It has come to our attention that an error was printed in J.Anim Sci. 2004 82:4153. The National Pork Producers CouncilMaternal Line National Genetic Evaluation Program: A comparisonof six maternal genetic lines for female productivity measuresover four parities. In Table 5, the number of animals in thetotal column for NH should be 1,416 and the number of animalsfor NSR should be 1,248.