T. D. Curtis, Hints on Dairying
“ As a rule, it may be said to be the duty of every dairyman to breed from the best blood obtainable, and to rear the heifer calves from his best cows. Unless this condition is fulfilled, the dairy as a whole must run down. It is only by constant care and breeding from the best that the present status can be maintained, and possibly a little progress made. It should be the ambition of every dairyman to constantly improve the value of his herd, and to make progress in every department of his dairy, while improving the quality of his product. ”
