1. The department, in consultation with the office of attorney general, shall adopt rules necessary in order to administer this chapter.2. The department may establish different rules according to the species of livestock governing all of the following: a. Purchase reporting requirements pursuant to section 202A.2.b. Purchase notice posting requirements pursuant to section 202A.3.Future repeal of all or a portion of subsection 2 if substantially similar federal legislation or regulation is implemented; finding and order by secretary of agriculture; see 99 Acts, ch 88, §11