(a) Specifications. Each 10-milliliter single-dose syringe contains penicillin G procaine equivalent to 100,000 units of penicillin G.

(b) Related tolerances. See §556.510 of this chapter.

(c) Sponsors. See Nos. 010515 and 061133 in §510.600(c) of this chapter.

(d) Conditions of use in lactating cows—(1) Amount. Infuse one 10-milliliter dose into each infected quarter. Treatment may be repeated at 12-hour intervals for not more than three doses, as indicated by clinical response.

(2) Indications for use. For the treatment of mastitis caused by Streptococcus agalactiae, S. dysgalactiae, and S. uberus in lactating cows.

(3) Limitations. Milk that has been taken from animals during treatment and for 60 hours after the latest treatment must not be used for food. Animals must not be slaughtered for food during treatment or within 3 days after the latest treatment.

(e) Conditions of use in dry cows—(1) Amount. Infuse one 10-milliliter dose into each infected quarter at time of drying-off.

(2) Indications of use. For the treatment of mastitis caused by Streptococcus agalactiae in dry cows.

(3) Limitations. Discard all milk for 72 hours (6 milkings) following calving, or later as indicated by the marketable quality of the milk. Animals must not be slaughtered for food within 14 days postinfusion.

[73 FR 18442, Apr. 4, 2008, as amended at 74 FR 18990, Apr. 27, 2009; 84 FR 8974, Mar. 13, 2019]