"Baby alpaca" is not used as an adjective for a young cria in the textile world, it refers to the fineness of the fleece an alpaca - even if that alpaca is10 years old.
Royal Alpaca - finer than 18 microns
Super Fine / Baby Alpaca - finer than 20 microns
Fine - finer than 25 micron
Medium - under 30 micron
Strong - 30 microns and greater
Mixed Pieces - short fibers, coarser than 32 microns - used for felting
Hopefully this helps anyone wondering about this topic as I did years ago.
Feel free to contact us with any quesitons.