Developments in biotechnology have raised new concerns about animal welfare, as farm animals now have their genomes modified (genetically engineered) or copied (cloned) to propagate certain traits useful to agribusiness, such as meat yield or feed conversion. These animals suffer from unusually high rates of birth defects, disabilities, and premature death.
The Humane Society of the United States, "Welfare Issues with Genetic Engineering and Cloning of Farm Animals" (2006). IMPACTS ON FARM ANIMALS. 21.