This page is to explore the advantages and disadvantages of breeding guinea pigs as a source of meat, as is common practice in Andean countries.
According to this, one male is needed per twelve females. Each female can produce 10-15 young a year. That means one male and twelve females for a yield of 120-180 guinea pigs a year. They can be eaten at age 3-4 months. Big ones can be a little over 1kg. There was a concerted effort in the 1990s to develop a bigger meatier variety called the Raza Peru
This guide says, "one pair of cavies could produce about 260 new pairs in 2 years". This says, "Most Andean households kept at least 20 cuys; at that level, using a balanced feeding system, Andean families could produce at least 12 pounds of meat per month without decreasing their flock" (that's about equal to one meal of meat a day).
They eat foliage, long grasses, vegetable peels. A varied diet with lots of vitamin C is best
Bedding of straw, replaced weekly.
- http://www.backyardchickens.com/forum/viewtopic.php?id=233748&p=2 - Thread about raising guinea pigs for meat. Some cool pictures of guinea pig farming set-ups in Peru