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Federal Register / Vol. 86, No. 200 / Wednesday, October 20, 2021 / Rules and Regulations Chlortetracycline amount
Combination in grams/
ton
Indications for use
Limitations
xvi 500 to 4,000 g/ton ..

Calves, beef and nonlactating dairy cattle: For the treatment of bacterial enteritis caused by Escherichia coli and bacterial pneumonia caused by Pasteurella multocida susceptible to chlortetracycline.

xvii 500 to 4,000 g/ton
Decoquinate, 12.9 to 90.8.

Calves, beef and non-lactating dairy cattle: For the treatment of bacterial enteritis caused by Escherichia coli and bacterial pneumonia caused by Pasteurella multocida organisms susceptible to chlortetracycline; and for the prevention of coccidiosis caused by Eimeria bovis and E. zuernii.

xviii 500 to 4,000 to provide 10 mg per pound of body weight.

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: For the treatment of bacterial enteritis caused by Escherichia coli and bacterial pneumonia caused by Pasteurella multocida organisms susceptible to chlortetracycline, increased rate of weight gain, improved feed efficiency, and suppression of estrus heat.

xix 500 to 4,000 to provide 10 mg per pound of body weight.

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 the treatment of bacterial enteritis caused by Escherichia coli and bacterial pneumonia caused by Pasteurella multocida organisms susceptible to chlortetracycline, and for suppression of estrus heat.

Hand feed continuously for not more than 5 days to provide 10 mg/lb body weight 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. To sponsor No.
054771 under NADA 046699: 24hour withdrawal period. To sponsor No. 054771 under NADA 048761
and No. 069254 under ANADA
200510: Zero withdrawal period.
Feed at a rate of 1g chlortetracycline per 100 lb body weight/day and 22.7 mg decoquinate per 100 lb of body weight/day for not more than 5 days. When it is fully consumed, resume feeding 22.7 mg decoquinate per 100 lb of body weight/day for a total of 28 days to prevent coccidiosis. A withdrawal period has not been established for this product in pre-ruminating calves. Do not use in calves to be processed for veal. Do not feed to animals producing milk for food.
Decoquinate as provided by No.
054771 in 510.600c of this chapter.
Melengestrol acetate Type C topdress medicated feed must be top dressed onto or mixed at feeding with a Type C medicated feed containing 500 to 4,000 g/ton chlortetracycline for not more than 5
days. After completing feeding of this combination, continue feeding a Type C top-dress medicated feed containing melengestrol acetate alone. Chlortetracycline and melengestrol as provided by No.
054771 in 510.600c of this chapter.
Melengestrol acetate Type C topdress medicated feed must be top dressed onto or mixed at feeding with a Type C medicated feed containing 500 to 4,000 g/ton chlortetracycline for not more than 5
days. After completing feeding of this combination, continue feeding a Type C top-dress medicated feed containing melengestrol acetate alone for a total time not exceeding 24 days. 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.

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