Title: ACCELERATED SELECTION FOR HEN- HOUSED EGG PRODUCTION AND CORRELATED RESPONSES IN

Redacted for privacy The records of a population of White Leghorns at the Oregon State Agricultural Experiment Station, submitted to accelerated selection for hen-housed egg production on an individual and a family basis at 40 weeks of age for 18 years, were studied. An analysis was made to determine the relative efficiency of accelerated selec-tion compared to direct selection for egg production based on annual records. When annual means of the production line were compared with control populations, accelerated selection proved to be effec-tive in obtaining genetic gains in hen-housed annual production by increasing the part-year or egg production to February 1 while the residual production remained unchanged. Reliable estimates of genetic parameters obtained from the pooled analysis of the data demonstrated that accelerated selection:'í, iv': on the basis of egg production to February 1 is justified and coul