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CONTROL BULLETIN No. 110 

 Assays of Vitamin D Carriers 



In continuation of the work begun in 1940, assays have been made of a number 

 of feeding oils. The results follow. But one sample fell below its guarantee. 

 The assays reported were made by Leonard R. Parkinson, Jr., technical assistant 

 in the Nutrition Laboratory. 



The Analysis of Feeding Molasses 



At the present time molasses is probably the most generally used ingredient 

 of animal feeds. Few dairy and horse feeds are without it and it is occasionally 

 found in poultry rations as well. It is also being used extensively in grass silage. 

 Its value apparently lies in its sugar content, although it may well be that certain 

 vitamins and the ash elements present in small amount should be given some 

 recognition in fixing its worth. A strict interpretation of the Feeding Stuffs 

 Act would require a protein, fat, and fiber guarantee for this product. Such a 

 guarantee for molasses would be meaningless. It is to be regretted that the rigid 

 requirements of the Act cannot be made more flexible in order to permit or make 

 obligatory a guarantee which would reflect the value of such a product. 



The definition of Feeding Cane Molasses as given by Association of Feed Con- 

 trol officials is "Feeding Cane Molasses is a by-product of the manufacture of 

 cane sugar from cane and shall contain 48 per cent or more of total sugars ex- 

 pressed as invert sugar. Its solution in an equal weight of water shall test not 

 less than 39.75 degrees Brix." 



In order to learn something more about the composition of molasses than is 

 ordinarily found in reference books, an extended analysis of nine samples found 

 in the Massachusetts markets has been made. The results follow. Their appli- 

 cation and interpretation is left to the feeding expert. 



