What you are feeding your pig are not veggies that should be fed everyday, especially carrots. Carrots have little nutritional value and feeding in overdose can cause organ failure! You're feeding them way too many carrots, and broccoli is not suppose to be fed so often. You should only feed it 2-4 times per week. Some great veggies to feed everyday are: Lettuce, parsley, green bell peppers, and Cilantro. One baby carrot a day per pig is ok, just not more than one. Here is a great veggie chart that shows how much of each food you can feed a day:
http://www.guineapigcages.com/forum/...arts-info.html
Also, you should feed one pig about a cup of veggies a day, so two cups for you, since you have wo pigs. Hope that helps!!