My personal go-to when it comes to Italian zombie flicks is Fulci's Zombi 2, but Burial Ground still has solid gore and a great zombie design. As expected, the story is a bit thin (that's the zombie sub-genre for you, though), but there's great gore and very, shall we say interesting, scenes of carnal nature.
What do you think about this Italian zombie flick?
(http://www.fight-evil.com/movies/years/1981/557-1.jpg)