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Biocontained Carcass Composting for Control of Infectious Disease Outbreak in Livestock

Biocontained Carcass Composting for Control of Infectious Disease Outbreak in Livestock

Published on: May 6, 2010

Decline in extractable antibiotics in manure-based composts during composting.

K-R Kim¹, G Owens, Y S Ok

¹Han-River Environment Research Center, 627 Yangsu-ri, Yangseo-myeon, Yangpyeong-kun, 476-823 Kyounggi-do, Republic of Korea.

Waste Management (New York, N.Y.)

|August 26, 2011

Summary

Composting significantly reduces veterinary antibiotics (VAs) like tetracyclines, sulfonamides, and macrolides in livestock manure, meeting Korean safety guidelines. Sawdust enhances the decline of tetracyclines and sulfonamides during the composting process.

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Area of Science:

Environmental Science
Agricultural Science
Analytical Chemistry

Background:

Antibiotic residues in water pose environmental risks, with livestock manure being a primary source.
Veterinary antibiotics (VAs) in manure can enter agricultural lands via compost, necessitating VA reduction in composts.

Purpose of the Study:

To investigate the impact of composting on antibiotic levels in livestock manure.
To determine how compost components influence the degradation of tetracyclines, sulfonamides, and macrolides.

Main Methods:

Analysis of antibiotic concentrations in composted materials from manufacturing plants.
Laboratory-scale composting experiments with pig manure, sawdust, and spiked antibiotics (chlortetracycline, sulfamethazine, tylosin).
Monitoring of antibiotic levels and physicochemical properties during composting.

Main Results:

All three studied antibiotics (tetracyclines, sulfonamides, macrolides) declined below Korean guideline values in both field and lab-scale composting.
The presence of sawdust significantly enhanced the degradation of tetracyclines and sulfonamides.
Sawdust did not influence the decline rate of tylosin (a macrolide).

Conclusions:

Composting is an effective method for reducing veterinary antibiotic residues in livestock manure.
Sawdust inclusion in compost mixtures can improve the removal efficiency of certain antibiotic classes, particularly tetracyclines and sulfonamides.