|CAS number||(α/β mix) , (α) , (β)|
|Jmol-3D images||Image 1
|Molecular formula||C89H102ClN9O36 (α)
|Molar mass||1909.254 (α)
|Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)|
Avoparcin is a glycopeptide antibiotic effective against Gram-positive bacteria. It has been used in agriculture as an additive to livestock feed to promote growth in chickens, pigs, and cattle. It is also used as an aid in the prevention of necrotic enteritis in poultry.
Avoparcin is a mixture of two closely related chemical compounds, known as α-avoparcin and β-avoparcin, which differ by the presence of an additional chlorine atom in β-avoparcin. Avoparcin also shares a chemical similarity with vancomycin. Because of this similarity, concern exists that widespread use of avoparcin in animals may lead to an increased prevalence of vancomycin-resistant strains of bacteria.
- "Avoparcin". Australian Pesticides and Veterinary Medicine Authority.
- Acar, J.; Casewell, M.; Freeman, J.; Friis, C.; Goossens, H. (2000). "Avoparcin and virginiamycin as animal growth promoters: A plea for science in decision-making". Clinical Microbiology and Infection 6 (9): 477–82. doi:10.1046/j.1469-0691.2000.00128.x. PMID 11168181.
- Bager, F; Madsen, M; Christensen, J; Aarestrup, F.M (1997). "Avoparcin used as a growth promoter is associated with the occurrence of vancomycin-resistant Enterococcus faecium on Danish poultry and pig farms". Preventive Veterinary Medicine 31 (1–2): 95–112. doi:10.1016/S0167-5877(96)01119-1. PMID 9234429.
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- Lauderdale, TL; Shiau, YR; Wang, HY; Lai, JF; Huang, IW; Chen, PC; Chen, HY; Lai, SS; Liu, YF (2007). "Effect of banning vancomycin analogue avoparcin on vancomycin-resistant enterococci in chicken farms in Taiwan". Environmental microbiology 9 (3): 819–23. doi:10.1111/j.1462-2920.2006.01189.x. PMID 17298380.
- Commission Directive 97/6/EC of 30 January 1997 amending Council Directive 70/524/EEC concerning additives in feedingstuffs, Official Journal L 035 , 05/02/1997 P. 0011-0013
- Alex Koppelman (Nov 7, 2007). "Is the way we raise our food giving us MRSA?". Salon.com.