Abstract

Since 1991, ultrasonic pregnancy scanning has developed from a tool used initially to identify dry ewes, into one that accurately identifies ewes carrying singles, twins and triplets. The use of scanning to determine litter size has expanded from stud flocks into a large proportion of commercial flocks. Satisfying the demand for pregnancy scanning has in eight years grown into an industry that employs about 90 scanner operators in the South Island during the peak of the season. Scanning is well established as a vital tool for the monitoring and management of breeding ewes.

RJ, Farmer, and GH Davis

Proceedings of the New Zealand Society of Animal Production, Volume 59, , 91-92, 1999