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Sato K, Ohashi E, Tsukano K, Ikeda K, Ajito T, Suzuki K. Effects of temporary cessation of milking following intramammary cefazolin sodium infusion on residual antibiotic in lactating dairy cows. J Vet Med Sci 2021; 83:814-818. [PMID: 33775987 PMCID: PMC8182312 DOI: 10.1292/jvms.20-0716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The aims of studies were to estimate the withdrawal period of antibiotic from milk after the intramammary infusion of cefazolin sodium (CEZ) in cows with
difficulties in frequent milk discharge due to disease such as teat injury. The period was compared among cows milked twice a day after 150 or 450 mg of CEZ
were administered to all quarters (Study 1, 2) and the cows in which milking of front-right quarter was ceased for five days after administration of these
infusions to only that quarter (Study 3). In Studies 1 and 2, the median of 17.66 µg/ml and 83.18 µg/ml of CEZ were detected in the samples of first milking
after intramammary administration, respectively; however, there was no residual antibiotic by 72 hr in all cows. In Study 3, the median of 1.96 µg/ml of CEZ was
detected in the sample after the resumption of milking at 120 hr, and the residual was eliminated by 174 hr. The withdrawal period may be prolonged by the
cessation of milking after administration, and the period is the total time from cessation to 72 hr after the resumption of milking.
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Affiliation(s)
- Kaoru Sato
- Large Animal Technical Services Team, Nippon Zenyaku Kogyo Tokyo Branch Office, 1-2-5 Kandasurugadai, Chiyoda, Tokyo 101-0062, Japan.,School of Veterinary Medicine, Rakuno Gakuen University, 582 Bunkyodai-Midorimachi, Ebetsu, Hokkaido 069-8501, Japan
| | - Eiichi Ohashi
- Manufacturing Division, Nippon Zenyaku Kogyo, 1-1 Tairanoue, Sasagawa, Asakamachi, Koriyama, Fukushima 963-0196, Japan
| | - Kenji Tsukano
- Minami-Hokkaido Agricultural Mutual Aid Association, 74-2 Higashimae, 14 Hokuto, Hokkaido 041-1214, Japan
| | - Keiko Ikeda
- School of Veterinary Medicine, Rakuno Gakuen University, 582 Bunkyodai-Midorimachi, Ebetsu, Hokkaido 069-8501, Japan
| | - Tadaharu Ajito
- Faculty of Veterinary Medicine, Nippon Veterinary & Life Science University, 1-7-1 Kyonancho Musashino-shi, Tokyo 180-8602, Japan
| | - Kazuyuki Suzuki
- School of Veterinary Medicine, Rakuno Gakuen University, 582 Bunkyodai-Midorimachi, Ebetsu, Hokkaido 069-8501, Japan
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