And I believe Teresa Murphy has some advice on how to do introductions on her www.cavyspirit.com site if you look in the left hand column. Might be called "social life".
It can be done. I never had to worry about it myself (only one girl introduced to a pair and they worked it out before too long). If you read other people´s experiences and advice, you´ll have more to go on.
- For the love of my girls!
I introduced (2) 3 month old sows to another 3 month old sow and there was some chattering etc. for a few days. Only a few times I tossed a towel on them. It wasn´t too bad.
Then I introduced a 3 month old to the herd of now (3) 4 month olds. NO problems at all.
Then I tried to introduce and adult sow to the herd when the others sows were about 9 months old. NO WAY!! Blood drawn and the whole bit. I tried several times over 2 days but it clearly was not going to work.
Then I introduced a 5 week old to the herd of 1 year old sows and NO PROBLEMS at all.
So... in my experience, age makes a big difference. Older and younger combos work. Older and older combos did not.
- My home, ruled by pigs!
The first time I had to do it I left them in there for 8hrs and it worked. The second time was 4hrs.