THE STABILITY OF 3 RANDOM-BRED CONTROL LINES OF TURKEYS

A survey of growth and reproduction traits over eight and seven genera tions, respectively, is presented for three randombred control (RBC) l ines of turkeys. Of the 26 traits measured, regression coefficients fo r the three RBC lines differed for only 8-wk body weight of females an d egg weight, although the difference was in magnitude and not directi on of the slopes. A common environmental trend was suggested for 8-wk male and female body weight and for 16-wk shank width of males. There was little evidence of genetic drift in these three RBC lines of turke ys.