Successful farming : a ready reference on all phases of agriculture for farmers of the United States and Canada . , usually a pure-bred. This pure-bredmay be either the sireor dam, but it is usually the sire, as the sire can be used upon a numberof females in the herd and thus exercise greater influence in making theimprovement. If the pure-bred dam and a grade sire are used, verylittle improvement is made; besides, such improvement is restricted toone mating. If a pure-bred sire is used for five generations, it will meanthat at the end of that time the herd is practically pure-bred, but canne
Successful farming : a ready reference on all phases of agriculture for farmers of the United States and Canada . , usually a pure-bred. This pure-bredmay be either the sireor dam, but it is usually the sire, as the sire can be used upon a numberof females in the herd and thus exercise greater influence in making theimprovement. If the pure-bred dam and a grade sire are used, verylittle improvement is made; besides, such improvement is restricted toone mating. If a pure-bred sire is used for five generations, it will meanthat at the end of that time the herd is practically pure-bred, but cannever be registered. Rigid selection and the use of a pure-bred sireshould always be continued. By cross-breeding is meant the mating of two pure-bred animals ofdifferent breeds. Nothing is to be gained by such method of breeding, asit destroys the pure lines that may have been established and also has atendency to cause a greater variation. Cross-breeding is sometimesprofitably carried on in producing market animals, but it should never becarried beyond the first generation. Cross-bred animals should never be. Two Pure-bred Bulls. Polled Angus on the Left,Shorthorn on the Sires of this character should head the herd of all well-regulated stock farms. 1 Courtesy of Dept. of Animal Husbandry, Pennsylvania State College. BREEDING FARM ANIMALS 555 retained as breeders in the herd, as this has a tendency to cause sterilityin the breeding animals, besides retarding progress in building up the of a Breed.—The selection of the breed of animals must bedetermined by the farmer or livestock grower, as there is no such thing asthe best breed. All breeds of livestock have been developed for adefinite purpose and among all breeds are found desirable and undesirableindividuals. In deciding upon a breed, the farmer should secure all dataavailable about the breeds in which he is interested and adopt the one that
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
