This belief seems to be especially prevalent amongst breeders of cattle; but how, for example, a long-horned Highland bull, used for crossing with black hornless Galloway cows, could subsequently get Galloway-like calves out of pure Highland heifers it is impossible to imagine.
The plot of ground which can support a single cow (or 2 heifers, 3 calves or sheep, 4 pigs or 8 goats) is called a Kuhstoss (of which there are 270,389 in Switzerland), and it is in these terms that the productiveness of the alp is reckoned.
The single exception is provided by the slowly-maturing Highland breed of cattle, for which classes were allotted to (I) steers not exceeding three years old, (2) steers or oxen above three years old (with no maximum limit), and (3) heifers not exceeding four years old.
How would you define heifers? Add your definition here.