A Beef and Lamb New Zealand Farming for Profit field day at Millers Flat last week drew 100 people.
The field day at Grant and Ele Ludemann's 3036ha Onslow View farm focused on the Central Progeny Test (CPT), which aims to help sheep farmers identify the best genetics across sheep breeds.
AbacusBio managing director Neville Jopson said the test evaluated progeny performance under the same conditions.
The CPT provided vital genetic connections that broaden the world's largest across-flock, across-breed genetic evaluation service, SIL-Advanced Central Evaluation.
The test began in 2002 at three sites - Poukawa, in Hawkes Bay, Woodlands, in Southland, and Ashley Dene, in Canterbury.
Last year Ovita established two hill sites - Koromiko, in Wairarapa, and Onslow View, at Millers Flat.
The additional sites meant the performance of animals in an harder environment could be measured, Mr Jopson said.
The original three sites were on lower, easier farmland.
''What you want from your ram breeder is to get the best ram for your environment,'' Onslow View owner Grant Ludemann said. The CPT could compare the genetics being used on the farm with the best genetics in New Zealand.