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Federal Register / Vol. 86, No. 43 / Monday, March 8, 2021 / Rules and Regulations Avilamycin in grams/ton
Combination in grams/ton

ii 13.6 to 40.9

Monensin, 90 to 110.

iii 13.6 to 40.9

Narasin, 54 to 90

v 13.6 to 40.9

Salinomycin sodium, 40 to 60.

Indications for use
Limitations

Broiler chickens: For the prevention of mortality caused by necrotic enteritis associated with Clostridium perfringens; and as an aid in the prevention of coccidiosis caused by Eimeria necatrix, E. tenella, E. acervulina, E.
brunetti, E. mivati, and E. maxima.
Broiler chickens: For the prevention of mortality caused by necrotic enteritis associated with Clostridium perfringens; and for the prevention of coccidiosis caused by Eimeria necatrix, E. tenella, E.
acervulina, E. brunetti, E. mivati, and E. maxima.

Feed as the sole ration for 21 consecutive days. To assure responsible antimicrobial drug use in broiler chickens, treatment administration must begin on or before 18 days of age. See 558.355d of this chapter. Monensin as provided by No. 058198 in 510.600c of this chapter.

Broiler chickens: For the prevention of mortality caused by necrotic enteritis associated with Clostridium perfringens; and for the prevention of coccidiosis caused by Eimeria tenella, E. necatrix, E.
acervulina, E.
maxima, E.
brunetti, and E. mivati.

Feed as the sole ration for 21 consecutive days. Feed to chickens that are at risk of developing, but not yet showing clinical signs of, necrotic enteritis associated with Clostridium perfringens. Not approved for use with pellet binders. To assure responsible antimicrobial drug use in broiler chickens, treatment administration must begin on or before 18 days of age. The safety of avilamycin has not been established in chickens intended for breeding purposes. Avilamycin has not been demonstrated to be effective in broiler chickens showing clinical signs of necrotic enteritis prior to the start of medication. Do not feed to laying hens producing eggs for human consumption. May be fatal if fed to adult turkeys or to horses. Salinomycin as provided by No. 016592 in 510.600c of this chapter.

558.128

54. In 558.128, revise paragraphs e4xv and xvi to read as follows:
Chlortetracycline amount
Combination in grams/ton

xv 350 mg/head/
day.

xvi 20 to 350 g/
ton.

To sponsor No. 054771 under NADAs 046699 and 049287, No.
066104 under NADA 092286, and No. 069254 under NADA 048
480: withdraw 48 hours prior to slaughter. To sponsor No. 069254
under NADA 138935 and ANADA 200510: zero withdrawal period.

55. In 558.140, revise paragraph b1, redesignate paragraph b2 as paragraph b3, add new paragraph b2, and revise paragraph e1.
The revisions and addition read as follows:

jbell on DSKJLSW7X2PROD with RULES

Jkt 253001

558.140 Chlortetracycline and sulfamethazine.

b
1 No. 054771 for use of product described in paragraph a1 as in paragraph e1 of this section.

Frm 00041

058198

Sponsor
Withdraw 48 hours prior to slaughter. To sponsor No. 054771 under NADAs 046699 and 049287, No. 066104 under NADA 092286, and No. 069254 under NADA 048480: withdraw 48 hours prior to slaughter. To sponsor No. 054771 under NADA 048761 and No.
069254 under NADA 138935 and ANADA 200510: zero withdrawal time.
Feed to provide chlortetracycline at the rate of 350 mg per head per day. This drug is not approved for use in female dairy cattle 20
months of age or older, including dry dairy cows. Use in these cattle 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. To sponsor No. 054771 under NADA 048761 and No. 069254
under ANADA 200510: zero withdrawal period.

PO 00000

058198

4

1. Beef cattle: For control of bacterial pneumonia associated with shipping fever complex caused by Pasteurella spp. susceptible to chlortetracycline.
2. Beef cattle under 700 lb: For control of active infection of anaplasmosis caused by A.
marginale susceptible to chlortetracycline.
Beef cattle and replacement dairy heifers: For control of bacterial pneumonia associated with shipping fever complex caused by Pasteurella spp. susceptible to chlortetracycline.

058198

Limitations

16:10 Mar 05, 2021

Indications for use

VerDate Sep<11>2014

Feed as the sole ration for 21 consecutive days to chickens that are at risk of developing, but not yet showing clinical signs of, necrotic enteritis associated with Clostridium perfringens. To assure responsible antimicrobial drug use in broiler chickens, treatment administration must begin on or before 18 days of age. Do not allow adult turkeys, horses, or other equines access to narasin formulations. Ingestion of narasin by these species has been fatal. Narasin as provided by No.
058198 in 510.600c of this chapter.

Chlortetracycline.

e

Sponsor
Fmt 4700

Sfmt 4700

054771
069254

054771
069254

054771
069254

2 No. 069254 for use of product described in paragraph a1 as in paragraph e1i of this section.

e
1 Cattle
E:FRFM08MRR1.SGM

08MRR1