The estimation of breeding value, in performance test station, for future natural mating sires, combined
 two evalution procedures : the national evaluation by BLUP animal model of all bulls already performance tested, and local evaluations on personnal computers, by the modified contemporary comparaison method. This second evaluation procedure includes the performance of tested bulls and breeding values of their parents estimated in the former national evaluation, (i) National BLUP animal model evaluation can be used to assess the
 efficiency of the selection, (ii) The local evaluation by modified contemporary comparaison allows an increase of accuracy by 15 to 25 % as compared to the local evaluation by contemporary comparaison.

L. Journaux, J. Gaillard, G. Renaud, F. Menissier

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 17. Genetics and breeding of dairy and beef cattle, swine and horses, , 161–164, 1994
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