We slaughtered chickens for meat for the first time this past weekend, and it went OK enough that we don't feel too bad, but there's definitely a learning curve for us to do better with the last 4 roosters next weekend.
Our intention was to slaughter them last October at 3 months of age, using the processing unit for rent from our local county Agricultural Extension, but that fell through when we got the unit home and it was damaged. So we decided to do it the old-fashioned way, bought a giant 8-gallon pot, cut up feed bags to use instead of cones, and sharpened some knives.
The first rooster we did we felt bad - the cleaver we used was not sharp enough and it took a few chops to kill the poor guy. So for our second rooster, the idea was to grab my super sharp Green River kitchen knife, one of us hold it over his neck and the other slam it with a hammer. This worked great, the rooster was dispatched immediately and humanely. The feed bags worked as good as cones, we hung them using coat hangers until they bled out. In the meantime, the 8-gallon pot of water had got to 150 degrees, we dipped the roosters several times until the feathers were easy to remove, and the plucking turned out to be the easiest part of the whole process. The gutting was tricky, fitting our hands in while being careful to not perforate the intestinal tract while pulling it out, took some careful finesse, but we got it done and those two birds wrapped and put on ice.
The next rooster we decided to do like the second which went humanely, but this time, slamming the knife with a hammer dispatched the rooster quickly and humanely, but the knife broke, flipped around, and the broken end took a chunk out of my finger, which bled as much as the poor rooster. For the last rooster, I took the original cleaver, sharpened it as good as I could, and the hammer-slamming method was quick and humane.
To do more quickly and humanely next time, we ordered a sharp hatchet with more weight, so one chop can dispatch the rooster. Also, a better knife to do the gutting more neatly and avoid the intestinal tract.
Hopefully we've learned enough to be able to dispatch them as humanely as possible next time, as well as to butcher them so we end up with safe and healthy meat.