34 
The Bulletin 
tain amount of carbohydrates and fat as expressed by the nutritive 
ratio is insufficient. Aside from those points primarily discussed in 
this bulletin, the following should be taken into consideration: 
1. Proteins high in certain amino acid content. 
2. Sufficient amounts of vitamine, especially fat soluble. 
3. Sufficient amounts of essential minerals. 
4. A ration that is not excessively acid. 
Of the seventeen amino-acids found in protein, six or seven are 
found to be indispensable for greatest results. Protein feeds high in 
these compounds can be selected, and those low can be rejected. It 
was found that lysine and cystine are essential for proper growth of 
the bird and the feeds containing the greater amounts of these com¬ 
pounds are leguminous seeds such as soybeans and peanuts, also animal 
foods such as eggs, milk, meat and bone meal. They are found to a 
less extent in grains such as oats, wheat and rye but are absent in corn. 
Other amino-acids so essential are tryptophane and histidin which are 
essential for maintenance of life, and the feeds in which these com¬ 
pounds are abundant are seeds of leguminous plants such as peas, 
soy beans, and peanuts. To a less extent they are found in grain 
though absent in corn. They are also found in the animal feeds, such 
ns egg, milk, and meat scrap. 
i 
For vitamines of the fat soluble kind we look principally to eggs, 
milk, and to the leafy vegetables, the legumes being richer in this 
element than some of the other vegetables, such as rape and cabbage. 
The thin leafy vegetables contain much more than thick storage leaves 
like cabbage and are hence a more valuable green feed. It requires 
from 25 to 40 pounds of vegetables to contain as much vitamine as 
one pound of egg or one pound of whole milk. Skim milk has been 
robbed of much of its fat soluble vitamine, for this substance is found in 
the fat. 
Sufficient amounts of essential minerals can be furnished by meat 
and bone meal, bone meal, oyster shell, limestone grit, and sodium 
chloride in the mash. The minerals most feeds are short in are sodium, 
calcium and chlorine. 
There is a possibility of selecting feeds that are excessively acid in 
the body, and overtaxing the system to neutralize them, profound 
results may follow. 
Interest in acid-base balance of diets has increased greatly in recent 
years by those who have been scientifically studying these problems. 
It has been found that meats and cereals like wheat, corn, and oats 
have a preponderance of acid-forming elements, while on the other 
