144 



Journal of Agricultural Research 



Vol. XX, No. 2 



Table II. — Potential acidity and potential alkalinity of southern poultry feeds 



Kinds of feed. 



Acid. a 



Corn meal , bolted . . . 



Pinhead oats 



Whole wheat 



Wheat middlings. . . . 



Bone meal 



Meat and bone meal . 



Rolled oats 



Whole corn 



Hulled oats 



Velvet bean meal . . . 



Soybean meal 



Peanut meal 



Skim milk 



Rape, green 



Limestone grit 



Oyster shell 



Dried buttermilk. . . . 



Digester tankage 



Dried blood 



Egg, including shell. 



Peas, dried 



Potatoes, sweet 



Potatoes, Irish 



Rice 



Spinach 



Turnips 



Beans, dried 



Beets 



Bread, hard 



Cabbage 



Carrots 



Fish, dried 



Hominy 



Lettuce 



206. 58 



2, 104. 60 



565- 13 



2i-75 



121. 94 



79.09 



62. 17 



156.01 



94.90 



23.18 



15-33 



11, 943- 80 



8, 782. 10 



803. 96 



789. 89 



63.68 



108. 21 

 44.76 

 79.17 



2-55 



24. 00 

 24. 00 

 26. 00 



122. 00 

 25.00 

 79. 00 

 50.00 



22. 00 

 38.00 



27. 00 



43. 00 



38.00 



36.00 

 24. 00 



° Expressed in excess cubic centimeters per pound of feed. 



The bird gradually, in these tests, consumed more grain as it grew 

 older. Likewise it was found that as a pullet comes into laying it con- 

 sumes a greater proportion of mash and again slackens in its mash 

 consumption as it goes into a nonlaying period. 



The consumption of more grain and less mash has a tendency to lessen 

 the base balance or, if the balance is already acid, has a tendency to 

 increase the acid balance. 



It was noted that the cereals are decidedly acid while the by-products 

 from the legumes are of a base reaction. Feeds containing by-products, 

 such as soybean meal and peanut meal, have a tendency to add to the 

 base balance. 



It is noted that rations containing buttermilk, digester tankage, and 

 meat scrap and bone meal give a base balance in all cases. 



The soda in the blood makes the blood meal base but not so strongly 

 so as digester tankage or meat and bone meal containing much bone. 



