21 C.F.R. § 558.305 Laidlomycin.
Title 21 - Food and Drugs
(a) Specifications. Type A medicated articles containing 50 grams laidlomycin propionate potassium per pound. (b) Approvals. See No. 046573 in §510.600(c) of this chapter. (c) Tolerances. See §556.346 of this chapter. (d) Special considerations. (1) Laidlomycin liquid Type B feeds may be manufactured from dry laidlomycin Type A articles. The liquid Type B feeds must have a pH of 6.0 to 8.0, dry matter of 62 to 75 percent, and bear appropriate mixing directions as follows: (i) For liquid feeds stored in recirculating tank systems: Recirculate immediately prior to use for no less than 10 minutes, moving not less than 1 percent of the tank contents per minute from the bottom of the tank to the top. Recirculate daily as described even when not used. (ii) For liquid feeds stored in mechanical, air, or other agitation type tank systems: Agitate immediately prior to use for not less than 10 minutes, creating a turbulence at the bottom of the tank that is visible at the top. Agitate daily as described even when not used. (2) The expiration date for the liquid Type B feed is 21 days after date of manufacture. The expiration date for the dry Type C feed made from the liquid Type B feed is 7 days after date of manufacture. (3) Labeling for all Type B feeds (liquid and dry) and Type C feeds containing laidlomycin shall bear the following statements: (i) Do not allow horses or other equines access to feeds containing laidlomycin propionate potassium. (ii) The safety of laidlomycin propionate potassium in unapproved species has not been established. (iii) Not for use in animals intended for breeding. (e) Conditions of use. It is used in cattle being fed in confinement for slaughter as follows: [59 FR 18297, Apr. 18, 1994, as amended at 60 FR 53509, Oct. 16, 1995; 62 FR 9929, Mar. 5, 1997; 63 FR 27845, May 21, 1998; 66 FR 46706, Sept. 7, 2001; 68 FR 13839, Mar. 21, 2003; 68 FR 42590, July 18, 2003; 69 FR 30198, May 27, 2004]
Title 21: Food and Drugs
PART 558—NEW ANIMAL DRUGS FOR USE IN ANIMAL FEEDS
Subpart B—Specific New Animal Drugs for Use in Animal Feeds
§ 558.305 Laidlomycin.
---------------------------------------------------------------------------------------------------------------- Combination in grams Laidlomycin in grams per ton per ton Indications for use Limitations Sponsor----------------------------------------------------------------------------------------------------------------(1) 5............................ .................... For improved feed Feed continuously 046573 efficiency and in a Type C feed increased rate of at a rate of 30 to weight gain.. 75 mg/head/day..(2) 5............................ Chlortetracycline10 For improved feed Feed continuously 046573 mg/lb body weight. efficiency and at a rate of 30 to increased rate of 75 mg laidlomycin weight gain; and for propionate treatment of bacterial potassium per head enteritis caused by per day for not Echerichia coli and more than 5 days. bacterial pneumonia A withdrawal caused by Pasteurella period has not multocida organisms been established susceptible to for this product chlortetracycline.. in pre-ruminating calves. Do not use in calves to be processed for veal..(3) 5............................ Chlortetracycline For improved feed Feed continuously 046573 350 mg/head/day. efficiency and at a rate of 30 to increased rate of 75 mg laidlomycin weight gain; and for propionate control of bacterial potassium per head pneumonia associated per day. A with shipping fever withdrawal period complex caused by has not been Pasteurella spp. established for susceptible to this product in chlortetracycline.. pre-ruminating calves. Do not use in calves to be processed for veal..(4) 5 to 10...................... .................... For improved feed Feed continuously 046573 efficiency.. in a Type C feed at a rate of 30 to 150 milligrams/ head/day..(5) 5 to 10...................... Chlortetracycline 10 For improved feed Feed continuously 046573 mg/pound body efficiency; and for at a rate of 30 to weight. treatment of bacterial 150 mg laidlomycin enteritis caused by E. propionate coli and bacterial potassium per head pneumonia caused by P. per day for not multocida organisms more than 5 days. susceptible to A withdrawal chlortetracycline.. period has not been established for this product in pre-ruminating calves. Do not use in calves to be processed for veal..(6) 5 to 10...................... Chlortetracycline For improved feed Feed continuously 046573 350 mg/head/day. efficiency; and for at a rate of 30 to control of bacterial 150 mg laidlomycin pneumonia associated propionate with shipping fever potassium per head complex caused by per day. A Pasteurella spp. withdrawal period susceptible to has not been chlortetracycline.. established for this product in pre-ruminating calves. Do not use in calves to be processed for veal..----------------------------------------------------------------------------------------------------------------
