(a) Specifications. Type A medicated articles containing 50 grams laidlomycin propionate potassium per pound.
(b) Approvals. See No. 054771 in Sec. 510.600(c) of this chapter.
(c) Tolerances. See Sec. 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:
(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: ----------------------------------------------------------------------------------------------------------------
Combination in grams
(1) 5............................ .................... For improved feed Feed continuously 054771
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 054771
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 054771
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 054771
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 054771
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 054771
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..---------------------------------------------------------------------------------------------------------------- [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; 79 FR 13545, Mar. 11, 2014]