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Updated: May 23, 2026

A Swine Burn Model for Investigating the Healing Process in Multiple Depth Burn Wounds
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Different scalding techniques do not affect boar taint.

Daniel Mörlein1, Anne Grave, Ahmad Reza Sharifi

  • 1Department of Animal Sciences, University of Göttingen, Göttingen, Germany. daniel.moerlein@agr.uni-goettingen.de

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|March 27, 2012
PubMed
Summary
This summary is machine-generated.

Scalding male pigs using TANK or TUNNEL methods does not reduce boar taint compounds like androstenone and skatole. Nearly 30% of carcasses may still be unacceptably tainted, posing challenges for the pork industry.

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Area of Science:

  • Animal Science
  • Food Science
  • Agricultural Engineering

Background:

  • Castration of male piglets is performed to prevent boar taint, an unpleasant odor in pork.
  • Animal welfare concerns are leading to a ban on castration in the European Community.
  • Alternative methods to control boar taint are urgently needed.

Purpose of the Study:

  • To evaluate the effectiveness of different scalding technologies (TANK vs. TUNNEL) in reducing boar taint compounds (androstenone, skatole, indole) in boar backfat.
  • To differentiate between pre- and post-mortem effects of scalding on taint compound levels.
  • To assess the potential of scalding as a strategy to mitigate boar taint before the EU castration ban.

Main Methods:

  • Analysis of androstenone, skatole, and indole in boar backfat samples from two abattoirs.
  • Comparison of horizontal (TANK) and vertical (TUNNEL) scalding methods.
  • Gas chromatography (GC) for androstenone and liquid chromatography (LC) for skatole and indole analysis.
  • Sampling of carcasses before and after scalding to assess ante- and post-mortem impacts.

Main Results:

  • Neither TANK nor TUNNEL scalding significantly reduced the levels of malodorous compounds (androstenone, skatole, indole).
  • Average concentrations of skatole and androstenone in backfat post-scalding were 112 ± 123 ng/g and 1196 ± 885 ng/g, respectively.
  • Significant differences in skatole levels were observed between abattoirs, potentially linked to transport duration.
  • Based on sensory rejection thresholds, approximately 30% of carcasses may exhibit unacceptable boar taint.

Conclusions:

  • Current scalding technologies (TANK and TUNNEL) are ineffective in reducing boar taint compounds in male pig backfat.
  • The findings suggest that scalding alone cannot solve the boar taint issue.
  • The high percentage of potentially tainted carcasses highlights the need for alternative strategies to manage boar taint in the absence of castration.