Authors: Magali-Wen St-Germain, Araceli Dalila Larios Martinez, Val?rie L?tourneau, St?phane Godbout, Caroline Duchaine
Identifier: CSBE21192
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Published in: CSBE-SCGAB Technical Conferences » 5th CIGR and AGM Quebec City 2021 » 4th international Symposium on Gas Emissions and Dust from Livestock (EMILI)

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Description: The new Code of Practice for the Care and Handling of Pullets and Laying Hens (2017) mandates the transition from conventional cages to alternative housing systems. Among them, cage-free eggs production systems (CFS) provide space for improved freedom of movement for each animal. CFS also contain litter, so hens can perform natural behaviors such as foraging and dustbathing. Although beneficial for animal welfare, CFS may lead a negative impact on air quality and respiratory health of workers and animals. Thus, the Research and Development Institute for the Agri-Environment (IRDA) studied strategies to mitigate dust and ammonia, both common air contaminants in hen housing: 1) decrease of litter surface area; 2) oil-emulsion sprinkling; 3) heated floor combined with an oil-emulsion sprinkling; 4) litter amendment with biochar combined with an oil-emulsion sprinkling). Emissions of air contaminants (dust, ammonia, endotoxins and microorganisms) per day per hens were studied in treated experimental CFS and compared to those of non-treated systems. Reduction efficiencies (%) of emitted air contaminants were used to evaluate the impact of the strategies on air quality and bioaerosols. Oil-based strategies reduced from 87 to 98% of dust particles of all size fractions. However, no effect on ammonia, cultivable bacteria and mold and human and animal pathogenic agents emissions was observed while reduction efficiencies of the strategies endotoxin emissions still need to be confirmed by upcoming analysis.

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Date: 2021-06-11
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Conference name: 5th CIGR International Conference and CSBE-SCGAB AGM 2021, Quebec City,QC, 11-14 May 2021.
Session name: 4th international Symposium on Gas Emissions and Dust from Livestock (EMILI) 5 - Mitigation Strategies

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Type: Text.Abstract
Publication type: Presentation
Coverage: Canada
Language 1: en
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Rights: Canadian Society for Bioengineering
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