Fresh food should be the main source of food for guinea pigs, because it contains all the vital vitamins and minerals. A guinea pig needs about 100g – 300g of fresh food every day, no matter whether it is grass, fruits or vegetables.
Grass is an ideal food for guinea pigs but it should always be freshly picked, because otherwise it can ferment, which will cause diarrhoea for the guinea pig. Most herbs like camomile and flowers like daisies or dandelions, that grow among the grass are a welcome change and should be fed as well.
Other herbs that are healthy for guinea pigs are for example:
Fruit should be fed once a week at the most, because it contains fructose, which fattens the guinea pigs.
Among the digestible fruit are for example:
Vegetables should be the main source of fresh food for guinea pigs. A lot of different vegetables are available and guinea pigs love most of them.
The most popular vegetables for guinea pigs are:
- Lettuce (especially iceberg lettuce)
- Sweet pepper
- Tomatoes (the stem is poisonous, so remove it first)
Avocados should never be fed to them because they are poisonous for guinea pigs.