Relationship between the performance test of bulls and their progeny test based on female and male data was estimated on the material of 1050 young bulls and 2011 heifers descending from 59 sires. Relationship between bull performance test and progeny test was negligible. It seems to be useful to apply progeny test.
Relationship between the performance test of bulls and their progeny test based on female and male data was estimated on the material of 1050 young bulls and 2011 heifers descending from 59 sires. There were some relationship between progeny test based on data concerning young bulls and heifers. The results obtained prove that progeny test based on data concernig heifers can be applied under Polish conditions.
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