Since hogs that grow fast are usually more efficient(less feed per pound of gain), growth rate is very important.
Records such as days to 230 pound or daily gain on test are tools used to measure growth rate.
Do not be misled into thinking you can measure growth rate by visual appraisal alone.
Good performance comes in varied types of hogs so if growth records are avail- able, use them.
If records are not available, select breeding stock that are large for their age, moderate in frame size, and adequate in depth and capacity.