Genetic trends on six economic traits were estimated in a line of White Leghorn layers selected over a period of 11 generations from 1976 to 1989 on the basis of the data from 7,602 cocks and 24,392 hens. The average selection differential per generation over the period was -2.59 days for age at first egg, I1.9 eggs for egg production to 43 weeks, 5.70 eggs for egg production from 44 to 57 weeks, 0.73 g for egg weight at 30 weeks. 0.5 i g for egg weight at 40 weeks, and 0.55 g for egg weight at 60 weeks. The animal model was used for the prediction of the breeding value for each trait. The estimated average changes of breeding value per generation over the generations 0-11 were -0.27 day for age at first egg, 1.38 egg for egg production to 43 weeks, 0.52 egg for egg production from 44 to 57 weeks, 0.28 g for egg weight at 30 weeks, 0.26 g for egg weight at 40 weeks, and 0.22 g for egg weight at 60 weeks. In view of the results obtained in this study, a substantial amount of genetic improvement in the six traits appeared to have been achieved in the line by selection for higher egg production, heavier egg weights and for lower age at first egg.