Depends on the Region and Species.
Tibetan Bigfoots are generally leaner, due to the cold and tough climate. You would get even tougher jerky than usual from these, due to how tough their lives are. You would get about 20-25 lbs.
SouthWestern North American Bigfoots are generally bigger and brawnier, due to the mountains and heavy foliage of there terrain. Once dried and prepared, you might get 30-45 lbs.
NorthEastern North American Bigfoots are by far the tallest and grissliest of all the Bigfoots. They have a lush terrain with low mountains, but the need to be big and mean to fend off the pesky bears of the Appalachains. From these, I garuntee you about 75 lbs. of perfectly chewy jerky for your friends and family to enjoy over the holidays. =)
I am the current president of the B. H. A. N. A. (Bigfoot Hunting Assoctiation of North America) and currently hold 17 different hunting liscenses to hunt every type of Bigfoot known. Just sayin'.