what guinea pigs can and can NOT eat!

[mstori]

whilst looking up if guinea pigs can eat leeks, parsnip suede .. which i found out leeks they CANT! and suede and parsnip YES.. but then on other sites it said no to all... then found this site:
http://www.squidoo.com/guinea-pig-care-4
it says NO to cauliflower and cabbage... help! mine had both last night cos i had seen on other sites both were fine to give... can anyone advise? thanks
Now I'm a bit confused cos the more I look, dedicated guinea pig advice sites have conflicting advice..

 

[KingBoris&HisFollowers]

i feed cauilflour leaves and occasional cabbage,i know cabbage in high amounts can cause tummy upsets but members have told me that both are ok ca someone enlighten us if i am wrong?

 

[mstori]

i give mine cabbage, just a little bit, once a week.. and i give them a full floret of cauli..
The net can be a wonderful thing but highly annoying when you get different info AFTER you have done something :{ x

 

[Laura-CCC4]

Cabbage - Fine
Cauliflower and leaves - Fine
Parsnip - Fine
Swede - Fine
Leeks - the green tips only.

Some places are iffy about cabbage and cauliflower because both can be a bit gassy. A few piggies can be very sensitive to gas build-ups, but most have no issues with such foods. They are perfectly safe to feed, but as with everything, feed it in moderation. If you're going to give cabbage daily, give just a little, say a third of a leaf.

Parsnip is fairly high in sugars I think, similarly swede should also be fairly limited in its inclusion in the diet. Leek tops make good treats.

There is so much conflicting advice around. I have found that the best place to get the right info is on a forum. Majority advice gets my vote, I can trust the advice more if lots of people are saying they have personal experience of the topic in question.