Some beekeepers use antibiotics prophylactically or in response to brood deseases European foulbrood and American foulbrood, which are caused by bacteria. Survey questions allowed a comparison of winter mortality among those who indicated they applied an antibiotic (Terramycin and/or Tylosin (Tylan)), at least once, to a majority
of their colonies between April 2011 and March 2012. Beekeepers who treated with antibiotics did not report losing more or fewer colonies than those who did not report treating with antibiotics. A majority of responding beekeepers did not treat with antibiotics (product used 341 as compared to no antibiotics used 3,268). When separating the products Terramycin (286 respondents used) with Tylosin (71 respondents used), again there was no significant difference within groups that used or did not use the product. More respondents are needed to make confident interpretations of these data.
This information is for educational purposes only. References to commercial products or trade names do not imply endorsement by the Bee Informed Partnership or its members. The results presented here are the summary of the population who responded. The sample may not be representative of the beekeeping population at large. These results simply highlight differences in the sample population. The results cannot be considered conclusive, causative, protective, or attest to product efficacy or lack of efficacy
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All survey reports listed here: Bee Informed National Management Survey 2011-2012