U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

Depletion of Penicillin G Residues in Heavy Sows after Intramuscular Injection. Part II: Application of Kidney Inhibition Swab Tests

Author:
Weilin L Shelver, Sara J Lupton, David J Newman, Steven J Larsen, David J Smith
Source:
Journal of agricultural and food chemistry 2014 v.62 no.30 pp. 7586-7592
ISSN:
0021-8561
Subject:
Food Safety and Inspection Service, benzylpenicillin, body fluids, drug residues, injection site, intramuscular injection, kidneys, liver, pharmacokinetics, procaine, skeletal muscle, sows, urine
Abstract:
Sows (n = 126; 228 ± 30.1 kg) were administered daily IM doses of penicillin G procaine (33 000 IU/kg bw; 5× the label dose) for 3 consecutive days using three different administration patterns. Within treatment, six sows each were slaughtered on withdrawal day 5, 10, 15, 20, 25, 32, and 39. Tissues (injection site, kidney, liver, skeletal muscle) or body fluids (serum and urine) were screened for penicillin G using the KIS test, recently adopted by the USDA Food Safety and Inspection Service. The IM administration patterns had no discernible effect on penicillin G depletion. Residues were depleted more rapidly from liver and skeletal muscle and more slowly from kidney and urine. Kidney was the most sensitive and suitable tissue for detecting penicillin G residues on-site, with two positive results after a 39-day withdrawal period. Urine was the most suitable ante-mortem surrogate to predict the results of kidney tests.
Agid:
59453
Handle:
10113/59453