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Federal Register / Vol. 86, No. 52 / Friday, March 19, 2021 / Rules and Regulations
Oxytetracycline amount
Indications for use
Limitations
Freshwater-reared Oncorhynchus mykiss: For control of mortality due to columnaris disease associated with Flavobacterium columnare.
3. Freshwater-reared salmonids weighing up to 55 grams: For marking the skeletal tissue.

Administer in mixed ration for 10 days. Do not liberate fish or slaughter fish for food for 21 days following the last administration of medicated feed..

066104

Feed for 10 days. Immediate release is permitted following last feeding of medicated feed..

066104

2.

558.465

Removed

90. In 558.485, revise paragraph b introductory text to read as follows:

558.500

558.550

Pyrantel.

a Specifications. Each molassesbased block contains 2.2 percent polyoxyethylene 23 lauryl ether.
b Sponsor. See No. 067949 in 510.600c of this chapter.
c Reserved d Conditions of use1 Amount. 2
grams of polyoxyethylene 23 lauryl ether per 100 kilograms of body weight per day 1 pound of block per 500
kilogram 1,100 pound animal per day.
Initially, provide one block per five head of cattle. Start treatment 10 to 14
days before exposure to bloat-producing pastures.
2 Indications for use. For reduction of the incidence of bloat alfalfa and clover in pastured cattle.
3 Limitations. Administer freechoice to beef cattle and nonlactating dairy cattle only. Do not allow cattle access to other sources of salt while being fed this product. Do not feed this product to animals without adequate forage/roughage consumption.

b Sponsors. See sponsors in 510.600c of this chapter for use as follows:

91. In 558.500, revise paragraph b to read as follows:

558.485

Polyoxyethylene.

93. In 558.550:
a. Revise paragraphs a, b, e1i, and e2i;
b. Add a heading for paragraph e3;
c. Redesignate paragraphs e3i through iv as paragraphs e3ii through v; and d. Add new paragraph e3i.
The revisions and additions read as follows:

88. Remove 558.465.
89. Add 558.470 to read as follows:

558.470

Sponsor
Ractopamine.

b Sponsor. See Nos. 054771 and 058198 in 510.600c of this chapter.

92. In 558.515:
a. Revise paragraph a;
b. Redesignate paragraphs b, d, and e as paragraphs d, e, and f; and c. Add new paragraph b.
The revision and addition read as follows:
558.515

Robenidine.

a Specifications. Type A medicated articles containing 30 grams per pound.
b Sponsor. See No. 054771 in 510.600c of this chapter.

Salinomycin.

a Specifications. Type A medicated articles containing:
1 30 grams of salinomycin sodium activity per pound; or 2 60 grams of salinomycin sodium activity per pound.
b Sponsors. See sponsors in 510.600c of this chapter as follows:
1 No. 016592 for product described in paragraph a1 of this section.
2 Nos. 016592 and 069254 for product described in paragraph a2 of this section.

e
1

Salinomycin in grams/ton
Combination in grams/ton
Indications for use
Limitations
i 40 to 60

Broiler, roaster, and replacement breeder and layer chickens: For the prevention of coccidiosis caused by Eimeria tenella, E.
necatrix, E. acervulina, E. maxima, E. brunetti, and E. mivati.

Feed continuously as sole ration. Do not feed to birds producing eggs for human consumption. May be fatal if accidentally fed to adult turkeys or horses..

Sponsor

016592
069254

2
Salinomycin in grams/ton
Combination in grams/ton
Indications for use
Limitations
i 50

Quail: For the prevention of coccidiosis caused by Eimeria.
dispersa and E. lettyae.

Feed continuously as sole ration. Do not feed to birds producing eggs for human consumption. May be fatal if accidentally fed to adult turkeys or horses..

jbell on DSKJLSW7X2PROD with RULES

3 Combinations.
i Avilamycin as in 558.68.

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94. In 558.555, revise paragraph b to read as follows:

PO 00000

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Sponsor
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558.555

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Semduramicin.

19MRR1

016592
069254