I hate to add another potential concern into the mix, but here it goes. In some areas of New York state there is a lot of elk wasting disease in the deer population. This is a prion disease, aka "mad cow" disease. Mostly it is transmitted by consumption of central nervous system tissue (brain and spinal cord), not though peripheral tissues like antlers or muscle, but nonetheless in NYS deer from the affected areas are not to be consumed at all. I think I would want to know that antlers I gave my dogs came from an area that I knew to be unaffected. Since I wouldn't know where they came from if I bought them in a store I've never given them much more than a glance.
Lily AKC: CGC CD HIT CDX RN RA RE RAE NAJ; APDT: RL-1; CPE: CL1-R, CL1-H
Peeves AKC: CGC BN