Successful farming : a ready reference on all phases of agriculture for farmers of the United States and Canada . A Good Dairy is beneficial to the health of the cows. requirements are based upon performance, and hence only worthy animalsfind their names on its lists. The different breeders have different namesfor the books in which such animals are listed, but all serve the samepurpose. Representatives from the different experiment stations vouchfor the production of the animals after personal visits. Such recordshave done much toward developing the modern, wonderful milking co
Successful farming : a ready reference on all phases of agriculture for farmers of the United States and Canada . A Good Dairy is beneficial to the health of the cows. requirements are based upon performance, and hence only worthy animalsfind their names on its lists. The different breeders have different namesfor the books in which such animals are listed, but all serve the samepurpose. Representatives from the different experiment stations vouchfor the production of the animals after personal visits. Such recordshave done much toward developing the modern, wonderful milking sires should have some near relatives whose names appear inthe advanced registry of the particular breed. All breeders of pure-bredstock should be encouraged to make advanced registry tests so as to improvethe sale of bull calves from their herds. The Bull is Half the Herd.—It is one of the sayings of breeders thatthe bull is half the herd. Where in-breeding is practiced, he is even 1 Qourtesy of the Department of Dairy Husbandry, Pennsylvania State 1 From Maryland Agricultural Experiment Station Bulletin 177, THEDAIRYHERD 649 more than half. Even if the cows are scrubs, there is no place in the herdfor a grade or scrub bull. Only a pure-bred bull should head a herd ofcows. The bull should possess quality and type and come from a long-line of good producing females. In order to be sure that a bull can improvea good herd of cows, only tested bulls should be used. In order to testa bull he should be bred when young to a few of the good cows in the herdand the resulting heifer calves watched. If they are better than theirdams, a good herd sire is indicated. Professor W. J. Fraser, of the University of Illinois, calculates thatin a herd of thirty-five cows it costs $3 per heifer more to have them siredby a pure-bred bull than by a scrub. This, then, is the total cost of pro-viding each heifer calf with one good parent. If this same heifer calfproduces only t
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