"Any information or suspicions, no matter how minor they think it is, would be welcome. If anyone noticed any strange sheep trucks or 4WDs they think don't belong, let me know," he said.
The theft was discovered when the ewes were brought in for shearing. After coming up short, a search was made by helicopter, but the missing sheep were not found.
The wool alone was worth an estimated $17,000, which, along with the ewes and unborn lambs, took the total worth of the missing sheep to about $40,000, he said.
The Omarama theft follows a report to Cromwell police in August of about 160 merino wethers, estimated to be worth about $13,000, being taken from Carrick Station.