This has been a focus for me and and have done a lot but am not 100% there.
I am there with my small
cattle herd. Even to the point of changing slaughterhouses. The previous one had an alley. Pigs, sheep, and cows in line. Maybe waiting hours for their turn. The new place takes 2 cows a day. No other animals. Before i walked to the counter to give my specs the deed was done with very little stress.
Sheep i am almost there but more paddocks are needed. They seems happy. Harvest is done onsite. No transport stress.
Chickens are now 100% free range during the day. An automatic door opens and closes it.
Turkeys are not happy. Current
plans is to double the size of their run (from 12' x 40' to 24' x 40') and have 2 of these so they can always have plants on the ground. I have 5 turkeys but try to breed them. All offspring will be harvested. Turkeys are not chickens. They'd rather fly up into a tree than come back to a protected coop.
Deer. This seems like the top bar of eating "happy meat". No caging. No stressfull transport, etc. They are happy and they are down. If meat is in your diet, this seems (to me) like the most viable method to prevent cruelty yet many people take the opposite view.
Fish. In this area we have gradually changed our methods. With one bait i can go out and catch 50 undersized and maybe 0 to 3( limit is 3) of keepers. Another bait i can catch 5 undersized and 0 to 3 keepers. I am tuning in to the fact that x% of undersized will die from the catch. We switched to circle hooks years ago which dramatically reduced the gut hooks. We also learning iki jibe (sp?). A Japanese method of killing the fish quickly. Bringing home fish is becoming greater importance than the entertainment of catching 50 fish.
I think i am at 3 years of not buying any meats from stores with the exception of experiments. Like 3months before our first cows went to slaughter i bought a brisket to make corned
beef to test the viability of that for our future needs.