EIGHTEENTH ANNUAL YEAR BOOK— PART VHI 459 



figuring we arrive at the above deductions, namely; — that 100 pounds of 

 buttermilk saved six pounds of corn and six pounds of meat meal tank- 

 age. 



Pricing the corn at |1.68 a bushel or $60 a ton the corn replaced is 

 worth eighteen cents and the tankage replaced at $80 a ton is twenty- 

 four cents, making a total replacement value of forty-two cents, hence 

 100 pounds of buttermilk in these particular experiments were worth 

 forty-two cents a hundred pounds. As corn and tankage go up the but- 

 termilk becomes' more valuable; as corn and tankage go down it becomes 

 lei's valuable. 



Had these tests been run today and the buttermilk figured on the 

 basis of the above rules the values would be much in excess of forty-two 

 cents or with the Hoard rule almost twice as much or about ninety cents; 

 with the G'urler rule, counting the corn at $1.68 a bushel, equals eighty- 

 four cents or exactly twice the value found. It is readily to be seen, 

 therefore, that buttermilk is worth the price of materials necessary to 

 replace it if buttermilk is not used and corn plus tankage replaces but- 

 termilk. 



Let us go further with this proposition and see the effect of feeding 

 buttermilk (remembering always that when we speak of buttermilk w'e 

 might just as well speak of skim milk) in large quantities, giving young 

 growing pigs of fifty-six pounds weight all the buttermilk they possibly 

 can drink, keeping it before them continuously until they reach the 

 weight of 300 pounds. Two groups were fed. Group I received shelled 

 corn self-fed plus 60 per cent meat meal tankage self-fed plus wheat mid- 

 lings self-fed plus rock salt self-fed, all feeds allowed "Free-Choice" style 

 in separate feeders. Group II was fed exactly the same excepting that 

 buttermilk was kept continuously before them in addition to the other 

 feeds. 



And how the buttermilk pigs did gain! They relished the buttermilk, 

 coming as it did from the college creamery where the cream before 

 churning was thoroughly pasteurized, thus eliminating disease producing 

 organisms. The following table shows the number of days required to 

 reach the weight of approximately 300 pounds, feed eaten, gains made, 

 and feed required for 100 pounds of gain. 



BUTTERJirLK VERSUS NO BUTTERMILK 



Group I Group II 



Final Weight 296 299 



Number of Days 218 156 



Average Daily Feed Eaten: 



Shelled Corn 4.87 lb. 2.27 lb. 



Meat Meal Tankage 37 .14 



Wheat Middlings 34 .22 



Buttermilk 32.16 



Rock Salt 



Average Daily Gain Per Pig 1.10 1.54 



Feed Required for 100 Pounds Gain: 



Shelled Corn 442. 148. 



Meat Meal Tankage 33. 9. 



Wheat Middlings 31. 14. 



Butter,milk 2091. 



Rock Salt 4 .1 



