From the White Wolf Wiki, the most complete White Wolf reference

kine: domesticated bovine animals as a group regardless of sex or age; "so many head of cattle"; "wait till the cows come home"; "seven thin and ill-favored kine"- Bible; "a team of oxen"

Kine is a somewhat archaic and derogatory term used by the Kindred to refer to mortals. The term kindred and kine refers to all the people of the world. The archaic singular (kow) isn't used.