Va. Code § 43-43
A person owning a bull in this Commonwealth shall have a lien on the get of such bull for the period of six months from the date of the birth of such get, for the price agreed upon between him and the owner of any cow served by such bull; however, this lien shall not hold good as against an innocent purchaser for value and without notice, except when the lien has been admitted to record, which may be done in the following form:
..................... (giving the name of the owner of the bull) versus...
(giving the name of the owner of the calf). The owner of the bull claims a lien on a calf less than six months old for $................, for the get thereof.
It shall be the duty of the clerk of the county in which the calf is calved to place the same on record in the miscellaneous lien book.
Va. Code § 43-43