. Genetics in relation to agriculture. Livestock; Heredity; Variation (Biology); Plant breeding. CONDUCTING BREEDING INVESTIGATIONS 597 Cruickshank bull Champion of England is the striking feature of his pedigree. The criticism of the above pedigree is not, it should be clearly under- stood, directed at the method of recording pedigrees in the American Shorthorn Herd-book, although it is a fair statement to make that the method that has since been employed of recording simply the name of sire and dam is more economical and just as satisfactory. Even by the old method, however, the pedigrees ar
. Genetics in relation to agriculture. Livestock; Heredity; Variation (Biology); Plant breeding. CONDUCTING BREEDING INVESTIGATIONS 597 Cruickshank bull Champion of England is the striking feature of his pedigree. The criticism of the above pedigree is not, it should be clearly under- stood, directed at the method of recording pedigrees in the American Shorthorn Herd-book, although it is a fair statement to make that the method that has since been employed of recording simply the name of sire and dam is more economical and just as satisfactory. Even by the old method, however, the pedigrees are so recorded that the entire set of ancestors may be determined. The point, however, is simply this, that such pedigrees should not be used as standards of judgment of ancestry, but rather those of the type shown in Fig. Fig. 231.—Tilly Alcartra. No. 123459, Holstein. Production for one year, lb. milk containing lb. butter fat (average test per cent.). The addition of other data to the pedigree indicative of the value from a breeding or productive standpoint of the animals therein listed adds greatly to its value, particularly to the new breeder who is not yet fully familiar with the great names of breed history. The pedigree of Tilly Alcartra 123,459, the record-breaking Holstein-Friesian cow por- trayed in Fig. 231, is given in Fig. 230 along with data relative to the performance and breeding value of the animals whose names appear in the pedigree. A pedigree worked out Uke this one is a much safer guide in judging merit than one which gives data proving that the animal in question traced in the fourteenth generation three times to some famous sire of ancient history. Performance should be insisted upon all along the line, and when three or four generations of some subdivision notable line fail to bring forth performing individuals, it is high time Digitized by Microsoft®. Please note that these images are extracted from scanned page images
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