Relationships between body weight, wither height, and various other body traits, including heart girth, body length,
and hip width, were studied using data from six experiments with 2625 observations. Body weight and wither height
were regressed on the other body traits. Regressions of body weight including the linear, quadratic, and cubic effects of
a single independent variable (heart girth, wither height, hip width, or body length) indicated that each measurement
would be useful in predicting body weight (R2 > .95)~ the regression of bod? weight on heart girth had the highest R ,
followed by hip width. Similarly, regressions of wither height on heart girth, wither height, hip width, or body length,
including linear, quadratic, and cubic effects, yielded R2 > .99. Regressions considering multiple traits as independent
variables showed that the addition of a second body trait added little to the already high multiple correlations found
with a single variable. In management situations for which body weight or wither height cannot be measured, various
other traits can be used to estimate these body measurements accurately. (Key words: heifer, growth, weight,
wither height)