520.823—Erythromycin phosphate.
(a) Specifications.
Erythromycin phosphate is the phosphate salt of the antibiotic substance produced by the growth of Streptomyces erythreus or the same antibiotic substance produced by any other means. One gram of erythromycin phosphate is equivalent to 0.89 gram of erythromycin master standard.
(ii) Indications for use.
As an aid in the control of chronic respiratory disease due to Mycoplasma gallisepticum susceptible to erythromycin.
(iii) Limitations.
Administer for 5 days; do not use in replacement pullets over 16 weeks of age; do not use in chickens producing eggs for human consumption; to assure effectiveness, treated birds must consume enough medicated water to provide a therapeutic dosage; solutions older than 3 days should not be used; withdraw 1 day before slaughter.
(ii) Indications for use.
As an aid in the control of infectious coryza due to Hemophilus gallinarum susceptible to erythromycin.
(iii) Limitations.
Administer for 7 days; do not use in replacement pullets over 16 weeks of age; do not use in chickens producing eggs for human consumption; to assure effectiveness, treated birds must consume enough medicated water to provide a therapeutic dosage; solutions older than 3 days should not be used; withdraw 1 day before slaughter.
(ii) Indications for use.
As an aid in the control of blue comb (nonspecific infectious enteritis) caused by organisms susceptible to erythromycin.
(iii) Limitations.
Administer for 7 days; do not use in turkeys producing eggs for human consumption; to assure effectiveness, treated birds must consume enough medicated water to provide a therapeutic dosage; solutions older than 3 days should not be used; withdraw 1 day before slaughter.