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Investigation of doxycycline residues in bones after oral administration to broiler chickens Cover

Investigation of doxycycline residues in bones after oral administration to broiler chickens

Open Access
|May 2024

Abstract

Introduction

Chicken bones, a by-product of the poultry industry, can directly or indirectly enter the food chain. Bone meal and bone products could be sources of many contaminants. Considering the wide range of uses made of bones in the culinary and food industries, this material needs to be safe and antibiotic residue–free. To determine if such is the case, the concentration of doxycycline in chicken bones was investigated, this antimicrobial being one of the most commonly used in poultry production.

Material and Methods

Ross 308 broilers were grouped into three experimental and one control group. Doxycycline was administered in drinking water at therapeutic and sub-therapeutic doses, as well as via spray treatment. The concentration of doxycycline in bones was determined post slaughter by ultra-high performance liquid chromatography–tandem mass spectrometry.

Results

Doxycycline was quantified at 135 μg/kg 22 days after the last day of antibiotic administration at therapeutic doses; 2,285 μg/kg after sub-therapeutic treatment for 27 days and 9.62 μg/kg 22 days after the end of spray application.

Conclusion

High concentrations and long persistence of doxycycline in bones were found in this study. Doxycycline can contaminate all bone-derived products in the food and fertiliser industries.

Language: English
Page range: 255 - 261
Submitted on: Dec 28, 2023
Accepted on: May 22, 2024
Published on: May 29, 2024
Published by: National Veterinary Research Institute in Pulawy
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2024 Anna Gajda, Iwona Szymanek-Bany, Ewelina Nowacka-Kozak, Małgorzata Gbylik-Sikorska, published by National Veterinary Research Institute in Pulawy
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.