/I/ Crude. /2/ O.OOO6 mg p-csurjtene = one I. U. /?/ A generic term including cyancobalamln (vitamin ^12^, and its hy- 

 drogenation product (known variously as Bi2a °^ ^lab' >'''i<='' ^^^ approximately the same biological activity. /U/ 0.Ce5 

 Hg crystalline D5 (7-dehydrochole8terol) = one I. U. /5/ A generic tern for alpha-, beta-, delta-, and gamna-tocoi^erols. 

 /6/ Folic acid is not a chemical entity, but a generic term for pteroylglutamlc acid (folacin), vitamin M, vitamin B_, 

 factor U, L. easel factor, Norlte eluate factor. /7/ The anti-henorrhaglc factor. A generic term for vitamin K^ (2- 

 methyl-}-phytyl-l,lt-naphthoquinone), synthetic vitamin K (menadione = 2-methyl-l,l»-naphthoqulnone) and vitamin Ko (2- 

 methyl-}-dlfamesyl-l,U-naphthoquinone). /8/ The term is used here as a generic term for nicotinic acid (niacin) and 

 nicotinic acid amide (nicotinamide); also for pellagra preventive (P. P.) factor, antl-blacktongue factor. /9/ Includes 

 pyridoxine, pyridoxtil, and pyrldoxamine . /lO/ Represents chlorine added, as NaCl, to the diet, in addition to any CI 

 present in association with other nutrients. /n/ Chlorine, rather than sodium, may be the limiting factor in practi- 

 cal poultry feeds. /12/ At least two-fifths of this requirement should be supplied as Inorganic PO^. /I5/ Represents 

 sodium in added NaCl (cf Fn 10). 



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