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Waikato Times, Volume 114, Issue 19125, 9 December 1933, Page 10

What does a hen wliloh lays 200 eggs Inherit from Its mother and father? asks A. Kirsch, writing In “Feathered World.’’ It Inherits, he adds, a digestive system superior to the hen which only lays 100 eggs, and the superiority lies in the fact that it can turn out double the number of eggs from the food It receives. . . Various animals Inherit various factors, and we breed for those factors. Tako two racehorses. Let them he equal in everything except the 6ize of the heart and then the one with the big heart will win every time, as the bigger heart is less strained In doing its work than the smaller heart. It will therefore be found that thoroughbreds have quite big hearts .compared with the ordinary horse. In the same wav we breed for superior digestive organs in the hen.”