ANIMAL FOOD FOR POULTRY.* 



W. P. Wheeler. 



SUMMARY. 



Of two rations which contained practically the same proportions 

 of the ordinarily considered gronps of constituents, but different 

 amounts of mineral matter, one wholly of vegetable origin proved 

 much inferior for growing chicks to the other ration, higher in 

 ash content, containing animal food. 



"Wlien the deficiency of mineral matter was made good by the 

 addition of bone ash, the vegetable food ration for chicks equalled 

 or somewhat surpassed in efficiency the corresponding ration in 

 which three-eighths of the protein was derived from animal food- 



For laying hens the rations containing animal food proved 

 superior to others in which all the organic matter was derived from 

 vegetable sources. The vegetable-food ration supplemented by 

 bone ash proved equally efficient for limited periods. 



Rations containing animal food proved very much superior for 

 ducklings to rations of vegetable origin which had, according to 

 the ordinary methods of estimation, practically the same nutritive 

 value. A ration of vegetable food supplemented by bone ash 

 proved much inferior to another ration of similar " composition " 

 in which three-eighths of the protein came from animal food. 



INTRODUCTION. 



Information about foods is one of the first essentials in poultry 

 keeping. A very important part of this information concerns the 

 necessity or economy of using animal food. The need for data 



Reprint of Bulletin No. 171. 



