Fattening Pigs in the Dry Lot 



249 



Table XCVI. — Value op Skim-Milk or Buttermilk 

 Affected by the Price of Corn and Tankage 



When corn and tank- 

 age cost . . . . 



Skim-milk or butter^ 

 milk is worth . . 



Corn 56^ 

 per bushel 



Tankage 

 $40 per 

 ton 



21.6^ per 

 cwt. 



Com 70i 

 per bushel 



Tankage 

 SSOper 

 ton 



27.0 (! per 



cwt. 



Com84< 

 per bushel 



Tankage 

 SeOper 

 ton 



32.4^ per 

 fcwt. 



Corn 08^ 

 per bushel 



Tankage 

 $70 per 

 ton 



37.8 < per 

 cwt. 



Com $1.40 

 per bushel 



Tankage 

 $100 per 

 ton 



54.0^ per 

 cwt. 



These figures mean that, with the above ratio of 

 prices between corn and tankage, the value of skim-milk 

 or buttermilk was 10.8 per cent of that of tankage. Or, 

 stated in another way, 100 pounds of skim-milk or butter- 

 milk was worth 54 per cent of the value of a ton of tankage 

 divided by 100. 



The above valuations of skitn-milk and buttermilk are 

 wholly determined by the saving effected in the feed 

 required to produce a unit of gain. They do not include 

 a valuation of the 26 per cent faster gains made on the 

 rations containing the dairy products. For this reason, 

 therefore, skim-milk and buttermilk have somewhat 

 higher values than shown by these figures. 



All the experiments with fattening pigs in the dry lot 

 tend to show the feeding value of skim-milk and butter- 

 milk to be out of all proportion to the amount of dry 

 matter which they furnish. The great merit of these 

 two products must be assumed to lie, therefore, in the 

 kind or quality of the proteins and mineral compounds 

 rather than in their amoimts. Their palatability and 

 digestibility contribute also to their efficiency. 



Whey. 



As shown in Table XCVII, whey is even more watery 

 in composition than skim-milk or buttermilk. Further- 



