One has to take care with animal slaughter and general husbandry. Yes we are hypocrites - me especially - in that we can tear weeds from the earth with wanton cruelty to prepare space for the plants that we like, but plants don't cry out in pain or cower in corners. Though of course there are those sensitive enough to argue otherwise, and other cultures have seen and experienced things that modern culture rarely glimpses.
But animal care has an immediate effect on observers of various sensitivities. It is easy enough to recognize when an animal is uncomfortable or in pain, and one's methods of animal care determines the extent of these things.
One has to project one's moral sensibility onto the care itself, as much as necessity allows anyway, otherwise the flow of effects reverses. One becomes hardened to the sounds of pain and fear - of animals anyway, which can be compartmentalized more or less - which may cause a creeping coarsening effect that is difficult to reverse.
