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Colorado Agricultural Experiment Station and V. S. Department of Agriculture
Abstract
AN interpretation of factors affecting the production of forage crops is more complete and realistic if results can be expressed in terms of animal performance. Usually, yields of dry hay have been taken by the rancher as the final basis for evaluating factors affecting forage production. In certain instances, additional information is available on such quality factors as the percentages of crude protein, phosphorus, or other chemical constituents of the forage. These criteria have not proven entirely satisfactory.
In Gunnison County, Colorado, a test feeding plant for beef cattle was established where the relative merits of various management practices utilized in hay production and feed supplementation could be determined. This report covers a two-year period, 19501951, of investigation in which hays produced under variable fertility and harvest management practices were fed to cattle and the results evaluated in terms of beef production.
Procedure
Hay Production
Approximately 60 acres of a fairly representative high altitude meadow were used for the production of hay for subsequent beef cattle feeding experiments.
1 Joint contribution of the Colorado Agricultural Experimental Station; Soil and Water Conservation Research Branch, Agriculture Research Service, USDA; Soil Conservation Service, USDA; Gunnison County Research Committee; and several Colorado Ranchers and Farmers. Colorado Agricultural Experiment Station Scientific Series Paper No. 422.
2 Agronomist, Engineer, and Soil Scientist, Colo. Agr. Exp. Sta., and Soil and Water Conservation Branch, Agri. Res. Service, USDA, respectively.
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