Question1. We wish to improve yearling weight (YW) in our cow herd. $h^{2}$ for $\mathrm{WW}=.42$ mean of the selected bulls $=1130 \mathrm{lb}$ mean of all bulls $=1097 \mathrm{lb}$ mean of selected cows $=820 \mathrm{lb}$ mean of all cows $=813 \mathrm{lb}$ overall herd mean $=955 \mathrm{lb}$
Calculate: - Selection differential for: o Males - Females - Overall - Response to selection - New herd mean for YW