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Exposure Assessment of TSEs from the Landspreading of Meat and Bone Meal

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  • Enda Cummins
  • Amie Adkin

Abstract

Recent changes in European legislation have meant that certain processed abattoir waste, which has been appropriately heat treated and ground to a specified particle size, can be spread on nonpasture agricultural land. This has opened the way for the potential landspreading of mammalian meat and bone meal (mMBM) derived from animals slaughtered for human consumption. This article reports on two separate case studies (Study 1 carried out in Great Britain (GB) and Study 2 carried out in Ireland) on the potential exposure to TSE infectivity following the spreading of abattoir waste (derived from animals slaughtered for human consumption) on nonpasture agricultural land. For Study 1, the average TSE infectivity on nonpasture agricultural land per year from sheep with scrapie was found to be higher (five orders of magnitude) than that estimated for BSE in cattle (3.9 × 10−3 Ovine Oral ID50/ton of soil compared to 3.3 × 10−8 Bovine Oral ID50/ton of soil). The mean estimate for BSE in sheep was 8.1 × 10−6 Ovine Oral ID50/ton of soil. The mean level of infectivity in mMBM was assessed to be 1.2 × 10−5 and 2.36 × 10−5 ID50/ton of mMBM for Study 1 and 2, respectively. For Study 2 the spreading of mMBM was estimated to result in infectivity on nonpasture land of 1.62 × 10−8 Bovine Oral ID50/m3. The mean simulated probability of infection per year per bovine animal was 1.11 × 10−9. Given the low infectivity density and corresponding low risks to bovines the spreading of mMBM could be considered a viable alternative for the utilization of mMBM.

Suggested Citation

  • Enda Cummins & Amie Adkin, 2007. "Exposure Assessment of TSEs from the Landspreading of Meat and Bone Meal," Risk Analysis, John Wiley & Sons, vol. 27(5), pages 1179-1202, October.
  • Handle: RePEc:wly:riskan:v:27:y:2007:i:5:p:1179-1202
    DOI: 10.1111/j.1539-6924.2007.00953.x
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    References listed on IDEAS

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    1. Jim Moynagh & Heinz Schimmel, 1999. "Tests for BSE evaluated," Nature, Nature, vol. 400(6740), pages 105-105, July.
    2. N. M. Ferguson & A. C. Ghani & C. A. Donnelly & T. J. Hagenaars & R. M. Anderson, 2002. "Estimating the human health risk from possible BSE infection of the British sheep flock," Nature, Nature, vol. 415(6870), pages 420-424, January.
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    Cited by:

    1. Amie Adkin & Neil Donaldson & Louise Kelly, 2013. "A Quantitative Assessment of the Amount of Prion Diverted to Category 1 Materials and Wastewater During Processing," Risk Analysis, John Wiley & Sons, vol. 33(7), pages 1197-1211, July.
    2. Clazien J. De Vos & Lourens Heres, 2009. "The BSE Risk of Processing Meat and Bone Meal in Nonruminant Feed: A Quantitative Assessment for the Netherlands," Risk Analysis, John Wiley & Sons, vol. 29(4), pages 541-557, April.

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