198 



Kansas Academy of Science. 



Table showing initial and final weights, in pounds, of pigs in nutrition 

 experiment No. 6, concerning the deficiencies of corn. K. S. A. C, July 3 

 to December 30, 1915, 180 days. 



*Augu8t 2 to December 30, 1915, 150 days. 



Lots 35, 36 and 37 were introduced for the purpose of still further 

 guiding our conclusions by knowledge concerning the possible influence 

 of nutritive ratio on the results that might be obtained. Corn, butter- 

 milk casein, and ash were used in each case. In lot 35 the nutritive ratio 

 of 1 :3 was narrow, that is, it was rich in protein, that of lot 36 was 1:6, 

 intermediate between lots 34 and 35, while that of lot 37 was narrow at 

 the beginning of the trial and widened month by month. 



In lots 34, 35, 36 and 37 the same food substances were used, but in dif- 

 ferent relative amounts. The substances were known to be adequate for 

 nutrition, but the most suitable relation among them might well be an 

 important question for investigation, and the lots furnished a valuable 

 background for judgment concerning the other lots. 



Table VI summarizes some of the more interesting points concerning 

 the growth of these pigs. As the experiment has just been concluded 

 the chemical results are not at hand as yet. The gains made by the sev- 

 eral lots show unmistakably their general nutritional condition. The 

 pigs were about two and one-half months old when they were put on 

 experiment, and were of nearly the same age. Each pig was fed what 

 it would eat up clean. Of course those that made the highest gains did 

 so by consuming the most feed. 



The corn-fed lot gained very little, though the largest pig greatly sur- 

 passed the others in its own lot, and also those in the corn-and-ash lot, 

 No. 31. While it gained thirty pounds, the average total gain of the 

 other five referred to was only five and four-tenths pounds. It is per- 

 fectly evident that the addition of ash only to the corn did not completely 

 supplement it. 



