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Sensor Products This mutation, in the gene for a protein called myostatin, is found naturally in Belgian Blue cattle. The Belgian-Blue mutation disrupts myostatin’s structure, and thus function. Two years ago, in collaboration with researchers at Texas A&M University, Dr Fahrenkrug edited the myostatin gene of a member of another breed of cattle to do likewise. Bruce Whitelaw at the Roslin Institute, in Scotland, has similarly edited resistance to African swine fever into pigs, by altering a gene that helps regulate immune responses to this illness to make it resemble the version found in warthogs. These wild African pigs have co-evolved with the virus and are thus less susceptible to it than are non-African domesticated animals. Randall Prather at the University of Missouri has similarly created pigs that cannot catch porcine reproductive and respiratory syndrome, an illness that costs American farmers alone more than $600m a year. We've got you covered with our resources ...