MARKETING EFFICIENCY ANALYSIS OF BEEF CATTLE IN ANIMAL MARKET SUKA VILLAGE TIGAPANAH SUBDISTRICT KARO DISTRICT - Sidebang, A A; Animal Production Study Program, Faculty of Agriculture, University of Sumatera Utara, Indonesia (Program Studi Peternakan Fakultas Pertanian USU Medan (Dept. of Animal Science, Faculty of, 2017)