it appears you may be right
http://animalscience.calpoly.edu/areas_of_study/beef/
they didn't have them for a while and when i talked with Mike Hall a few years ago, they didn't have them then. they also got rid of their horned herefords and they also appear to sell some composite bulls as well. it also says they have amerifax influence cows as well. that's a new one on me too. don't know when this page was last updated.
there are two cal poly's, one in san luis obispo, and cal poly pomona. supposedly there's some famous arabians at pomona.