If you really want to cheese the 7dtd harvesting mechanic, you could go and whittle down the corpse with the worst quality knife you can find except for the last hit, which you do with a 600. But meat isn't the issue and I usually try and stay away from methods like that, because it's not intended and no fun neither for the developers nor for you. Actually, I boxed all my animals because of last patch, except for chickens, because I don't want to accidentally get them hurt. I rarely slaughtered them anyway, only in case of one of these butcher quests or weapon quests. I used them mainly as decoration and something living nearby. I stopped taking out chickens out of my coops as well. I just feel to bad killing them, if I can have as tasty snow abominations and hyenas, lol.
Now, what I actually came here for: how do I access the inventory of my survivors that already work at a station and how do I figure out, if they are well or not?