POULTRY FEEDS AND FEEDING 



pigeons add not in special favor with those who keep 

 pigeons. 



SOY BEANS AND SOY BEAN MEAL 



Soy beans are raised very extensively in Japan and 

 China and used both for human food and feed for animals 

 in those countries. The bean contains from i6 to 21 per 

 cent of oil and more crude protein than any other seed or 

 grain used as a feed. Soy beans have not been raised much 

 in this country except as a forage crop for stock but are 

 being raised more extensively throughout the southern 

 part of the United States where mills have been erected for 

 handling this seed. They are a leguminous crop which is 

 being used very extensively in the South as a green crop 

 to improve and enrich the soil. Poultry do not relish soy 

 beans either raw or in the cracked form but will eat soy 

 bean meal fairly freely where it is mixed with other ground 

 feeds. Oil is extracted in the process of manufacture and 

 the soy bean meal produced in this process becomes avail- 

 able as a feed for stock and poultry and is also used as a 

 fertilizer. The oil is used for human food and commer- 

 cial purposes. 



Soy bean meal contains the same amount of digestible 

 protein as cottonseed meal and is considerably higher in 

 carbohydrates. Some soy been meal is being used in the 

 South and to a less extent in the North as a poultry feed, 

 both in commercial mash feeds and in rations mixed at 

 home. A large amount of this feed is imported on the 

 Pacific Coast from Japan and China and is being ex- 



72 



