Federal Register - October 20, 2021
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Source: Federal Register
58006
Federal Register / Vol. 86, No. 200 / Wednesday, October 20, 2021 / Rules and Regulations
lotter on DSK11XQN23PROD with RULES1
Chlortetracycline amount
Combination in grams/
ton
Indications for use
Limitations Melengestrol acetate Type C topdress medicated feed must be top dressed or mixed at feeding with the Type C medicated feed containing 20 to 350 g/ton chlortetracycline. Use in dairy heifers less than 20 months of age may cause drug residues in milk and/or in calves born to these cows. A withdrawal period has not been established for this product in pre-ruminating calves. Do not use in calves to be processed for veal. Chlortetracycline and melengestrol as provided by No. 054771 in 510.600c of this chapter.
Feed continuously at a rate of 30 to 75 mg laidlomycin propionate potassium per head per day. A withdrawal period has not been established for this product in pre-ruminating calves. Do not use in calves to be processed for veal. See 558.305d of this chapter.
Laidlomycin as provided by No.
054771 in 510.600c of this chapter.
Feed continuously at a rate of 30 to 75 mg laidlomycin propionate potassium per head per day. A withdrawal period has not been established for this product in pre-ruminating calves. Do not use in calves to be processed for veal. See 558.305d of this chapter.
Laidlomycin as provided by No.
054771 in 510.600c of this chapter.
Feed continuously in complete feed at a rate of 350 mg chlortetracycline and not less than 250 mg nor more than 360 mg lasalocid per head daily. Do not allow horses or other equines access to feeds containing lasalocid. No withdrawal period is required. A withdrawal period has not been established for this product in pre-ruminating calves. Do not use in calves to be processed for veal. See 558.311d of this chapter.
Lasalocid as provided by No.
054771 in 510.600c of this chapter.
Feed continuously in complete feed at a rate of 350 mg chlortetracycline and not less than 250 mg nor more than 360 mg lasalocid per head daily. Do not allow horses or other equines access to feeds containing lasalocid. No withdrawal period is required. A withdrawal period has not been established for this product in pre-ruminating calves. Do not use in calves to be processed for veal. See 558.311d of this chapter.
Lasalocid as provided by No.
054771 in 510.600c of this chapter.
xxix 20 to 350 g/ton to provide 350 mg/head/
day.
Melengestrol acetate, 0.5 to 2 g/ton to provide 0.5 mg melengestrol acetate per head per day.
Replacement dairy heifers less than 20 months of age and replacement beef heifers: For control of bacterial pneumonia associated with shipping fever complex caused by Pasteurella spp. susceptible to chlortetracycline and suppression of estrus heat.
xxx to provide 350 mg/
head/day.
Laidlomycin, 5
Cattle fed in confinement for slaughter: For control of bacterial pneumonia associated with shipping fever complex caused by Pasteurella spp. susceptible to chlortetracycline; and for increased rate of weight and improved feed efficiency.
xxxi to provide 350 mg/
head/day.
Laidlomycin, 5 to 10
Cattle fed in confinement for slaughter: For control of bacterial pneumonia associated with shipping fever complex caused by Pasteurella spp. susceptible to chlortetracycline; and for improved feed efficiency.
xxxii 25 to 42.2 g/ton to provide 350 mg/head/
day.
Lasalocid, 25 to 30
Cattle under 700 pounds fed in confinement for slaughter: For control of active infection of anaplasmosis caused by Anaplasma marginale susceptible to chlortetracycline;
and for increased rate of weight gain and improved feed efficiency.
xxxiii 25 to 42.2 g/ton to provide 350 mg/
head/day.
Lasalocid, 25 to 30
Cattle fed in confinement for slaughter: For control of bacterial pneumonia associated with shipping fever complex caused by Pasteurella multocida organisms susceptible to chlortetracycline;
and for increased rate of weight gain and improved feed efficiency.
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