VERSAILLES, Ky. (AP) _ William Shatner's ex-wife has sued him for breach of contract over breeding privileges of three American saddlebred stallions.

Marcy Lafferty Shatner claims in her civil lawsuit that her ex-husband broke an agreement in their 1995 divorce settlement that allowed her one breeding privilege per calendar year.

The lawsuit says that until this breeding season, the ``Star Trek'' star provided Lafferty the semen of one of the horses, Great Day's Came the Son, in ``fresh cooled format.'' In March, the lawsuit says, Lafferty learned the breeding privileges from that horse and two other stallions would be in the form of frozen semen.

``Mr. Shatner's offer to provide semen from the three stallions in question in frozen form is unacceptable to Ms. Lafferty,'' says the lawsuit, filed in late April in Woodford County Circuit Court. ``Potential buyers of the breeding privileges do not want the semen in frozen format.''

The 72-year-old actor has owned central Kentucky horse farms since the mid-1980s and has homes in Lexington and Studio City, Calif. As of Tuesday, he hadn't responded to the lawsuit.

This isn't Shatner's first legal entanglement involving horse breeding. In 1990, a former associate sued him over breeding rights to a world champion fine harness horse. Shatner won that case in Fayette County Circuit Court.