VA 
REPORT OF THE DEPARTMENT OF “ 
ANIMAL HUSBANDRY. 
THE ADAPTABILITY OF CONCENTRATED BY-PRO- 
DUCTS IN POULTRY FEEDING.* 
W. P. WHEELER. 

SUMMARY. 
Poultry require at times a much larger proportion of protein 
and of mineral matter in the ration than common grain foods will 
supply. To prevent lack of these essential constituents concen- 
trated by-products of various kinds are fed. The adaptability of 
many of these materials cannot be satisfactorily determined ex- 
cept by observing the effects of their use under various conditions. 
As contributing toward this knowledge results from a few feed- 
ing trials in which concentrated by-products were freely used are 
here reported. | 
Of three highly nitrogenous rations fed to ducklings, one con- 
taining dried blood and bone-meal was associated with much 
slower rate of growth than one containing animal meal and an- 
other, containing “ milk albumen” and bone meal; though the 
“same amount of food under each ration gave equal increase 
in weight. The superiority of the two rations seemed due chiefly 
to their greater palatability. 
Of four rations carrying much concentrated food one con- 
taining a large proportion of gluten meals proved inferior. when 
fed to young chicks, to another having in addition bone-meal, 
and much inferior to others in which most of the gluten meal 
was replaced by animal meal or a by-product called “ milk 
albumen.” Unpalatability seemed largely responsible for the 
*A reprint of Bulletin No. 271. 
