Structure, registration and testing methodologies applied to the Catalan pig herdbook populations are described. Some phenotypic and genetic values are reported for different periods, traits and breeds. Breeding values are currently estimated using a multitrait animal model. Independent analysis is performed for on-farm and test station evaluations. The possibility7 of continuous evaluation of breeding stock, integrating herdbook and
 heterogeneous test information, is currently being investigated for cost effective selection decisions.

J. T Font, J. Soler, N. Trilla

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 17. Genetics and breeding of dairy and beef cattle, swine and horses, , 386–389, 1994
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