Images of Cambodian pigs with extremely muscular physiques have gone viral in recent weeks, raising concerns and questions over the origin and well-being of these augmented animals.

PETA revealed that a farm in Cambodia breeds super-muscular pigs. What are the potential problems associated with producing these large and genetically altered animals to produce more meat?

Mark Brubaker, an applied geneticist, works through a PowerPoint presentation that rates the farm’s pigs with statistical precision—feed-conversion ratio, estimated breeding value, terminal ...