RATIONAL FEEDING OF ANIMALS 353 



value of the different grains and milled products. A 

 pound of one grain in a mixed ration will produce about 

 as good results as a pound of another grain. For exam- 

 ple, wheat has been found to have practically the same 

 feeding value as corn, oats, or barley. Common farm 

 grains will give the same yield of milk and butter-fats as 

 bran or shorts, and, on the whole, have a tendency to 

 produce slightly better results. Oil meal in medium 

 amounts in a ration, produces from 20 to 25 per cent, 

 better results than bran. Oil meal, cottonseed meal, and 

 gluten meal all have about the same general milk-pro- 

 ducing value. 



Clover hay, corn silage, corn fodder, alfalfa and oat 

 hay are among the most valuable coarse fodders for milk 

 production, preference being usually given to clover hay 

 when cut in early or full bloom. When silage is not 

 fed, roots should always form a part of a dairy ration. 

 Roots are valuable largely because of their palatability 

 and the favorable influence which they exert upon diges- 

 tion rather than for any large amount of nutrients. 



478. Food Requirements of Swine. The nutrients 

 required by swine vary with the stage of growth 

 more than in the case of other animals. In the earlier 

 stages of growth, particular attention should be given to 

 furnishing a liberal supply of available protein and min- 

 eral matter. A ration for a ico-pound animal should 

 contain about 0.5 pound digestible protein and 2.5 pounds 

 digestible carbohydrates while that for a 200- pound ani- 

 mal should contain about 0.6 pound digestible protein 

 and nearly 4 pounds digestible carbohydrates. For grow- 



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