. Breeding of farm animals. Livestock. 2l6 BREEDING OF FARM ANIMALS productive capacity. This is shown in the preceding tabulation which gives the average number of cows in the herd, the average amount of milk produced by each animal in a year, the average gain in milk as well as the average amount of butter fat produced by each animal in a year and the average gain in butter fat, in periods of five years each beginning in 1891 and continuing to the close of Fig. 69—High-Producing Holstein-Friesian Cows Daughters of Prince Ybma Spofford 6th The tabulation illustrates the major drawback
. Breeding of farm animals. Livestock. 2l6 BREEDING OF FARM ANIMALS productive capacity. This is shown in the preceding tabulation which gives the average number of cows in the herd, the average amount of milk produced by each animal in a year, the average gain in milk as well as the average amount of butter fat produced by each animal in a year and the average gain in butter fat, in periods of five years each beginning in 1891 and continuing to the close of Fig. 69—High-Producing Holstein-Friesian Cows Daughters of Prince Ybma Spofford 6th The tabulation illustrates the major drawback in breed- ing pure-bred animals. Practically all of the heifer calves were retained in 1906-10, there being little or no selec- tion practiced. This resulted in a rapid increase in the number of cows in the herd and a corresponding decrease in production. The building up of a herd, whether of grades or purely bred animals, depends upon judicious selection. Influence of the sires.—In the building up of a herd the influence of the sires is of great importance. The ad- vancement in the Glista family has probably come largely through the sires, although in the tables showing female descent there is no indication of this. It is difficult to. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harper, Merritt Wesley, 1877-. New York, Orange Judd
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectlivesto, bookyear1914
