176 EXPERIMENT STATION RECORD. 



in each case being 2.13 cts. When corn shives was substituted for part 

 of the hominy chop in the linseed-meal ration durino- the second 

 period, the average daily gain was 0.73 lb. per pig, as compared with 

 0.53 lb. in the lot receiving no corn shives. The cost of a pound of 

 gain in each case was 4.56 cts. When corn shives were substituted 

 for part of the hominy chop in the gluten-meal ration in the second 

 period, the average daily gain per pig was 0.78 lb, as compared with 

 0.85 lb. for the lot receiving no corn shives, the cost of a pound of 

 gain being 2.91 cts. in both cases. 



Though the method is not explained, the author makes the following 

 calculation : 



" With the linseed ration the fodder [ground-corn shives] showed an estimated 

 value of $28 per ton, and with the gluten ration an estimated value of $20 per ton. 

 If the fodder is not taken into consideration, the average cost for producing 100 lbs. 

 of gain with the linseed ration was S4.18, and with the gluten ration $2.70." 



The value of cowpea pasture, artichoke pasture, and sweet potatoes 

 in addition to a ration of grain and skim milk with and without corn 

 shives was tested with 6 lots of 5 pigs each. Lot 1 was fed ground-corn 

 shives, grain, and during the last -1 months of the test skim milk also; 

 lot 2 was fed the same ration except that for the last 2 months of the 

 trial sweet potatoes and sweet-potato strings were fed. Lots 3 and 1 

 were fed the same ration as lot 1 for part of the test, and were then 

 pastured on cowpeas from 2 to 1 weeks, and finally were given the 

 run of a plat of artichokes. Lots 5 and 6 were fed at first a ration of 

 grain and skim milk; later lot 6 was turned into a cowpea pasture, 

 and. during the last month of the test, was fed sweet potatoes in addi- 

 tion to gluten meal and skim milk. Lots 1 and 2 were fed 5 months, 

 lots 3 and 4, 4 months, and lots 5 and 6, 3 months. The average gain 

 of the pigs in lot 1 was 108.8 lbs., and the cost of a pound of gain, 

 3.32 cts. The pigs in lot 2 gained on an average 71.6 lbs., the cost of 

 a pound of gain being 3.24 cts. when fed milk and grain. When fed 

 sweet potatoes, over 100 lbs. were required per pound of gain, which 

 would make the potatoes worth about !$1.60 per ton. In the author's 

 opinion, sweet potatoes were not an economical feed, possibly because 

 the pigs were too large. With the pigs in lot 6, which were some- 

 what younger than those in lot 2, they were found to have a value of 

 ^2.40 per ton. On cowpeas, the pigs in lots 3, 4, and 6 gained on 

 an average 6, 31, and 49 lbs. respectively. In the author's opinion, 

 cowpeas are better adapted to young pigs than to older pigs. The 

 composition of the artichokes fed is reported, but the results obtained 

 are not spoken of at length. 



The results of the individual tests are discussed in considcral)le 

 detail. Some of the deductions follow: 



"It would seem to be desirable to mix with hog rations some material as a substitute 

 for grazing when feeding pigs in confinement, or if it is not possible to have a material 



