54 Report of Department of Animal Husbandry of thh 



Heat values. — Heat or energy values were determined for three 

 periods with Cow 12 and for one period with Cow 10. The 

 detailed data are voluminous and are not given in this connec- 

 tion. Great care has been given to the various calculations and 

 confidence may be placed in the mathematical accuracy of the 

 figures presented herewith. ' 



The average heat values found for one gram of dry matter in 

 the feeding stuffs are as follows: 



'» 



Heat Valves of Feeding Stuffs. 



Calories per ^am, 

 Kind of material. dry matter. 



Mixed hay 4.494 



Alfalfa hay 4.477 



Oat straw 4. 480 



Corn meal (3 samples) 4.427 



Oats (2 samples) 4 . 50-5 



Rice meal (4 samples) 4.400 



Linseed meal 5.042 



Flaxseed meal 6 . 539 



Wheat gluten (2 samples) 5 . 773 



Sugar beets (32 samples) 3 . 925 



• 



The quantities of nutrients, total, digestible and otherwise, 

 fed to the two cows during several periods were as given below: 



Nutrients Consumed by the Cows. 



Total Total Total 



Total dry Dry digestible digestible carboby- 



Animal and Periods. matter matter in dry organic drates 



consumed, the feces. matter. matter. digested. 



Grains. Grams. Grama. Grama, Grams. 



Cow 12. 

 1st Period, Jan. 30 to Feb. 



6. 7 days 909S5.1 27698.6 63286.5 61699.8 53358.2 



2d Period, Feb. 19 to 26, 



7 days 92657.8 28.528. 1 64129. 7 62324.5 552-55. 1 



3d Period, Mar. 8 to 16, 8 



days 105.344.1 34509.2 708-34.9 68721.1 62698.9 



Cow 10. 



Feb. 4 to 14, 10 days 102.388.5 28023.3 74.365.2 71414.1 ' 60145.7 



The above quantities combined with the various calorimetric 

 determinations form the main data from which the energy values 

 and relations are calculated. It should be stated by way of 

 explanation that the loss of c/uergy from the escape of gases, 

 chiefly methane (CHJ, is based upon the results of numerous 



