Found this on Science Daily:
AUCKLAND, New Zealand, May 27 (UPI) -- Scientists in New Zealand have successfully bred a cow that produces skim milk and the firm behind the process said herds of the animals are on the horizon.
Of course it has to be the saturated fats, next we will have low fat cows...
"She produces a normal level of protein in her milk but substantially less fat, and the fat she does produce has much more unsaturated fat," Snell said. "She also produces milk with very high levels of omega3 oils."