Japanese restaurants and butchers specialising in prized Kobe beef have welcomed the introduction of DNA tests to weed out inferior impostors.To protect the reputations and livelihoods of beef farmers, the Kobe Beef Marketing and Distribution Promotion Association will next month start collecting and storing samples from cattle registered with the organisation. In future, when a Kobe cow is slaughtered the DNA of the meat will be verified against the database and certified as genuine Kobe beef…