USEFUL ALGAE — CHASE 429 



The following minerals are included in the above analysis : 



Percent 



Iodine 0. 15 



Iron • 13 



C!opper • 003 



Manganese • 05 



Phosphorus • 29 



Calcium !• 28 



Sulfur 1.04 



Sodiiun 6. 50 



Potassium 12. 49 



Chlorine 13.67 



Magnesium . "^2 



There are two commercial companies on the Pacific coast which 

 utilize the tremendous groves of giant kelp that grow there to manu- 

 facture seaweed products (pi. 7), among which are seaweed meals 

 used for poultry and cattle rations. 



A meal manufactured by a firm in Los Angeles, Calif., is dried and 

 ground kelp for use in animal feeds. 



This meal has been tested for vitamins as shown in table 3. 



Table 3. — Results of vitamin tests on Kelco-Meal 



Vitamin A 3,000 international units per pound. 



Vitamin B (thiamin chloride) 45 international units per pound. 



Vitamin D None. 



Vitamin E Trace. 



Vitamin G (riboflavin) 3,500 micrograms per pound. 



Vitamin F (filtrate factor [pantothenic 300 University of California units per 



acid]). pound. 



Vitamin K Present. 



Of the above vitamins, vitamin G is present in sufficient quantity to 

 be commercially important. 



Owing to the vitamin G and mineral content, this meal can be used 

 in combination with a protein source such as meat scraps or fish 

 meal to supplant dried milk in various poultry and animal rations, 

 thus freeing dried milk for more essential uses. 



A concern in Los Angeles, Calif., leases from the State Bureau 

 of Fisheries local kelp beds, which it harvests and dehydrates with 

 a triple-drum air-drier originally designed to handle dehydrated 

 alfalfa. For several years, it has manufactured a poultry feed, 

 but recently they have also produced a cattle feed and a hog feed. 

 These are all three supplementary feeds. In addition to machine- 

 dehydrated kelp, the cattle feed contains ground dried fish, molasses, 

 fish liver meal, and irradiated yeast. The hog feed also contains, 

 in addition to the above, fish presswater concentrate, vitamin A, fish 

 liver oil, ground oyster shell, sodium bicarbonate, nut charcoal, and 

 anhydrous manganese sulfate. The poultry feed consists of machine 



