DreamWorks Animation will lay off 170 employees at its Glendale campus in January as the studio continues to be integrated into NBCUniversal following its acquisition early this year by Comcast Corp. The staffing cuts come two months after DreamWorks eliminated 200 positions in the corporate office and in its distribution and consumer products operations. The Glendale film and television studio in August closed on its $3.8 billion sale to Comcast and is now part of NBCUniversal’s Universal Filmed Entertainment Group. The latest round of layoffs includes positions in the DreamWorks film animation group, according to a source familiar with the situation. Universal Filmed Entertainment is in the process of film slate planning and some staff cuts were due to cancellation of the animated film “The Croods 2,” the source said. “This is separate from the positions eliminated earlier in the year in corporate functional areas,” the source added.