That's incorrect, many in-game books have stated that elves breed far slower than humans and live longer. We have evidence showing the both the Dunmer and the Falmer bred a lot slower than humans, also a statement that Mer themselves had far less children. It's nothing to do with reproduction, Barenziah slept around A LOT and she barely ever got pregnant. The chances of them producing offspring from intercourse are obviously far lower than when humans have intercourse, they also live a lot longer, which would usually balance things out in normal circumstances, however in war it's a MAJOR weakness.
What's this about Goblin slaves ? Is this confirmed ?
I never said Elves didn't live longer, but what books provide evidence that Elves have a naturally lower chance of becoming pregnant? Debellain followers tend to be complete [censored]s and they almost never become pregnant, clearly contraceptives exist and there is no indication that they are not used by the Mer as well. Barenzia became pregent with the Emporor's daughter during their first meeting, who inturn had a child of her own pretty early into her life, but these are also the Dunmer we are talking about, a cursed race.
[img]http://images.uesp.net/e/eb/ALL-Demographics.jpg[/img]
I found this, its a demographic ratio of the racial makeup in Tamriel based on the Elder Scrolls games thus far, 4 games set in Human provinces, and one set in an Elven province, with Arena being spread around.
Yes, they have had Goblin slaves (pets if you ask them) since at least the 2nd age, and according to the Tribunal they used them in war. (we can see their (goblins) cababilites in the Morrowind expansion too) There is no metion of them being used in the great war, but details like that are non-existant anyways and I can't see it as being illogical for the Domonion to use them as they had in the past.