Domesticated animals and plants; a Domesticated animals and plants; a brief treatise upon the origin and development of domesticated races, with special reference to the methods of improvement domesticatedan00dave Year: 1910 SYSTEMATIC IMPROVEMENT OF ANIMALS 189 On this basis, however, the two plans would compare about as follows: By grading, the farmer would have a crop of thirty half-blood calves. By pure breeding, his cows being reduced to one third, the number he could have would be but ten ; that is to say, he has more ' blood ' and therefore more improvement in his thirty half bloods t
Domesticated animals and plants; a Domesticated animals and plants; a brief treatise upon the origin and development of domesticated races, with special reference to the methods of improvement domesticatedan00dave Year: 1910 SYSTEMATIC IMPROVEMENT OF ANIMALS 189 On this basis, however, the two plans would compare about as follows: By grading, the farmer would have a crop of thirty half-blood calves. By pure breeding, his cows being reduced to one third, the number he could have would be but ten ; that is to say, he has more ' blood ' and therefore more improvement in his thirty half bloods than in his ten full bloods, as well as more animals Fig. 29. Choice (butcher) cow, $ per hundredweight Mumford, in Btdletin 78, Experiment Station, University of Illinois to Stock his farm and to afford material for selection. On the sire's side the expense has been the same. As between grading and mixed or unimproved breeding, the advantage is clearly with the former. The females are the same in both cases. The cost of feed for the sire is the same, and the only difference is in his original cost. A sire suitable for grading purposes can be had for a hundred dollars, which would be but $ extra for each calf, to entirely pay for the bull with the first crop of calves. But he will raise successive crops,
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