I can't remember make and model but I prefer a hunting/skinning knife with replaceable blades. I don't want to stop and sharpen a knife in the middle of butchering. If you want to sharpen those blades later and reuse them you can. Some people are not comfortable sharpening at all.
I also have a pair of poultry shears I use on certain cuts to keep the knife sharp. I part mine as I butcher so I use the poultry shears to take the feet off, cut the neck, remove wings, remove breasts, any place that I could cut bone or cartilage and dull a knife.