The use of the two macrolides antibiotics Spiramycin (S) and Tylosin (T) as growth promoters in animal feeding has been recently withdrawn in the European Union due to a concern about the outbreaks of farmacoresistance fenomena as a possible hazard for humans.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/identification-and-quantification-method-spiramycin-and-tylosin-feedingstuffs
[2] http://admin.indiaenvironmentportal.org.in/category/author/c-civitareale
[3] http://admin.indiaenvironmentportal.org.in/category/author/m-fiori
[4] http://admin.indiaenvironmentportal.org.in/category/author/ballerini-et-al
[5] http://admin.indiaenvironmentportal.org.in/category/journal/journal-pharmaceutical-and-biomedical-analysis
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/animal-feed
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/animal-products
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/food-contamination
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drugs
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pesticides-and-toxins
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/residue-testing
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/high-performance-liquid-chroma-tography-hplc