Feeding Dairy Cattle 

 "For all unused manure, or that which has been recently 

 applied to the land, without a crop being grown thereafter, 

 a credit of three-fourths of the total value of the phosphoric 

 acid and potash in the feed is allowed. Because a greater 

 loss of nitrogen commonly occurs in stored manure than in 

 manure dropped in the field by animals at pasture, a credit 

 of 70 per cent, of the total value of the nitrogen is allowed 

 when the stock have been fed at pasture and of only 50 per 

 cent, when they have been fed in the barn or yard." 



We all know that in all countries the material written 

 into the law is conservative. Therefore, the following 

 amounts of fertilizing materials estimated from the materials 

 in the feeds in the 60,000 pounds of the mixture above sug- 

 gested, are conservative estimates. The total available 

 nitrogen, if the feed had been spread on the ground, has been 

 multiplied by one-half, as allowed in the above extract from 

 the English law, and the available phosphoric acid and pot- 

 ash by three-fourths. The 60,000 pounds of the mixture has 

 been separated into its different constituents in order that 

 the difference in feeds might be seen. 



Available in Manure 



Nitrogen, Phosphoric acid Potash, 



pounds pounds pounds 



15,000 lbs. Distillers' dried grains 368.2 76.5 19.2 



15,000 lbs. Hominy feed 127.5 139.5 106.8 



15,000 lbs. Wheat Bran 192.0 331.8 182.4 



9,000 lbs. Gluten feed 182.7 41.7 15.6 



6,000 lbs. Oil meal 162.6 76.5 57.3 



Totals - 1033.0 666.0 381.3 



It will be seen that the above goes a long way towards 

 offsetting the fertility that has been sold off the farm. It 

 almost completely offsets the fertilitv that is sold in the milk, 

 leaving only that sold in the money crnj^s to l)e replaced by 

 the farmer. 



This 1)rings sharply to light the first fact that we wish to 

 establish, that by the judicious selection of feeds, all the 

 fertility that is sold as market milk mz\ ht fully replaced 1iy 

 the fertility in the feeds, even when the fertility in the feeds 

 is conservatively estimated. 



In the above tables, comparing milk with the feeds, there 

 is a slight shortage in the nitrogen. We must remember, 

 however, that only 50 per cent, of the available nitrogen in 

 the feed has been computed. Then, if legume crops are 

 grown, whatever of nitrogen is taken from the air is clear 

 gain. This emphasizes the importance of the growing of 

 legumes. 



Nothing has been said about the money value of these 

 Pase Eleven 



