Since Arthur didn't need to spend time butchering the beast corpses he saved a lot of time.
He could butcher them at the end with multiple corpses. That way it would be a lot more fast and efficient. Plus he would even have a proper equipment like a butchers table and knives which would make it cleaner and better.
Though he also knew that some of the beasts could actually be sold whole as corpses and the merchants would buy them if they were in a decent condition. Some of the beast meats could be sold for a low amount, but when a whole corpse was brought in a decent amount could still be obtained.
The taste of the beast meat varied and not all of them could be consumed by humans, but for most animals it was the same. Beast meat served as good and cheap feed for pigs and other carnivorous that was also very nutritious.
