If you milked a high yielding cow 3 x a day, she would produce more milk than if her calf suckled her. But mellifera's point I think was more along the lines of the calf having to be seperated from its mum and either eaten, or raised from a bucket. I dont consider either cruel, but we're entitled to differ here.
Not sure what, if much, about sheep rearing is cruel though... no AI, no seperation, very little "pressure" to produce large numbers of offspring as 2 is the norm for a mules and they cant really raise 3....
