116 MASS. EXPERIMENT STATION BULLETIN 152. 



Summary of Coefficients, Gloucester Fish Meal, Series XVIII., Period X. 



The nutritive ratio of the basal ration of hay and corn meal 

 was as 1 : 10. It would have been better had the basal ration 

 consisted of hay and some nitrogenous concentrate with a ratio 

 of 1:7 or thereabouts, for it is well known that a highly ni- 

 trogenous concentrate added to a basal ration with a wide 

 nutritive ratio (1 :8 or above) has a tendency to improve the 

 digestibility of the fiber and extract matter of the latter, and 

 would indicate an apparent increase in the digestibility of the 

 fish. 



Gloucester Fish Meal. — In case of Sheep I.,^ the addition of 

 the fish to the basal ration did not appear to improve the 

 digestibility of the carbohydrates, although it may have had a 

 favorable eftect upon the protein of the basal ration. In case 

 of Sheep II. it exerted a noticeably favorable effect upon both 

 the fiber and extract, and perhaps upon the protein of the basal 

 ration. 



Wilcox Fish Guano. — Sheep II. did not digest as much of the 

 bone (ash) as did Sheep I. The fish seemed to exert a slightly 

 favorable eftect upon the fiber, but an adverse eftect upon the 

 extract matter. The addition of the fish did improve the 

 digestibility of the fat in the basal ration. 



1 The coefiScients with this sheep were not satisfactory. 



