Teal'cs age always bugged me. Supposedly, he's not much younger than Bra'tac and that just scream wrong to me. And when you watch Material Instinct, you get this vibe that Bra'tac is nearing the end of his life, but then again he's not all that much older than Teal'c.

So either someonje is lying...

My take on it is that Jaffa live a fairly long time. Bra'tac kept hinting before he took tretonin that he wouldn't be able to carry a symbiote much longer, but we don't know what his concept of time is. I saw there is a difference between the two :)