520.2123b—Spectinomycin powder.
(a) Specifications.
Each gram (g) of powder contains spectinomycin dihydrochloride pentahydrate equivalent to 0.5 g spectinomycin.
(d) Conditions of use in chickens.
It is administered in the drinking water of growing chickens as follows:
(1) Indications for use and amounts—
(i)
For increased rate of weight gain and improved feed efficiency in broiler chickens, administer 0.5 g per gallon of water as the only source of drinking water for the first 3 days of life and for 1 day following each vaccination.
(ii)
As an aid in controlling infectious synovitis due to Mycoplasma synoviae in broiler chickens, administer 1 g per gallon of water as the only source of drinking water for the first 3 to 5 days of life.
(iii)
As an aid in the prevention or control of losses due to CRD associated with M. gallisepticum (PPLO) in growing chickens, administer 2 g per gallon of water as the only source of drinking water for the first 3 days of life and for 1 day following each vaccination.
(2) Limitations.
Do not administer to laying chickens. Do not administer within 5 days of slaughter.