Hi,

To export spline curves, yes, Curves from Strands in the way to go. You can set the total amount of strands in Hair from Guides, that is the amount that will be exported. By "Export" I'm assuming that you mean export it outside of Maya. 

However, Alembic is a better alternative the curves in my opinion. You can export the groom as Ornatrix Alembic and import it anywhere alembic is supported. 

Jeordanis Figuereo (Product Designer. EPHERE Inc.)