644 



FEEDS AND FEEDING 



computation it will be found that in these trials each 100 Ibs. of skim 

 milk saved 10.86 Ibs. corn and 7.29 Ibs. tankage, without giving any 

 credit for the more rapid gains produced by feeding skim milk. The 

 high value of the dry matter in skim milk is shown by the fact that 100 

 Ibs. of skim milk, containing only 9.9 Ibs. dry matter, replaced 15.7 Ibs. 

 of dry matter in corn and tankage. As is pointed out later, skim milk 

 would have had a lower value than this if more had been fed than was 

 needed to balance the ration. (960) As a supplement to other grains, 

 skim milk has about the same value as when fed with corn. 



For pigs before and soon after weaning skim milk is best if fed fresh, 

 tho even for young pigs skim milk which has soured under sanitary con- 

 ditions is satisfactory. However, if sour milk is to be used, it should 

 always be fed sour. Feeding the milk sweet at one feeding and sour at 

 the next is apt to cause scours. 



959. Money value of skim milk. From the fact that 100 Ibs. of skim 

 milk is equal in feeding value to 10.86 Ibs. corn and 7.29 Ibs. tankage, 

 its money value with corn and tankage at various prices may be readily 

 computed. As is shown later (962), undiluted buttermilk equals skim 

 milk in feeding value. For convenience, the money value of 100 Ibs. of 

 skim milk or buttermilk with corn and tankage at various prices is 

 shown in the following table. It should be borne clearly in mind that 

 these values will be secured only when no more milk is fed than is needed 

 to balance the ration. The value of these dairy by-products when larger 

 amounts are fed is discussed later. (960) 



Money value of skim milk or buttermilk per 100 Ibs., for pigs 



This table measures, in a general way, the value of skim milk when 

 properly combined with grain for fattening pigs. Those familiar with 

 this feeding stuff and its worth for bone and muscle building know that 

 in many cases, especially for young pigs, its value is much higher. 



The table shows clearly that the actual value of skim milk and butter- 

 milk is influenced by the price of both corn and tankage. As a rule, when 

 corn is high in price, tankage will also be expensive. Therefore blanks 

 are left in the table for price combinations which are practically never 

 met, such as corn at $1.00 per bushel and tankage at $60 or less a ton. 

 It will be noted that with corn and tankage at any usual prices, 100 Ibs. 



