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WHAT TO FEED YOUR PIGGY
If you have noticed the cavy, it is usually munching on
something all the time.  The reason is, they metabolize their
food so quickly that if they don’t keep something in their
stomach it will cause gas production and intestinal bloating
(gastroenteritis) which can be extremely uncomfortable.  The
pain can then cause guinea pigs to refuse to eat, which in turn
leads to lethargy and will eventually lead to death.  


Oxbow’s Cavy Cuisine
It’s a timothy based pellet with stabilized vitamin C and chock
full of nutrition.  It has the least amount of fat as any that I
have seen on the market and better than most.  Hartz guinea
pig pellet has no less than 3% fat, Mazuri has no less than 4%,
while Cavy Cuisine has only 1.5%, thus your pigs will not get
near as obese.


Grass Hay
Hay is in their cage and available for them to eat at all times
because its one of the most important things in their diet.  It
provides fiber to aid in the digestion of their food, helps to grind
down their teeth and keeps them from getting gastroenteritis
(because it always provides them something to munch on).


Fruits and Vegetables
Available only because they like it, not because they need the
extra nutrition.  I believe that if they are fed a top of the line
pellet, its like feeding them vitamins.  They love their carrots
and lettuce, so they get a portion, plus a different fruit everyday.


There are, however, certain vegetables that
really shouldn't be fed to a pig
and this is why:

OXALIC ACID
When we eat foods that are high in oxalic acid, this oxalic acid
connects itself to other nutrients from our bodies, such as
sodium, magnesium, potassium, calcium and iron to produce
what is called oxalate, (otherwise known as salt).  This is why
when you sweat it tastes like salt.  High levels of oxalate in the
body (from foods that are rich in oxalic acid), can form tiny
crystals with sharp edges that can irritate the digestive system
and kidneys (which in turn forms kidney stones - the most
common type being calcium oxalate).  

Too much oxalic acid in your system can also unite with other
nutrients making the body unable to absorb them, thus leading
to nutritional deficiencies - especially calcium.

This very well could be why pregnant sows get hypocalcemia.

“foods such as spinach, rhubarb, peanuts, grapefruit, strawberries, wheat bran,
parsley and chives contain large amounts of oxalate and should be avoided.”
(quoted directly from the USDA)
 FOODS KNOWN TO HAVE HIGH AMOUNTS OF OXALIC ACID

Most berries (such as): cranberries, blackberries, blueberries and strawberries.

Most nuts (such as): cashews, almonds, peanuts and walnuts.

Vegetables:  green peppers, sweet potatoes, red and white cabbage, celery,
potatoes, beets, swiss chard, summer squash, mustard greens and most all beans.

*Popcorn, nuts and seeds should be avoided as well, because it’s the same
principle as feeding chicken bones to a dog.
*It might be best to avoid known gas producers such as cabbage, broccoli and
cauliflower or perhaps to be given as a treat once in a while.

If you have any question about the content of any one fruit or vegetable, please
consult the USDA Nutrient Data Lab or the
USDA Nutritional Content of Food
(pdf
-opens in new window), and don't go by word of mouth. You don’t know where
people get their information from and it’s quite possible that you are passing along
an untruth.