EXPERIMENT STATION BULLETINS. 279 



in live weight from 104.6 pounds to 173.6 pounds at the rate of .7 pounds 

 per head daily. The appetites of the pigs receiving tankage in their 

 ration was better than where corn only was used and their coats were 

 smoother and more oily looking. 



SUMMARY. 



1. The indications from the results given in Part 1 are that digester 

 tankage can be used successfully as a substitute for skim milk in the 

 ration for the growing pig, from weaning time on. 



2. In Tests 2 and 3, Part 1, the following rations were used, viz.: 

 First, middling 20 pounds, corn meal 10 pounds, tankage 3 pounds, the 

 last forming 1-11 of the ration ; second, middling, 20 pounds, corn meal 

 10 pounds, and skim milk 90 pounds. In both cases the gains from the 

 skim milk ration were a little greater, but the cost of production from 

 the tankage ration was much less. This would seem to suggest that a 

 slightly greater proportion of tankage than 1-11 of the ration could be 

 fed, increasing the gains somewhat, and still keeping within the cost of 

 production of the skim milk ration. 



3. The check ration of middlings 20 pounds and corn meal 10 pounds 

 mixed with water, produced smaller gains at a greater cost than either 

 of the rations containing tankage or skim milk. 



4. In Tests 1 and 2, Part 2, corn meal and tankage in the propor- 

 tions of 5 and 1, and 9 and 1, were compared with rations of pure corn 

 meal; in tests 3 and 4, the two rations were made up as follows, viz.: 

 First, middlings 20 pounds, corn meal 10 pounds, and tankage 3 pounds, 

 the last forming 1-11 of the ration, and second, middlings 20 pounds 

 and corn meal 10 pounds. The following conclusions may be with- 

 drawn : 



(1.) The gains were greatest in every case where tankage was used 

 in the ration, and 



(2.) This was more and more noticeable as the feeding period was 

 prolonged. 



(3.) Test 2 was conducted 84 days, and in it tankage formed 1-10 

 of the ration ; tests 3 and 4 were conducted 98 days and in them tankage 

 formed 1-11 of the ration : in all three the cost of production was less 

 where the tankage ration was used. In Test 1, conducted 70 days, with 

 tankage forming 1-6 of the ration, the gains, though greater, were a 

 few cents per cwt. more expensive in the tankage ration. 



5. In general the figures given indicate that tankage can be used to 

 good advantage in the ration for the fattening hog, as well as for the 

 growing pig. 



