[dragonwriter]

> Where animals have been domesticated and trained to do economically productive tasks, we've stopped the practice under the guise of preventing animal cruelty.

Mostly, we've stopped the practice by replacing it by more efficient, non-animal technology. There's probably a few cases where animal cruelty laws put the final nail in the coffin of practices that were rendered marginal by technological progress, but animal cruelty laws certainly are not the principal means by which use of animals as productive capital has been eliminated. It was tractors, not animal cruelty laws, that mostly stopped animals from being the used to plow fields, etc.