Phenotypic data collected for routine genetic evaluation was used with and without marker information to ascertain paternity under different production scenarios. The probability of identifying the true sire was highest when contemporary groups had a mixture of animals with known and unknown paternity. Assigning an equal probability to candidate sires resulted in biased breeding values for animals with uncertain paternity. When molecular information was available, but not able to determine paternity, phenotypic information could be used to ascertain paternity. In fact, the proposed method was able to increase the probability of assigning the true sire using molecular and phenotypic information.

R. L Sapp, R. Rekaya, W. Zhang, J. K Bertrand

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume , , 24.17, 2006
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