TY - JOUR
T1 - Resistant Bacteria in Broiler Litter Used as Ruminant Feed
T2 - Effect of Biotic Treatment
AU - Efriem, Solomon
AU - Sabastian, Chris
AU - Blum, Shlomo
AU - Fleker, Marcelo
AU - Mabjeesh, Sameer J.
AU - Britzi, Malka
N1 - Publisher Copyright:
© 2023 by the authors.
PY - 2023/7
Y1 - 2023/7
N2 - The use of antimicrobial drugs and coccidiostats in poultry farming is widespread, with a significant proportion of these drugs being excreted and released into the environment. The residues of such drugs in poultry litter (PL) can result in the development of antibiotic-resistant bacteria. The impact of different biotic treatments (aerobic, anaerobic, and stacking) on broiler litter (BL) before its use as animal feed has not been studied extensively, nor have the differences between antimicrobial-dependent and independent broiler farms been investigated. This study aimed to determine the resistant bacteria in BL used as ruminant feed before and after litter treatment. The results show that the most resistant bacteria before BL treatment were the Enterococcus species. This study also found that the quantity of amoxicillin-resistant Enterococcus detected in samples from antimicrobial-dependent farms was significantly higher than in those from antimicrobial-independent farms. Additionally, 14% of bacteria were multi-resistant to tetracycline, sulfafurazole, and erythromycin in antimicrobial-independent farm litters, significantly lower than those measured in antimicrobial-dependent broiler farm litter.
AB - The use of antimicrobial drugs and coccidiostats in poultry farming is widespread, with a significant proportion of these drugs being excreted and released into the environment. The residues of such drugs in poultry litter (PL) can result in the development of antibiotic-resistant bacteria. The impact of different biotic treatments (aerobic, anaerobic, and stacking) on broiler litter (BL) before its use as animal feed has not been studied extensively, nor have the differences between antimicrobial-dependent and independent broiler farms been investigated. This study aimed to determine the resistant bacteria in BL used as ruminant feed before and after litter treatment. The results show that the most resistant bacteria before BL treatment were the Enterococcus species. This study also found that the quantity of amoxicillin-resistant Enterococcus detected in samples from antimicrobial-dependent farms was significantly higher than in those from antimicrobial-independent farms. Additionally, 14% of bacteria were multi-resistant to tetracycline, sulfafurazole, and erythromycin in antimicrobial-independent farm litters, significantly lower than those measured in antimicrobial-dependent broiler farm litter.
KW - Kirby–Bauer test
KW - MALDI-TOF-MS analysis
KW - antimicrobial resistance
KW - antimicrobials
KW - broiler litter
KW - coccidiostats
UR - http://www.scopus.com/inward/record.url?scp=85166001468&partnerID=8YFLogxK
U2 - 10.3390/antibiotics12071093
DO - 10.3390/antibiotics12071093
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C2 - 37508189
AN - SCOPUS:85166001468
SN - 2079-6382
VL - 12
JO - Antibiotics
JF - Antibiotics
IS - 7
M1 - 1093
ER -