Where I come from (Cornwall), the standard pig call is "Hoke! Hoke!"
I tried this in California and the pigs responded.
Obviously, a great deal more research is needed. Are pigs naturally multilingual? Do 'Hoke' and 'Soooeeee' (the latter the normal spelling in upstate New York, where my wife comes from) mean the same thing in Pig? Or are there subtle gradations of meaning?
Oh, yeah; and I always thought 'baby pigs' were called 'piglets'.
Interesting. The sports teams at Virginia Tech are called Hokies, the etymology of which has long been obscured. Seems appropriate for an agricultural college, however.