M. R., Damanik, Siti, N. W., AND Sukmawati, N. M. S.. " THE EFFECT OF REPLACEMENT COMMERCIAL RATION WITH BREAD WASTE ON COMMERCIAL CARCASS PIECES OF KAMPUNG UNGGUL BALITNAK (KUB) CHICKENS" Jurnal Peternakan Tropika [Online], Volume 10 Number 2 (15 May 2022)