THE OIL BY-PRODUCTS 215 



coast. It contains 20 per cent or more of protein. It is a 

 very palatable feed and, if cheap enough in price, may be used 

 for all classes of farm animals. It is especially recommended 

 for dairy cows, as it produces a fine butter of considerable 

 firmness. It has the disadvantage of becoming rancid in 

 a short time in warm weather. 



Sunflower seed cake is the residue remaining after 

 extraction of the oil from the sunflower seed. It is used 

 mostly in Russia. It contains about 39 per cent of protein. 



Rape seed cake is the residue remaining after extraction 

 of the oil from rape seed. It is quite high in protein, 33 

 per cent. 



Sesame seed cake is the residue after extraction of the 

 oil from the sesame seed. Like the other oil by-products it 

 is high in protein, 40 per cent. 



Corn oil meal, or germ meal has already been discussed 

 under " Corn By-products." 



Peanut hulls are sometimes ground and sold as "peanut 

 bran," or used as a constituent of mixed commercial feeds. 

 Their feeding value is lower than that of straw. 



