But the breakthrough posed another big question: would the same genetic trait carry on in Daisy's offspring? Milk was taken from the calves - born from eggs taken from Daisy, fertilised and placed in surrogate cows - through induced lactation. They then hormonally induced Daisy to lactate. The resulting milk collected from Daisy had no detectable BLG protein and, unexpectedly, also had more than twice the level of the casein proteins that also normally occur in cow's milk. "From our experience and from what's in the literature, the [calves'] induced lactation is a very good representation of what will happen in natural lactation."

Source: New Zealand Herald January 23, 2017 22:56 UTC