Federal Register - March 8, 2021
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Source: Federal Register
13190
Federal Register / Vol. 86, No. 43 / Monday, March 8, 2021 / Rules and Regulations
Chlortetracycline and sulfamethazine amount each
Combination in grams/ton
Indications for use
Limitations
i To provide 350
milligrams per head per day.
Feed for 28 days. Withdraw 7 days prior to slaughter. A withdrawal period has not been established for this product in pre-ruminating calves. Do not use in calves to be processed for veal.
054771
069254
ii 35 to 105 g/ton, each.
Lasalocid, 10 to 30.
Beef cattle: As an aid in the maintenance of weight gains in the presence of respiratory disease such as shipping fever.
Beef steers and heifers fed in confinement for slaughter: As an aid in the maintenance of weight gains in the presence of respiratory disease such as shipping fever, and for improved feed efficiency.
054771
iii 35 to 42.2 g/
ton, each.
Lasalocid, 25 to 30.
Beef steers and heifers fed in confinement for slaughter: As an aid in the maintenance of weight gains in the presence of respiratory disease such as shipping fever, and for improved feed efficiency and increased rate of weight gain.
iv 35 to 700 g/
ton, each.
Lasalocid, 30 to 181.8.
Beef cattle up to 800 lb: As an aid in the maintenance of weight gains in the presence of respiratory disease such as shipping fever, and for control of coccidiosis caused by Eimeria bovis and E. zuernii.
Feed continuously for 28 days to provide 350 mg chlortetracycline, 350
mg sulfamethazine, and 100 to 300 mg lasalocid per head per day.
Do not allow horses or other equines access to Type C feeds containing lasalocid as ingestion may be fatal. Safety of lasalocid for use in unapproved species has not been established. Withdraw 7
days prior to slaughter. A withdrawal period has not been established for this product in pre-ruminating calves. Do not use in calves to be processed for veal. Lasalocid as provided by No. 054771 in 510.600c of this chapter.
Feed continuously for 28 days to provide 350 mg chlortetracycline, 350
mg sulfamethazine, and 250 to 300 mg lasalocid per head per day.
Do not allow horses or other equines access to Type C feeds containing lasalocid as ingestion may be fatal. Safety of lasalocid for use in unapproved species has not been established. Withdraw 7
days prior to slaughter. A withdrawal period has not been established for this product in pre-ruminating calves. Do not use in calves to be processed for veal. Lasalocid as provided by No. 054771 in 510.600c of this chapter.
Hand feed continuously for 28 days to provide 350 mg chlortetracycline, 350 mg sulfamethazine, and 1 mg lasalocid per 2.2 lb body weight per day up to a maximum of 360 mg lasalocid per head per day. Do not allow horses or other equines access to Type C feeds containing lasalocid as ingestion may be fatal. Safety of lasalocid for use in unapproved species has not been established. Withdraw 7
days prior to slaughter. A withdrawal period has not been established for this product in pre-ruminating calves. Do not use in calves to be processed for veal. Lasalocid as provided by No. 054771 in 510.600c of this chapter.
56. In 558.311, redesignate paragraphs e5ii through vi as paragraphs e5iii through vii and add new paragraph e5ii to read as follows:
e
5
ii Chlortetracycline and sulfamethazine as in 558.140.
558.311
Indications for use
Limitations
i 0.25 to 0.5
Heifers fed in confinement for slaughter: For increased rate of weight gain, improved feed efficiency, and suppression of estrus heat.
Administer 0.5 to 2.0 pounds lb/head/day of medicated feed containing 0.125 to 1.0 mg melengestrol acetate/lb to provide 0.25 to 0.5 mg melengestrol acetate/head/day.
58. In 558.500, in paragraph b, remove Nos. 054771 and 058198 and in its place add Nos. 016592, 054771,
Sponsor
and 058198 and revise paragraphs e2i, iii, and vi.
The revisions read as follows:
558.500
Ractopamine.
e
2
Combination in grams/ton
Indications for use
Limitations
i 8.2 to 24.6
Cattle fed in confinement for slaughter: For increased rate of weight gain and improved feed efficiency during the last 28 to 42
days on feed
Feed continuously as sole ration during the last 28 to 42 days on feed
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Ractopamine in grams/ton
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054771
Melengestrol.
e
1
Combination in grams/ton
jbell on DSKJLSW7X2PROD with RULES
558.342
Melengestrol acetate in mg/head/day
054771
add Nos. 016592 and 058198 and revise paragraph e1i.
The revision reads as follows:
57. In 558.342, in paragraph b2, remove No. 058198 and in its place
Lasalocid.
Sponsors
Sponsor
08MRR1
016592
054771
058198
