Table 1.

Compositions of experimental diets.

	14% CN diet (AIN-93M)	10% CN diet	5% CN diet
[INGREDIENT]	(g/kg diet)
Casein	140	100	50
L-Cystine	1.80	1.28	0.64
Cornstarch	466	465	423
Dextrinized cornstarch	155	195	286
Sucrose	100	100	100
Cellulose	50	50	50
Soybean oil	40	40	40
t-Butylhydroquinone	0.008	0.008	0.008
AIN-93M mineral mixture	35	35	35
Mono-calcium phosphate a	–	1.0	3.0
AIN-93 vitamin mixture	10	10	10
Choline bitartrate	2.5	2.5	2.5
[NUTRIENTS]	(g/kg diet)
Energy b	14,790	14,790	14,786
Protein	127.4	91.4	46.4
Fat	43.5	43.4	43.0
Fiber	50.2	50.1	50.0

^aDecreased calcium content, accompanied by lower casein content, was compensated by adding mono-calcium phosphate.

^b(kJ/kg diet).