BBC Radio 4 - Farming Today, TB-Resistant Cows 4Mar15

Scientists in China have produced a herd of genetically engineered cows that are better able to ward off bovine TB infection. This development is still very much in its early days, but the resistance has been successfully passed on to the offspring of the transgenic cows. We hear from Professor Mike Coffey of Scotland's Rural College who specialises in dairy cattle breeding, and is researching how to breed naturally for reduced susceptibility to TB.

http://www.theguardian.com/science/2015/mar/02/mouse-gene-could-help-produce-tb-resistant-cattle-study-shows