128 AMERICAN DAIEYING. 



creased cost of producing pork as the pigs grew 

 older. 



Cost increases with age.— Lot 1, Sept. 3 to 

 24, with skim-milk at 25 cents per 100 lbs. and 

 corn-meal $20 per ton, it cost .0258 to produce 

 a pound's increase of live weight. With the 

 same lot and same feed Oct. 15 to Nov. 5 it cost 

 .035 per pound, and Dec. 10 to Jan. 24 it cost 

 .0434. Lot 2 showed nearly the same results. 

 The following is clipped from this bulletin: 



With grain costing, as this did, $20 per ton for corn-mea. 

 and $26 for middlings such pigs as these were cannot be fed 

 without loss when pork spUs at 4 cents alive or 5 cents 

 iressed. 



With skim-milk, however, the case is different for two 

 reasons: First, less "raw material," that is digestible mat- 

 ter, is required to produce a pound of growth, as shown be- 

 low. 



DIGESTIBLE MATTER PER 100 L,BS. OF GROWTH. 



Average digestible dry matter required to produce 100 

 lbs. gain: 



Lot 1. Lot s. 



Skim-milk and corn-meal 242 2iOii 



Meal and mlddUngB 331^ 334!^ 



Average for entire time 279 288Ji 



and secondly, because with skim-milk and corn-meal a 

 greater quantity of food can be handled daily. Thus by both 

 of these factors the time required for producing a 200-lb. pig 

 is reduced very materially. This point is not sufficiently ap- 

 preciated by many who feed pigs. With the present prices 

 there is but one way in whioh pork can be produced at a 

 profit and that is by producing a 200-lb. pig in the shortest 

 possible time. 



We see from Table II that the cost of growth and the 

 amount of food required to produce 100 lbs. of growth in- 

 crease as the pigs grow older, and it would have been much 



