324 BOARD OF AGRICULTURE. 



waste products that are valuable as concentrated cattle food. So 

 far as analysis can determine, the cake ranks in value with linseed 

 meal containing the minimum percentages of protein and fat. 



Skimmki) Milk and Buttermilk vs. Corn Meal, Bran, &c. 



The following is a record of correspondence with A. C. Chandler, 

 Esq., of New Gloucester, in regard to the relative feeding value of 

 several feeding stuffs. Mr. Chandler wrote as follows : 



'o 



New Gloucester, Maine, October 21, 188G. 



Will you please ^ive me the component parts of skimmed milk and of but- 

 termilk? Also please give me the nutritive or feeding values of skimmed 

 milk and buttermilk for swine as compared with corn meal, barley meal, 

 bran middlinojs, &c , &c. I want to know what buttermilk is worth as 

 compared with other foods for ho^s and pigs. 



Beply. ''The average composition of skimmed milk, buttermilk, corn 

 meal, and wheat bran is as follows : 



In ICO pounds there is found 



Dry matter, Protein,* Carbohydrates, Fat. 



Skimmed milk 10. lbs. 3.5 lbs. 5.0 lbs. 0.7 



Buttermilk 9.9 '' 3.0 " 5.4 '• 1.5 



Corn meal 85. '• 9.09 '' 70.76'' 4.63 



Wheat bran 83. '' 14.82'' 63.67" 3.67 



The above figures represent the average composition of these foods. 



As can be seen by these figures it takes not far from eight and one- 

 half pounds of skimmed milk or buttermilk to furnish as much dry mat- 

 ter to the animal as one pound of either corn meal or wheat bran. This 

 dry matter differs in its digestibility in the several cases. While the ani- 

 mal digests practically all of the compounds of iikimmed milk or butter- 

 milk, only about nine-tenths of the dry matter of corn meal is digested, 

 and three-fourths of the dry matter of wheat bran, so that about 7.5 

 pounds of either kind of milk will furnish about the same amount of di- 

 gestible material as one pound of corn meal, the relation in the case of 

 the milks and wheat bran being as 6.6 is to 1. 



It should be noticed, further, that the milk does not contain the several 

 food ingredients in quite the same relative quantities that the grains do. 

 Seven hundred lift)' pounds of skimmed milk would furnish 75 pounds of 

 digestible matter, 26.25 pounds of which would be protein (nitrogenous ma- 

 terial), and 42.75 pounds fat and suo^ar. One hundred pounds of corn meal 

 would, on the other hand, furnish about 75 pounds of digestible material 

 (the same amount as the 750 pounds of skimmed milk), onl}-^ 8.2 pounds 

 of which would be protein, and 65 pounds of which would be carbohy- 

 drates (starch, sugar, &c.). The fact that the milks furnish a larger rel- 



♦Mostly casein. 



