The use of DNA parentage testing of progeny from multiple sire mating groups significantly improves the accuracy of breeding values associated with their bloodlines.
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A genomic validation trial conducted by Australian Wool Innovation, Sally Martin Consulting, Moses & Son, and Bluechip Livestock used Sheep CRC DNA tests to identify parentage of the progeny of 300 ewes that had been joined in a syndicate mating program.
The trial found huge variation in the number of progeny per sire, with it ranging from four up to 30 per cent and the dominant ram varying from year to year.
Ms Martin said the variation in the number of progeny per sire helped explained why Sheep Genetics adjusted results from syndicate sire groups compared to single sire matings when calculating Australian Sheep Breeding Values.
