36 



FEEDING VALUE OF CEREALS. 



BARLEY (Hordeum vulgare). 



The barleys which were studied in this investigation comprise 8 

 samples of imported grain representing four varieties and 123 samples 

 of grain grown in the United States representing 16 varieties. A 

 comparison of the composition of these various samples with that 

 of other compiled analyses is shown in Table XXVII. 



TABLE XXVII. Comparison of barley analyses by groups, domestic and foreign. 

 [Pounds per hundred pounds of dry matter.] 



oU. S. Dept. Agr., Bureau of Chemistry, 1898, Bui. 13, Pt. IX, p. 1173. 



& U. S. Dept. Agr., Bureau of Chemistry, 1895, Bui. 45, p. 14. 



c Konig, Chemie der menschlichen Nahrungs-und Genussmittel, 1903, p. 508 (recalculated to dry basis). 



A difference at once observed on examining this table is that the 

 barleys grown in the United States in 1906 have a higher protein 

 content than the foreign barleys analyzed at the same time. This 

 is also true, to a less degree, of the United States barleys of 1893 and 

 1898 compared with the analyses reported by Konig. 



It would naturally be expected that the United States barleys 

 would be higher in protein because in this country high protein 

 barleys are considered the best for brewing purposes, while in 

 Europe the best brewing barleys are considered to be those low in 

 protein. Although the barleys studied in this investigation belong 

 to the feeding class rather than to the brewing, the tendency in 

 this country to grow for high protein and in Europe for low protein 

 would have an effect on both feeding and brewing barleys in general. 

 The digestible nutrients, production values, and nutritive ratios of 

 these barleys is shown in Table XXVIII. 



TABLE XXVIII. Barley digestible nutrients averaged by groups, domestic and foreign. 

 [Pounds per hundred pounds of dry matter.] 



Digestible nutrients. 



Production value. 



Number 



Nutri- 



