read on the blog "how do we place value on our deer?" under the Antlers Bar and Lounge.
What I ended up asking for is not only the value of the buck iteslf, but the value of the semen that I would be losing from future draws. Also the lost revenue from the fawns sired by these bucks.
I have used my arguement on the concept that our deers' antlers is what proves the value of their existence. The bigger and better the antlers are, the more valued the deer are. The more value the deer have, the more value to their semen and fawns.
If an animal has antler damage, he definitely has a tainted, reduced value. Therefore reducing the value, if not eliminating the value, of the resulting fawns and semen. I also asked for feed, housing and medical treatment for these animals, since I had to keep them longer than I expected. My injured deer were sold for this past fall. Since the damage resulted the potential buyers backed out of the deal. I don't blame them, but I feel that I should be compensated for the lost revenue. I am still in negotiations with my issue. I was on the phone for an hour and a half the other day with the insurance companies attorney. I feel that things are going my way, but they have yet to make an offer. My incident happened in August, so expect things to take a while to be satisfied.
My advice is to include anything and everything you can think of and prove. DO NOT be considerate and feel that you are asking too much. Insurance companies will only offer you a percentage of what you ask for anyways. If you would like to talk more about this I would gladly give you all the information that I have. 304-288-4090