noun
: a measure of the relative ability of a dairy bull to transmit desirable qualities to his daughters obtained by comparing the productivity of a certain number of daughters with that of their dams
noun
: a measure of the relative ability of a dairy bull to transmit desirable qualities to his daughters obtained by comparing the productivity of a certain number of daughters with that of their dams
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012