DISCUSSION OF RESULTS. 



TABI.K X \.-Different varieties of domestic oats compared with foreign oats. 

 [Pounds per hundred pounds of dry matter.] 



29 



Chamberlain, loc. cit. 



Tln^r an- tin- i faults that without question should be used as a 

 l>a-i- f..r the compari-on of United States and foreign oats and on 

 which we -hou'd decide whether introduced varieties are desirable 

 n aa the ell'ect of the introduction on their composition is con- 

 cerned. An examination of the three results of (1) a typical United 

 \en in 1898, (2) the mean of 72 United States and 

 Canadian -ample- in 1893, and 3 the mean of 25 samples of strictly 

 I'nif.d States <>ats of l-""> show that the typical oats grown in the 

 I'm tee at the three dates 1893, 1898, and 1906 are very 



near'\ . ., < ially in the more important factors protein, car- 



hoh\ -(Irate, production value, and nutritive ratio and that they 

 diilVr materially from the foreign oat- reported in this table. 



This -ho\\^ that the composition of United States oats, as given, 

 i- n.. t obtained during one season nor on one variety, but that the 

 average composition O f oats grown in such different localities, as 

 shown in the detailed tables given at the close of this bulletin (p. 48) 

 and in different year-, i- di-tinctly different in certain points from a 

 similar a . >mp. -it ion of foreign oats. 



The factor which shows the least variation is the production value. 

 Thi- mean- that while the amount of the nutritive constituents is 

 different the real nutritive and productive value is only slightly 

 changed. That is. while the food value of the domestic oats remains 

 on the average nearly as high, and in individual instances is higher 

 than the f.-reign oats, its distinctive character as producing muscle 

 and energy rather than fat i- emphasized. Thus, the mean of the 

 purely domestic oats as to production value is only slightly lower 

 than that of the foreign oats, namely, 18.11 pounds of flesh gained, 

 or 7v.:77 Calorie-, compared with 18.17 to 18.35 pounds of flesh 



