Yes, and that's the problem with slavery of humans, too. It treats humans the way humanity treats animals. And nobody should be made to endure that kind of suffering.
What makes animals unworthy of decency? Intelligence? Strength? Divine birthright of species? All distinctions drawn between human and animal which aim to excuse slavery are fascist in nature. Singer is right. The only excuses we have for eating meat are the same excuses the Nazis used for the holocaust. Humanity has not grown since 1945. They have not abandoned slavery, nor fascism. As Singer says, every meat eater is a Nazi.
Even the little Hitler Youths in schools being fed meatloaf. What society does to children to indoctrinate them into slave-eating is disgusting. Put blood on their hands, so that without an iron will, they will never be able to accept the truth of what they have done, lest they be overcome with guilt for their crimes. It reminds me of the indoctrination rituals used by criminal gangs, where you have to commit a crime to be accepted. It's no wonder all these adult Nazis can't accept that slavery is wrong.