Global demand for animal-derived foods such as meat, eggs, and milk is increasing, even as arable land and water to support animal production are declining worldwide. Among the approaches to meet global demand in a resource-constrained future is the genetic improvement of livestock to increase the efficiency and sustainability of animal agriculture. Food-animal breeders are beginning to leverage advances in the fields of genomics and biotechnology to make targeted changes in DNA, called heritable genetic modifications (HGMs), that can be passed onto subsequent generations, thereby significantly accelerating the process of genetic improvement in populations of food animals.
