In a large amount
vitamin d
vitamin d
Vitamin C
Guinea pigs must have a source of vitamin C in their diet. They are unable to synthesize their own.
Which vitamin? The disease present would vary based on what vitamin is in the diet, so you'll have to be more specific.
Yes the skin is capable of producting vitamin D in the presence of sunlight. It is the only vitamin that can be produced by the body itself. All others must come via diet. Even vitamin D must be supplemented in diet as well.
they do need it in their diet.
In humans, vitamin c.
magnesium, vitamin A, and Vitamin D
Try testing your vitamin D &B12 levels
Vitamin A, Vitamin D..protein, not too much cholesterol
rice is not a balanced diet, your body requires a varity of foods to balances micro nutrients ie zinc etc. but rice is missing vitamin d