Thank you, both. Oinker! Well, I never. Louisiana = LA.
Here's another, using the K from OIL TANKER:
Part of a charger alien inserted into sheep (7).
- - - - O - K
Again I don't get the workings but could this be the name of a breed of sheep, something like SUFFOLK or NORFOLK or MATLOCK?
Or is it something different entirely?