The Uniform Rules of Practice for the Department of Agriculture promulgated in Subpart H of Part 1, Subtitle A, Title 7, Code of Federal Regulations, are the Rules of Practice applicable to adjudicatory, administrative proceedings under the Packers and Stockyards Act, as amended (7 U.S.C. § 181 et seq.). In addition, the Supplemental Rules of Practice set forth in this part shall be applicable to such proceedings.