Table II.

Estimated Nutrient Requirements for Guinea Pigs^a

Nutrient	Nutrient/kg diet	Nutrient/kg body weight/day
Dry matter	900 gm	40 gm
Water	100 gm	100 ml total
Fiber	10–18%	4–7.2gm
Nitrogen-free extract	45–48%	18–19.2 gm
Protein	20–30%	8–12gm
L-Arginineb	1.6%
L-Tryptophan	0.2%
L-Sulfur amino acidsc	0.7%
Fatd
Methyl linoleate	0.4%
Calcium	1.0%	400 mg
Phosphate	0.6%	240 mg
Magnesiume	0.3%	120mg
Sodium	0.4%	160mg
Potassiumf	0.5%	200 mg
Manganese	40 mg	1.6 mg
Copper	6mg	0.25 mg
Iron	2.5 mg
Zincc	20 mg
Vitamin A acetate	8.0 mg	0.4 mg
Vitamin Dg	(0.04 mg)
Vitamin E	100mg	2.3 mg
Vitamin Kh	2 μg	0.09 μg
Vitamin C	200 mg	10 mg
Biotin	Not required
Choline	1500mg	60 mg
Folic acid	6mg	0.25 mg
Niacin	15 mg	0.6 mg
Pantothenic acid	15 mg	0.6 mg
Riboflavin	16 mg	0.64 mg
Thiamin	2mg	0.08 mg
Pyridoxine	3mg	0.12mg
Vitamin B12	Or cobalt required

^aApproximations based on information in Navia and Hunt (1976) and Reid and Bieri (1972).

^bWith 30% casein diet.

^cWith 30% soybean diet.

^dCorn oil.

^eHigher with elevated phosphate.

^fHigher if cation deficient.

^gNeeded if Ca:P inappropriate.

^hintestinal synthesis occurs: includes other B vitamins.