§ 558.530 - Roxarsone.

Link to an amendment published at 79 FR 10983, February 27, 2014.

(a)-(b) [Reserved]

(c) Related tolerances. See §556.60 of this chapter.

(d) Conditions of use—(1) Chickens. It is used in chicken feed as follows:

Roxarsone in grams per ton	Combinations in grams per ton	Indications for use	Limitations	Sponsor
(i) [Reserved]
(ii) 22.7 to 45.4	Chlortetracycline 10 to 50	Growing chickens: For increased rate of weight gain, improved feed efficiency, and improved pigmentation	Feed continuously throughout growing period; withdraw 5 days before slaughter; as sole source of organic arsenic; drug overdose or lack of water may result in weakness or paralysis of the legs Chlortetracycline as provided by No. 054771 in §510.600(c) of this chapter	054771
(iii) 22.7 to 45.4	Chlortetracycline 100 to 200	Growing chickens: For increased rate of weight gain, improved feed efficiency, and improved pigmentation; and for control of infectious synovitis caused by Mycoplasma synoviae susceptible to chlortetracycline	Feed continuously for 7 to 14 days; withdraw 5 days before slaughter; as sole source of organic arsenic; drug overdose or lack of water may result in weakness or paralysis of the legs Chlortetracycline as provided by No. 054771 in §510.600(c) of this chapter	054771
(iv) 22.7 to 45.4	Chlortetracycline 200 to 400	Growing chickens: For increased rate of weight gain, improved feed efficiency, and improved pigmentation; and for control of chronic respiratory disease (CRD) and air sac infection caused by M. gallisepticum and Escherichia coli susceptible to chlortetracycline	Feed continuously for 7 to 14 days; withdraw 5 days before slaughter; as sole source of organic arsenic; drug overdose or lack of water may result in weakness or paralysis of the legs Chlortetracycline as provided by No. 054771 in §510.600(c) of this chapter	054771
(v) 22.7 to 45.4	Chlortetracycline 500	Growing chickens: For increased rate of weight gain, improved feed efficiency, and improved pigmentation; and for reduction of mortality due to E. coli infections susceptible to chlortetracycline	Feed continuously for 5 days; withdraw 5 days before slaughter; as sole source of organic arsenic; drug overdose or lack of water may result in weakness or paralysis of the legs Chlortetracycline as provided by No. 054771 in §510.600(c) of this chapter	054771

(2) Turkeys. It is used in turkey feed as follows:

Roxarsone in grams per ton	Combinations in grams per ton	Indications for use	Limitations	Sponsor
(i) [Reserved]
(ii) 22.7 to 45.4	Chlortetracycline 10 to 50	Growing turkeys: For increased rate of weight gain, improved feed efficiency, and improved pigmentation	Feed continuously throughout growing period; withdraw 5 days before slaughter; as sole source of organic arsenic; drug overdose or lack of water may result in weakness or paralysis of the legs Chlortetracycline as provided by No. 054771 in §510.600(c) of this chapter	054771
(iii) 22.7 to 45.4	Chlortetracycline 200	Growing turkeys: For increased rate of weight gain, improved feed efficiency, and improved pigmentation; and for control of infectious synovitis caused by Mycoplasma synoviae susceptible to chlortetracycline	Feed continuously for 7 to 14 days; withdraw 5 days before slaughter; as sole source of organic arsenic; drug overdose or lack of water may result in weakness or paralysis of the legs Chlortetracycline as provided by No. 054771 in §510.600(c) of this chapter	054771
(iv) 22.7 to 45.4	Chlortetracycline 400	1. Growing turkeys: For increased rate of weight gain, improved feed efficiency, and improved pigmentation; and for control of hexamitiasis caused by Hexamita meleagrides susceptible to chlortetracycline 2. Turkey poults not over 4 weeks of age: Reduction of mortality due to paratyphoid caused by Salmonella typhimurium susceptible to chlortetracycline	Feed continuously for 7 to 14 days; withdraw 5 days before slaughter; as sole source of organic arsenic; drug overdose or lack of water may result in weakness or paralysis of the legs Chlortetracycline as provided by No. 054771 in §510.600(c) of this chapter	054771
(v) 22.7 to 45.4	Chlortetracycline, 25 mg/lb body weight daily	Growing turkeys: For increased rate of weight gain, improved feed efficiency, and improved pigmentation; and for control of complicating bacterial organisms associated with bluecomb (transmissible enteritis, coronaviral enteritis) susceptible to chlortetracycline	Feed continuously for 7 to 14 days; withdraw 5 days before slaughter; as sole source of organic arsenic; drug overdose or lack of water may result in weakness or paralysis of the legs Chlortetracycline as provided by No. 054771 in §510.600(c) of this chapter	054771

(3) Swine. It is used in swine feed as follows:

Roxarsone in grams per ton	Combinations in grams per ton	Indications for use	Limitations	Sponsor
(i) [Reserved]					(ii) 22.7 to 34.1	Chlortetracycline 400 (to administer 10 mg/lb body weight)	Growing and finishing swine: For increased rate of weight gain and improved feed efficiency; and for treatment of bacterial enteritis caused by E. coli and S. choleraesuis and bacterial pneumonia caused by Pasteurella multocida susceptible to chlortetracycline	Feed for not more than 14 days; withdraw 5 days before slaughter; as sole source of organic arsenic	054771
(iii) [Reserved]
(iv) 181.5	Chlortetracycline 10 to 50	Growing and finishing swine: For increased rate of weight gain and improved feed efficiency; and for treatment of swine dysentery	Feed for not more than 6 consecutive days; if improvement is not observed, consult a veterinarian; withdraw 5 days before slaughter; as a sole source of organic arsenic; animals must consume enough medicated feed to provide a therapeutic dose	054771
(v) 181.5	Chlortetracycline 400 (to administer 10 mg/lb body weight)	Growing and finishing swine: For the treatment of swine dysentery; and for treatment of bacterial enteritis caused by E. coli and S. choleraesuis and bacterial pneumonia caused by P. multocida susceptible to chlortetracycline	Feed for not more than 6 consecutive days; if improvement is not observed, consult a veterinarian; withdraw 5 days before slaughter; as a sole source of organic arsenic; animals must consume enough medicated feed to provide a therapeutic dose	054771

(4) Permitted combinations. It may be used in accordance with this section in combination with:

(i) [Reserved]

(ii) Amprolium as in §558.55.

(iii) Amprolium and ethopabate as in §558.58.

(iv) Bacitracin methylene disalicylate as in §558.76.

(v) Bacitracin zinc as in §558.78.

(vi) Bambermycins and bambermycins plus certain anticoccidials as in §558.95.

(vii) Chlortetracycline as in §558.128.

(viii) Clopidol as in §558.175.

(ix) Decoquinate alone or in combination as in §558.195.

(x) Diclazuril alone or in combination as in §558.198.

(xi) Halofuginone alone or in combination as in §558.265.

(xii) Lasalocid alone or in combination as in §558.311.

(xiii) Monensin alone or in combination as in §558.355.

(xiv) Narasin alone or in combination as in §558.363.

(xv) Nequinate as in §558.365.

(xvi) Nicarbazin alone or in combination as in §558.366.

(xvii) [Reserved]

(xviii) Penicillin and zoalene as in §558.680.

(xix) Robenidine hydrochloride as in §558.515.

(xx) Salinomycin alone or in combination as in §558.550.

(xxi) Semduramicin alone or in combination as in §558.555.

(xxii) Sulfadimethoxine, ormetoprim as in §558.575.

(xxiii) Zoalene alone or in combination as in §558.680.

[46 FR 52331, Oct. 27, 1981]

Editorial Note: For Federal Register citations affecting §558.530, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.fdsys.gov.