  Males of egg-laying chicken breeds are of little value to producers because only a few roosters are required for reproduction. A day after they're hatched, chicks' sex is determined, with unfortunate males heading to the grinder for use as animal feed. David Paul Morris / HSUS  Males of egg-laying chicken breeds are of little value to producers because only a few roosters are required for reproduction. A day after they're hatched, chicks' sex is determined, with unfortunate males heading to the grinder for use as animal feed. David Paul Morris / HSUS  