32 
The Bulletin 
4, 1:7.6, which from a protein-carbohydrate standpoint should be 
ample. It contained approximately a mineral balance. There was 
required to produce one pound of gain 2.91 pounds grain and mash, 
7.49 pounds sour skim milk (reduced to dry matter would be 0.74 pound) 
and 1. pound green feed (reduced to dry matter would be 0.1 pound), 
or a total of 3.75 pound feed. 
The feeds here studied which are richest in calcium are oyster shell, 
limestone grit, soybean meal, velvet bean meal, meat and bone meal, 
bone meal, and eggs in shells. Those richest in magnesium are oyster 
shells, limestone grit, peanut meal, soybean meal, velvet bean meal, 
meat and bone meal, bone meal, and wheat middlings. Those richest 
in phosphorus are eggs in shells, peanut meal, soybean meal, velvet bean 
meal, meat and bone meal, oats, bone meal, wheat middlings, corn, and 
wheat. Iron does not appear to be deficient in most feeds. Chlorine 
is most abundant in eggs in shells, velvet bean meal, and in meat and 
bone meal. Sodium is most abundant in eggs in shell, peanut meal, 
soybean meal, meat and bone meal, bone meal, and wheat middlings. 
Most cereals and their by-products are deficient in chlorine, sodium, 
and calcium. Potassium does not appear to be deficient in any of the 
feeds. 
Feed mixtures such as grains and their by-products need such feed 
stuffs as meat scrap, bone meal, meat and bone meal, milk, and oyster 
shell and limestone grit, with 1 per cent sodium chloride to make good 
the deficiency in phosphorus, mangesium, calcium, chlorine, and 
sodium. Of the vegetable products both soybean meal and peanut 
meal are particularly rich in sodium, potassium, and magnesium. 
The excellent results which have been obtained by these two feeds 
are, in part, due to this fact. 
In Feed Mixtures 5 and 6 we have introduced the most simple mixtures 
which have given very gratifying results in those tests where these feeds 
were given with milk. There is here a fair amount of the most vital 
minerals, besides essential amino acids, the only minerals deficient is 
chlorine which can be compensated for largely by adding % per cent 
sodium chloride. These mixtures consist of but two feeds, viz.: corn 
meal with, in the one case, soybean meal and in the other peanut meal. 
In Mixture 7 the mineral and protein deficiencies are compensated for 
by the meat and bone meal. It would be expected that better results 
would be attained by Mixture 8 which has, in addition to the fat ex¬ 
tracted, soybean meal, bone meal and meat and bone meal. Ground 
oats is added in Mixtures 9 and 10 which no doubt adds to the palata- 
bility and lends a greater variety. 
Mashes or ground feed mixtures are essential in chick raising to 
