INSPECTION OF COMMERCIAL FEEDSTUFFS 



19 



Phosphorus, Calcium, Manganese and Choline Content 

 of Commercial Poultry Feeds 



The mineral content of poultry mashes is, according to feediifg experts, of 

 considerable importance. Evidently some diversity of opinion as to proper 

 amounts exists, as indicated by the variations between brands made by different 

 manufacturers whose reputation for making satisfactory feeds is well established. 

 Much of course depends upon the supplementary feeds advocated. It is obvious 

 that a complete mash, whether it be for chicks or mature fowls, should have 

 recognized and uniform levels irrespective of brand if such levels have been 

 satisfactorily established and accepted. 



As the choline content of poultry feeds has been of recent interest, it is reported 

 in so far as there has been time to make the analyses. 



Choline Content of Feed Ingredients 



Number of 

 Samples 



Material 



Choline 



% 



Number of 

 Samples 



Material 



Choline 



1 Dehydrated alfalfa meal . . . 0.08 



1 Dried beet pulp 0.10 



3 Cottonseed meal 0.27 



2 Dry distillers grains 0.14 



4 Fish meal 0.32 



2 Shrimp meal 0.61 



1 Starfish meal 0.35 



1 Gluten meal 0.03 



2 Gluten feed 0.08 



1 Hominy feed 0.07 



1 Linseed meal 0.18 



4 Meat scrap, 50% protein. . . 0.13 



3 Meat and bone meal, 



45% protein 0.10 



2 Animal liver meal 0.38 



2 Ground oats 0.12 



2 Feed oats 0.08 



1 Oat feed 0.04 



4 Soy bean oil meal 0.28 



3 Wheat bran 0.12 



3 Standard wheat middlings 0.12 



1 Red dog flour middlings 0.11 



2 Dried whey 0.21 



2 Dried whey solids 0.17 



