Hey there! Thanks for supporting the game and giving feedback. It means a lot. :)
I 100% agree with you. I've got plans to automate butchering with room job queues. However, that will be in the update after the one I'm finishing up. Also, I've added a new diet system to this next update which should improve animal care quite a bit because you'll be able to specify diets for each race.
It's a slow development, but I'm hoping to fix up things like this as we go. Thanks again for the feedback!