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Federal Register / Vol. 86, No. 200 / Wednesday, October 20, 2021 / Rules and Regulations Bacitracin in grams per ton
Indications for use
Limitations
ii 250

Growing and finishing swine: For control of swine dysentery bloody scours associated with Brachyspira hyodysenteriae in pigs up to 250 lbs body weight.

iii 250

Pregnant sows: For control of clostridial enteritis caused by Clostridium perfringens in suckling piglets.

Feed as the sole ration. Feed 250 grams per ton of complete feed on premises with a history of swine dysentery, but where signs of the disease have not yet occurred or following an approved treatment of the disease condition. Diagnosis should be confirmed by a veterinarian a when results are not satisfactory.
As the sole ration. Feed to sows from 14 days before through 21 days after farrowing on premises with a history of clostridial scours. Diagnosis should be confirmed by a veterinarian when results are not satisfactory.

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4 Cattle Bacitracin amount
Indications for use
i 70 mg per head per day.

Limitations
Beef steers and heifers fed in confinement for slaughter: For reduction in the number of liver condemnations due to abscesses.
Beef steers and heifers fed in confinement for slaughter: For reduction in the number of liver condemnations due to abscesses.

ii 250 mg per head per day.

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Administer continuously throughout the feeding period.

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Administer continuously for 5 days then discontinue for subsequent 25 days, repeat the pattern during the feeding period.

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5 Game birds Bacitracin in grams per ton
Indications for use
Limitations
i 4 to 50

Growing pheasants: For increased rate of weight gain and improved feed efficiency.
Growing quail: For increased rate of weight gain and improved feed efficiency in quail not over 5 weeks of age.
Growing quail: For the prevention of ulcerative enteritis in growing quail due to Clostridium colinum susceptible to bacitracin methylenedisalicylate.

Feed continuously as sole ration

ii 5 to 20
iii 200

558.128

30. In 558.128, revise paragraphs d4 and e4 to read as follows:

lotter on DSK11XQN23PROD with RULES1

Chlortetracycline amount
Feed continuously as sole ration to quail not over 5
weeks of age.

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Feed continuously as the sole ration

054771

Chlortetracycline.

d
4 Manufacture for use in free-choice feeds as in paragraph e4vi of this
Combination in grams/
ton
Limitations

Growing cattle over 400 lb: For reduction of liver condemnation due to liver abscesses.

ii 5.83 to 14 g/ton to provide 70 mg/head/
day.

Melengestrol acetate, 0.25 to 2 g/ton to provide 0.25 to 0.5 mg melengestrol acetate per head per day.

Growing beef heifers fed in confinement for slaughter over 400 lb:
For reduction of the incidence of liver abscesses, increased rate of weight gain, improved feed efficiency, and suppression of estrus heat.

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section must conform to 510.455 of this chapter.

e
4

Indications for use
i to provide 70 mg/
head/day.

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Feed to provide chlortetracycline at the rate of 70 mg per animal daily.
A withdrawal period has not been established in pre-ruminating calves. Do not use in calves to be processed for veal.
Melengestrol acetate Type C topdress medicated feed must be top dressed onto or mixed at feeding with the Type C medicated feed containing 5.83 to 14 g/ton chlortetracycline. Chlortetracycline and melengestrol as provided by No.
054771 in 510.600c of this chapter.

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