An Ashburton farm owner is absolutely floored and sickened by the disappearance of three dozen dairy cows from her farm.
Staff noticed their absence after milk production became abnormally low.
The milking shed tracking system showed the herd disappeared between Monday and Wednesday last week.
Farm Owner Jill Quigley believes the cows were taken on two separate occasions, with around nineteen stolen the first time, before thieves returned to take the rest.
Mrs Quigley has tried ringing every transport operator in case they know something, but has had no luck. She said with no sign of the cows having been walked off the farm either, their removal remains a complete mystery.