Monensin in grams/ton | Combination in grams/ton | Indications for use | Limitations | Sponsor |
(i) 90 to 110 | Broiler chickens: As an aid in the prevention of coccidiosis caused by E. necatrix, E. tenella, E. acervulina, E. brunetti, E. mivati, and E. maxima | Feed continuously as the sole ration. In the absence of coccidiosis, the use of monensin with no withdrawal period may limit feed intake resulting in reduced weight gain. Do not feed to laying chickens | 058198 | |
(ii) 90 to 110 | Layer replacement chickens: As an aid in the prevention of coccidiosis caused by E. necatrix, E. tenella, E. acervulina, E. brunetti, E. mivati, and E. maxima | Feed continuously as the sole ration. Do not feed to chickens over 16 weeks of age. Do not feed to laying chickens | 058198 | |
(iii) 90 to 110 | Bacitracin methylenedisalicylate, 4 to 50 | Broiler chickens: As an aid in the prevention of coccidiosis caused by E. necatrix, E. tenella, E. acervulina, E. brunetti, E. mivati, and E. maxima, and for improved feed efficiency | Feed continuously as sole ration. In the absence of coccidiosis, the use of monensin with no withdrawal period may limit feed intake resulting in reduced weight gain. Do not feed to laying chickens. Bacitracin methylenedisalicylate provided by No. 054771 in § 510.600(c) of this chapter | 054771 |
(iv) 90 to 110 | Bacitracin methylenedisalicylate, 4 to 50 | Broiler chickens: As an aid in the prevention of coccidiosis caused by Eimeria necatrix, E. tenella, E. acervulina, E. brunetti, E. mivati, and E. maxima, and for increased rate of weight gain and improved feed efficiency | Feed as the sole ration throughout the feeding period. Do not feed to laying chickens. Do not feed to chickens over 16 weeks of age. Do not allow horses, other equines, mature turkeys, or guinea fowl access to feed containing monensin. Ingestion of monensin by horses and guinea fowl has been fatal. In the absence of coccidiosis in broiler chickens, the use of monensin with no withdrawal period may limit feed intake resulting in reduced weight gain. Not for broiler breeder replacement chickens. Monensin provided by No. 058198, bacitracin methylenedisalicylate provided by No. 069254 in § 510.600(c) of this chapter | 069254 |
(v) 90 to 110 | Bacitracin methylenedisalicylate, 4 to 50 | Laying hen replacement chickens and layer breeder replacement chickens: As an aid in the prevention of coccidiosis caused by Eimeria necatrix, E. tenella, E. acervulina, E. brunetti,E. mivati, and E. maxima, and for increased rate of weight gain and improved feed efficiency | Feed as the sole ration throughout the feeding period. Do not feed to laying chickens. Do not feed to chickens over 16 weeks of age. Do not allow horses, other equines, mature turkeys, or guinea fowl access to feed containing monensin. Ingestion of monensin by horses and guinea fowl has been fatal. Not for broiler breeder replacement chickens. Monensin provided by No. 058198, bacitracin methylenedisalicylate provided by No. 069254 in § 510.600(c) of this chapter | 069254 |
(vi) 90 to 110 | Bacitracin methylenedisalicylate, 4 to 50 | Layer replacement chickens: As an aid in the prevention of coccidiosis caused by E. necatrix, E. tenella, E. acervulina, E. brunetti, E. mivati, and E. maxima, and for increased rate of weight gain and improved feed efficiency | Feed continuously as sole ration. Do not feed to chickens over 16 weeks of age. Do not feed to laying chickens. Monensin sodium provided by No. 058198, bacitracin methylenedisalicylate provided by No. 054771 in § 510.600(c) of this chapter | 054771 |
(vii) 90 to 110 | Bacitracin methylenedisalicylate, 5 to 25 | Broiler chickens: As an aid in the prevention of coccidiosis caused by E. necatrix, E. tenella, E. acervulina, E. brunetti, E. mivati, and E. maxima, and for increased rate of weight gain and improved feed efficiency | Feed continuously as sole ration. In the absence of coccidiosis, the use of monensin with no withdrawal period may limit feed intake resulting in reduced weight gain. Do not feed to laying chickens. Bacitracin methylenedisalicylate provided by No. 054771 in § 510.600(c) of this chapter | 058198 |
(viii) 90 to 110 | Bacitracin methylenedisalicylate, 50 | Broiler chickens: As an aid in the prevention of coccidiosis caused by Eimeria necatrix, E. tenella, E. acervulina, E. brunetti, E. mivati, and E. maxima, and for the prevention of mortality caused by necrotic enteritis associated with Clostridium perfringens | Feed as the sole ration for 28 to 35 days, starting from the time chicks are placed for brooding. Do not feed to laying chickens. Do not feed to chickens over 16 weeks of age. Do not allow horses, other equines, mature turkeys, or guinea fowl access to feed containing monensin. Ingestion of monensin by horses and guinea fowl has been fatal. In the absence of coccidiosis in broiler chickens, the use of monensin with no withdrawal period may limit feed intake resulting in reduced weight gain. Not for broiler breeder replacement chickens. Monensin provided by No. 058198, bacitracin methylenedisalicylate provided by No. 069254 in § 510.600(c) of this chapter | 069254 |
(ix) 90 to 110 | Bacitracin methylenedisalicylate, 50 | Laying hen replacement chickens and layer breeder replacement chickens: As an aid in the prevention of coccidiosis caused by Eimeria necatrix, E. tenella, E. acervulina, E. brunetti, E. mivati, and E. maxima, and for the prevention of mortality caused by necrotic enteritis associated with Clostridium perfringens | Feed as the sole ration for 28 to 35 days, starting from the time chicks are placed for brooding. Do not feed to laying chickens. Do not feed to chickens over 16 weeks of age. Do not allow horses, other equines, mature turkeys, or guinea fowl access to feed containing monensin. Ingestion of monensin by horses and guinea fowl has been fatal. Not for broiler breeder replacement chickens. Monensin provided by No. 058198, bacitracin methylenedisalicylate provided by No. 069254 in § 510.600(c) of this chapter | 069254 |
(x) 90 to 110 | Bacitracin methylenedisalicylate, 50 | Broiler and layer replacement chickens: As an aid in the prevention of coccidiosis caused by E. necatrix, E. tenella, E. acervulina, E. brunetti, E. mivati, and E. maxima, and for improved feed efficiency, and as an aid in the prevention of necrotic enteritis caused or complicated by Clostridium spp. or other organisms susceptible to bacitracin | Feed continuously as sole ration. Do not feed to chickens over 16 weeks of age. Do not feed to laying chickens. Monensin sodium provided by No. 058198, bacitracin methylenedisalicylate provided by No. 054771 in § 510.600(c) of this chapter | 054771 |
(xi) 90 to 110 | Bacitracin zinc, 4 to 50 | Broiler chickens: As an aid in the prevention of coccidiosis caused by E. necatrix, E. tenella, E. acervulina, E. brunetti, E. mivati, and E. maxima, and for increased rate of weight gain and improved feed efficiency | Feed continuously as sole ration. In the absence of coccidiosis, the use of monensin with no withdrawal period may limit feed intake resulting in reduced weight gain. Do not feed to laying chickens. Bacitracin zinc provided by No. 054771 in § 510.600(c) of this chapter | 054771 |
(xii) 90 to 110 | Bacitracin zinc, 10 | Broiler chickens: As an aid in the prevention of coccidiosis caused by E. necatrix, E. tenella, E. acervulina, E. brunetti, E. mivati, and E. maxima, and for increased rate of weight gain and improved feed efficiency | Feed continuously as sole ration. In the absence of coccidiosis, the use of monensin with no withdrawal period may limit feed intake resulting in reduced weight gain. Do not feed to laying chickens. Bacitracin zinc provided by No. 054771 in § 510.600(c) of this chapter | 058198 |
(xiii) 90 to 110 | Bacitracin zinc, 10 to 30 | Broiler chickens: As an aid in the prevention of coccidiosis caused by E. necatrix, E. tenella, E. acervulina, E. brunetti, E. mivati, and E. maxima, and for improved feed efficiency | Feed continuously as sole ration. In the absence of coccidiosis, the use of monensin with no withdrawal period may limit feed intake resulting in reduced weight gain. Do not feed to laying chickens. Bacitracin zinc provided by No. 054771 in § 510.600(c) of this chapter | 058198 |
(xiv) 90 to 110 | Bambermycins, 1 to 2 | Broiler chickens: As an aid in the prevention of coccidiosis caused by E. necatrix, E. tenella, E. acervulina, E. brunetti, E. mivati, and E. maxima, and for increased rate of weight gain and improved feed efficiency | Feed continuously as sole ration. Do not feed to laying chickens. Bambermycins provided by No. 016592 in § 510.600(c) of this chapter | 016592, 058198 |
Monensin in grams/ton | Combination in grams/ton | Indications for use | Limitations | Sponsor |
(i) 54 to 90 | Growing turkeys: For the prevention of coccidiosis caused by E. adenoeides, E. meleagrimitis, and E. gallopavonis | For growing turkeys only. Feed continuously as sole ration. Some strains of turkey coccidia may be monensin tolerant or resistant. Monensin may interfere with development of immunity to turkey coccidiosis. Do not allow horses, other equines, mature turkeys, or guinea fowl access to feed containing monensin. Ingestion of monensin by horses and guinea fowl has been fatal | 058198 | |
(ii) 54 to 90 | Bacitracin methylenedisalicylate, 4 to 50 | Growing turkeys: For the prevention of coccidiosis caused by Eimeria adenoeides, E. meleagrimitis, and E. gallopavonis, and for increased rate of weight gain and improved feed efficiency | Feed continuously as the sole ration. The optimum level depends upon the severity of coccidiosis exposure. Do not allow horses, other equines, mature turkeys, or guinea fowl access to feed containing monensin. Ingestion of monensin by horses and guinea fowl has been fatal. Some strains of turkey coccidia may be monensin tolerant or resistant. Monensin may interfere with development of immunity to turkey coccidiosis. Bacitracin methylenedisalicylate as provided by No. 054771 or 069254 in § 510.600(c) of this chapter | 058198 069254 |
(iii) 54 to 90 | Bacitracin methylenedisalicylate, 200 | Growing turkeys: For the prevention of coccidiosis caused by E. adenoeides, E. meleagrimitis, and E. gallopavonis, and as an aid in the control of transmissible enteritis complicated by organisms susceptible to bacitracin methylenedisalicylate | For growing turkeys only. Feed continuously as sole ration. Some strains of turkey coccidia may be monensin tolerant or resistant. Monensin may interfere with development of immunity to turkey coccidiosis. Do not allow horses, other equines, mature turkeys, or guinea fowl access to feed containing monensin. Ingestion of monensin by horses and guinea fowl has been fatal. Bacitracin methylenedisalicylate as provided by No. 054771 in § 510.600(c) of this chapter | 058198 |
(iv) 54 to 90 | Bambermycins, 1 to 2 | Growing turkeys: For the prevention of coccidiosis in turkeys caused by E. adenoeides, E. meleagrimitis, and E. gallopavonis, and for improved feed efficiency | For growing turkeys only. Feed continuously as sole ration. Some strains of turkey coccidia may be monensin tolerant or resistant. Monensin may interfere with development of immunity to turkey coccidiosis. Bambermycins as provided by No. 016592 in § 510.600(c) of this chapter | 058198 |
(v) 54 to 90 | Bambermycins, 2 | Growing turkeys: For the prevention of coccidiosis caused by E. adenoeides, E. meleagrimitis, and E. gallopavonis, and for increased rate of weight gain and improved feed efficiency | For growing turkeys only. Feed continuously as sole ration. Some strains of turkey coccidia may be monensin tolerant or resistant. Monensin may interfere with development of immunity to turkey coccidiosis. Bambermycins as provided by No. 016592 in § 510.600(c) of this chapter | 058198 |
Monensin in grams/ton | Indications for use | Limitations | Sponsor |
(i) 5 to 40 | Growing beef steers and heifers fed in confinement for slaughter: For improved feed efficiency | Feed continuously in complete feed at a rate of 50 to 480 milligrams of monensin per head per day. No additional improvement in feed efficiency has been shown from feeding monensin at levels greater than 30 grams per ton (360 milligrams per head per day). See special labeling considerations in paragraph (d) of this section | 016592 058198 |
(ii) 10 to 40 | Growing beef steers and heifers fed in confinement for slaughter: For prevention and control of coccidiosis due to Eimeria bovis and E. zuernii | Feed at a rate of 0.14 to 0.42 milligram per pound of body weight per day, depending upon the severity of challenge, up to maximum of 480 milligrams per head per day. See special labeling considerations in paragraph (d) of this section | 016592 058198 |
(iii) 10 to 200 | Calves excluding veal calves: For prevention and control of coccidiosis due to Eimeria bovis and E. zuernii | Feed at a rate of 0.14 to 1.0 milligram monensin per pound of body weight per day, depending upon the severity of challenge, up to maximum of 200 milligrams per head per day. See special labeling considerations in paragraph (d) of this section | 016592 058198 |
(iv) 11 to 22 | Dairy cows: For increased milk production efficiency (production of marketable solids-corrected milk per unit of feed intake) | Feed continuously to dry and lactating dairy cows in a total mixed ration ("complete feed"). See special labeling considerations in paragraph (d) of this section | 016592 058198 |
(v) 11 to 400 | Dairy cows: For increased milk production efficiency (production of marketable solids-corrected milk per unit of feed intake) | Feed continuously to dry and lactating dairy cows in a component feeding system (including top dress). The Type C medicated feed must be fed in a minimum of 1 lb of feed to provide 185 to 660 mg/head/day monensin to lactating cows or 115 to 410 mg/head/day monensin to dry cows. See special labeling considerations in paragraph (d) of this section | 016592 058198 |
(vi) 15 to 400 | Growing beef steers and heifers on pasture (stocker, feeder, and slaughter) or in a dry lot and replacement beef and dairy heifers: For increased rate of weight gain, and for prevention and control of coccidiosis due to Eimeria bovis and E. zuernii | For increased rate of weight gain, feed at a rate of 50 to 200 milligrams monensin per head per day in not less than 1 pound of feed or, after the 5th day, feed at a rate of 400 milligrams per head per day every other day in not less than 2 pounds of feed. For prevention and control of coccidiosis, feed at a rate of 0.14 to 0.42 milligram per pound of body weight per day, depending on severity of challenge, up to 200 milligrams per head per day. During first 5 days of feeding, cattle should receive no more than 100 milligrams per day in not less than 1 pound of feed. See special labeling considerations in paragraph (d) of this section | 016592 058198 |
(vii) 25 to 400 | Beef cows: For improved feed efficiency when receiving supplemental feed, and for the prevention and control of coccidiosis due to Eimeria bovis and E. zuernii | Feed as supplemental feed, either hand-fed in a minimum of 1 pound of feed or mixed in a total ration. For improved feed efficiency, feed continuously at a rate of 50 to 200 milligrams monensin per head per day. For prevention and control of coccidiosis, feed at a rate of 0.14 to 0.42 milligram per pound of body weight per day, depending upon severity of challenge, up to a maximum of 200 milligrams per head per day. During first 5 days of feeding, cattle should receive no more than 100 milligrams per head per day in not less than 1 pound of feed. See special labeling considerations in paragraph (d) of this section | 016592 058198 |
Monensin amount | Indications for use | Limitations | Sponsor |
(i) 150 milligrams per pound of protein-mineral block (0.033%) | Growing beef steers and heifers on pasture (stocker, feeder, and slaughter) and replacement beef heifers on pasture: For increased rate of weight gain, and for prevention and control of coccidiosis caused by Eimeria bovis and E. zuernii in pasture cattle which may require supplemental feed | Provide 50 to 200 milligrams of monensin (0.34 to 1.33 pounds of block) per head per day, at least 1 block per 10 to 12 head of cattle. Roughage must be available at all times. Do not allow animals access to other protein blocks, salt or mineral, while being fed this product. See paragraph (d)(10)(i) of this section | 012286 |
(ii) 175 milligrams per pound of protein-mineral block (0.038%) | Growing beef steers and heifers on pasture (stocker, feeder, and slaughter): For increased rate of weight gain | Provide 40 to 200 milligrams of monensin (0.25 to 1.13 pounds or 4 to 18 ounces of block) per head per day, at least 1 block per 4 head of cattle. Do not allow cattle access to salt or mineral while being fed this product. Ingestion by cattle of monensin at levels of 600 milligrams per head per day and higher has been fatal. See paragraph (d)(10)(i) of this section | 017800 |
(iii) 400 milligrams per pound of protein-mineral block (0.088%) | Pasture cattle (slaughter, stocker, feeder, and dairy and beef replacement heifers): For increased rate of weight gain | Provide 80 to 200 milligrams of monensin (0.2 to 0.5 pounds of block) per head per day, at least 1 block per 5 head of cattle. Feed blocks continuously. Do not feed salt or minerals containing salt. The effectiveness of this block in cull cows and bulls has not been established. See paragraph (d)(10)(i) of this section | 067949 |
(iv) 400 mg per pound of block | Growing beef steers and heifers on pasture (stocker, feeder, and slaughter) and beef replacement heifers): for increased rate of weight gain | Provide 50 to 200 mg of monensin (2 to 8 ounces of block) per head per day, in at least one block per five head of cattle. Feed blocks continuously. Do not feed salt of mineral supplements in addition to this block. Discontinue feeding if block consumption falls below 2 ounces or rises above 8 ounces daily. See paragraph (d)(10)(i) of this section. | 086113 |
(v) 1,620 grams per ton of mineral granules as specified in paragraph (f)(4)(v)(A) of this section | Growing beef steers and heifers on pasture (stocker, feeder, and slaughter) or in a dry lot and replacement beef and dairy heifers: For increased rate of weight gain, and for prevention and control of coccidiosis due to Eimeria bovis and E. zuernii | Feed at a rate of 50 to 200 milligrams per head per day. During the first 5 days of feeding, cattle should receive no more than 100 milligrams per day. Do not feed additional salt or minerals. Do not mix with grain or other feeds. Monensin is toxic to cattle when consumed at higher than approved levels. Stressed and/or feed- and/or water-deprived cattle should be adapted to the pasture and to unmedicated mineral supplement before using the monensin mineral supplement | 016592 058198 |
Ingredient | Percent | International feed No. |
Monocalcium phosphate (21% phosphorus, 15% calcium) | 29.49 | 6-01-082 |
Sodium chloride (salt) | 24.37 | 6-04-152 |
Dried cane molasses | 20.0 | 4-04-695 |
Ground limestone (33% calcium) or calcium carbonate (38% calcium) | 13.75 | 6-02-632 |
Cane molasses | 3.0 | 4-04-696 |
Processed grain by-products (as approved by AAFCO) | 5.0 | |
Vitamin/trace mineral premix1 | 2.5 | |
Monensin Type A article, 90.7 grams per pound | 0.89 | |
Antidusting oil | 1.0 |
1 Content of vitamin and trace mineral premixes may be varied. However, they should be comparable to those used for other free-choice feeds. Formulation modifications require FDA approval prior to marketing. Selenium must comply with 21 CFR 573.920 . Ethylenediamine dihydroiodide should comply with FDA Compliance Policy Guide Sec. 651.100 (CPG 7125.18).
Monensin in grams/ton | Indications for use | Limitations | Sponsor |
(i) 73 | Growing bobwhite quail: For the prevention of coccidiosis caused by Eimeria dispersa and E. lettyae | Feed continuously in complete feed at a rate of 50 to 480 milligrams of monensin per head per day. No additional improvement in feed efficiency has been shown from feeding monensin at levels greater than 30 grams per ton (360 milligrams per head per day) | 058198 |
(ii) [Reserved] |
Monensin in grams/ton | Indications for use | Limitations | Sponsor |
(i) 20 | Goats maintained in confinement: For the prevention of coccidiosis caused by Eimeria crandallis, E. christenseni, and E. ninakohlyakimovae | Feed continuously. Do not feed to lactating goats. See paragraph (d)(11) of this section for provisions for monensin liquid Type C goat feeds | 016592 058198 |
(ii) [Reserved] |
21 C.F.R. §558.355
For FEDERAL REGISTER citations affecting §558.355, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.govinfo.gov.