Vitamin	Natural-ingredient, open-formula diet e	Purified dietf	Purified dietg	Chemically defined diet h
A (IU/kg)	15, 000	4000	1100	1730
B6 (mg/kg)	10	7	22.5	6.0
B12 (mg/kg)	0.03	0.01	0.023	0.58
D (IU/kg)	5000	1000	1100	1.71
E (IU/kg)	37	50	32	1514
KI equiv. (mg/kg)	3	0.05	18	10.7
Biotin (mg/kg)	0.2	0.2	0.2	1
Choline (mg/kg)	2009	1000	750	2375
Folacin (mg/kg)	4	2	0.45	1.43
Inositol (mg/kg)	−	−	−	248
Niacin (mg/kg)	82	30	22.5	35.6
Calcium pantothenate (mg/kg)	21	16	37.5	47.5
Riboflavin (mg/kg)	8	6	7.5	7.1
Thiamin (mg/kg)	17	6	22.5	4.8

^aModified from Knapka (1983).

^bLinoleic acid: 0.6% is adequate.

^cJohn and Bell (1976).

^dTheuer (1971).

^eKnapka et al. (1974).

^fAIN (1977).

^gHurley and Bell (1974).

^hpleasants et al. (1973).