COMMERCIAL FEEDS 



89 



Fish Refuse is the dried product from canneries, whale bone 

 establishments and factories where glue is manufactured. The 

 oil is generally extracted and the fish refuse dried and sold as 

 fish scraps or dry ground fish. 



Composition of Animai, and Fish By-Products 



Tankage 

 Per cent. 



Dried 



blood 



Per cent. 



Meat 

 scraps 



Dry ero'nd 

 Per cent. 



Bone meal 

 Per cent 



Meat and 

 bone meal 

 Per cent. 



Protein 

 Fat ... . 

 Ash.... 



46 



84 



2-5 



4.7 



55 

 14 

 20 



53 

 6 



31 



26 



3 

 67 



40 

 10 

 40 



All these products are highly nitrogenous and those that have 

 bone present contain a large percentage of mineral compounds. 

 Rations of cereals and these products, that contain high ash con- 

 tents, are very satisfactory with hogs, as the cereals are gener- 

 ally deficient in the nutrients that these products are rich in. 

 When corn is fed alone to hogs the addition of one of these 

 by-products containing bone proves beneficial. 



