Some remarks about spreading of Dermanyssus gallinae in Italy Vito - - PowerPoint PPT Presentation

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Some remarks about spreading of Dermanyssus gallinae in Italy Vito - - PowerPoint PPT Presentation

Oct 03, 2022 436 likes •555 views

Some remarks about spreading of Dermanyssus gallinae in Italy Vito Mastrangelo London, November 2013 Survey datas have been kindly provided by Prof. Antonio Camarda* and Maria Assunta Cafiero ** *Department of Veterinary Medicine University of

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Some remarks about spreading of Dermanyssus gallinae in Italy

Vito Mastrangelo London, November 2013

Survey datas have been kindly provided by Prof. Antonio Camarda* and Maria Assunta Cafiero ** *Department of Veterinary Medicine University of Bari (Italy) **Istituto Zooprofilattico Sperimentale della Puglia e Basilicata (Italy)

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  • 26

1.000 - 5.000

  • 14

5.100 - 20.000

  • 13

20.100 - 50.000

  • 5

50.100 - 160.000

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43 FARMS OF 58 RESULTED INFESTED BY DERMANYSSUS GALLINAE

Infested farms 74% Negative farms 26%

Results

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10 20 30 40 50 60

51,7% OF THE FARMERS DECLARED THE PRESENCE OF THE MITES IN THEIR FARM 48,3% OF THE FARMERS DECLARED AN HIGHER INFECTION DURING SUMMER

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Symptoms which the farmers associate with the infestation by Dermanyssus gallinae

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20 40 60 80

74,1% OF THE FARMERS USE ACARICIDES

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10 20 30 40 50

Seasonality of the treatment Frequency of the treatment

ONLY 2 FARMERS TREAT WHEN THE FARM IS EMPTY 48,8% OF THE FARMERS DECLARE TO TREAT IN SUMMER TIME ONLY

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Poultry activity and business are also concerned by the following Dermanyssus gallinae correlated aspects:

  • Decrease of eggs production (table eggs and hatching eggs)
  • Mortality of embryos (Layer and Broiler chicks production)
  • Poor egg quality (shell aspect and strenght)
  • Overall mortality increase
  • Negative effects on health of:
  • Rearing Pullets
  • Breeders, laying hens and broilers
  • Farm workers
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Due to the entity of the Italian global layers’ capital (over 42Ml. birds) and the domestic large average farms’ size, our farmers and the national association (Assoavi) are deeply concerned about red mite impact on the whole egg chain at technical and economical level. So, further investigations, studies and innovative products are welcome. Growing concerns linked to the use of conventional chemical treatments, are increasing interest in alternative methods to control DG in poultry farms. Among them, feed integration with vegetable extracts and /or minerals as:

  • extracts of Withania somnifera and Ocimum sanctum;
  • extracts of Mangifera indica, Mucuna pruriens and Boerhavia diffusa;
  • extract of Allium sativum;
  • organic silica.
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Thanks for your kind attention!

Vito Mastrangelo Assoavi