Zoetis has launched Cefshot, a first generation cephalosporin dry cow intramammary antibiotic.Zoetis has launched Cefshot, a first generation cephalosporin dry cow intramammary antibiotic.

Cefshot is indicated for treatment of subclinical mastitis at drying off with action against Gram positive and Gram negative bacteria.

Jude Roberts MRCVS from Zoetis says this makes possible three-way selective dry cow therapy with products from the company's dry cow portfolio: "With evidence-based triage, this covers teat sealant solo, in combination with narrow spectrum cloxacillin, or now with broader spectrum long-acting cephalonium.

"This is in keeping with the trend from milk buyers for increasing precision in the use of antibiotic dry cow therapy, and only when it is justified in the first place."

Dry periods longer that 54 days require milk withhold for 96 hours. For shorter dry periods, milk withhold is 58 days. Meat withhold period is 21 days.

Cefshot is available in multiples of 24 and 120 tubes, for delivery September onwards.

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