Section 520.154c - Bacitracin zinc soluble powder(a)Specifications. Each pound contains the equivalent of not less than 5 grams of bacitracin.(b)Sponsor. See No. 054771 in § 510.600(c) of this chapter.(c)Related tolerances. See § 556.70 of this chapter.(d)Conditions of use - (1)Broiler chickens - (i)Amount. 100 milligrams per gallon in drinking water.(A)Indications for use. Prevention of necrotic enteritis caused by Clostridium perfringens susceptible to bacitracin zinc.(B)Limitations. Prepare a fresh solution daily.(ii)Amount. 200 to 400 milligrams per gallon in drinking water. (A)Indications for use. Control of necrotic enteritis caused by Clostridium perfringens susceptible to bacitracin zinc.(B)Limitations. Prepare a fresh solution daily.(2)Growing quail - (i)Amount. 500 milligrams per gallon in drinking water for 5 days followed by 165 milligrams per gallon in drinking water for 10 days.(ii)Indications for use. Control of ulcerative enteritis caused by Clostridium spp. susceptible to bacitracin zinc.(iii)Limitations. Prepare a fresh solution daily.57 FR 37322, Aug. 18, 1992, as amended at 67 FR 78355 , Dec. 24, 2002; 79 FR 28818 , May 20, 2014