title: [Reduction of 137caesium contamination in wild boars by supplementing offered food with ammonium-iron-hexa-cyanoferrate].
abstract: OBJECTIVE
  This replication study investigated whether the 137caesium (137Cs) contamination of wild boars could be relevantly reduced under field conditions by adding ammonium-iron-hexa-cyanoferrate (AFCF; Prussian blue) to the food.
  
  
  METHODS
  In 285 wild boars that had been shot in six Bavarian hunting territories during the season (November until May) between 01 November 2010 and 10 December 2011 137Cs contamination was analysed. Thirty-five animals originated from two hunting territories in which offered food had been supplemented with 1250 mg AFCF per kilogram food.
  
  
  RESULTS
  The control animals showed a mean 137Cs contamination of 522 Bq/kg lean skeletal muscle meat. Direct (univariable) comparisons of the two experimental territories with the four control territories yielded a mean reduction in 137Cs contamination due to Prussian bluefeeding by -211 Bq/kg (p < 0.001). Multivariable models that took potential confounders into account (age, weight, sex, hunting date, territory) estimated the effect to be -344 Bq/kg (p < 0.05).
  
  
  CONCLUSIONS
  This replication study confirmed the finding of Kienzle et al. (12) who described a statistically significant reduction in 137Cs contamination by -380 Bq/kg due to the feeding of Prussian blue in other territories.
authors.affiliation: PD Dr. Peter Morfeld, Institut für Epidemiologie und Risikobewertung, in der Arbeitswelt (IERA) der Evonik Industries AG, Rellinghauser Straße 1-11, 45128 Essen, E-Mail: peter.morfeld@evonik.com.
authors.forename: P
authors.initials: P
authors.lastname: Morfeld
authors.forename: J
authors.initials: J
authors.lastname: Reddemann
authors.forename: P
authors.initials: P
authors.lastname: Schungel
authors.forename: E
authors.initials: E
authors.lastname: Kienzle
mesh_terms: D000821:Animal Feed; D000818:Animals; D002588:Cesium Radioisotopes / Q000032:analysis / Q000493:pharmacokinetics*; D004785:Environmental Pollutants / Q000032:analysis / Q000378:metabolism; D005295:Ferrocyanides / Q000008:administration & dosage*; D005507:Food Contamination, Radioactive / Q000032:analysis / Q000517:prevention & control; D008460:Meat / Q000032:analysis; D018482:Muscle, Skeletal / Q000737:chemistry / Q000187:drug effects* / Q000378:metabolism*; D034421:Sus scrofa / Q000378:metabolism*; D013552:Swine
chemical_list: D002588:Cesium Radioisotopes; D004785:Environmental Pollutants; D005295:Ferrocyanides; C056252:ammonium iron (III) hexacyanoferrate; C000170:ferric ferrocyanide
keywords: 137caesium decontamination; Bavarian hunting territories; Field study; prussian blue; radioactivity; wild boars