disposal technology installation credit determined under section 45S(a), plus (38) the swine waste disposal credit determined under section 45T(a). . (c) Deduction for Unused Credit Subsection (c) of section 196 of such Code is amended by striking and at the end of paragraph (13), by striking the period at the end of paragraph (14) and inserting a comma, and by adding at the end the following new paragraphs: (15) the swine waste disposal technology installation credit determined under section 45S(a), and (16) the swine waste disposal credit determined under section 45T(a). . (d) Deduction against AMT Subparagraph (B) of section 38(c)(4) of such Code is amended by striking and at the end of clause (viii), by striking the period at the end of clause (ix) and inserting a comma, and by adding at the end the following new clauses: (x) the credit determined under section 45S, and (xi) the credit determined under section 45T. . (e) Clerical Amendment The table of sections for subpart D of part IV of subchapter A of chapter 1 of the such Code is amended by adding at the end the following new items: Sec. 45S. Swine waste disposal technology installation credit. Sec. 45T. Swine waste disposal credit. . (f) Effective date The amendments made by this section shall apply to amounts paid or incurred and swine waste disposed of after December 31, 2017. 8. Swine farm defined In this Act, the term swine farm means a tract of land devoted to raising 250 or more animals of the porcine species.