Authors: Jos? L. S. Pereira , S?lvia Ferreira , Victor Pinheiro , Henrique Trindade
Identifier: CSBE21129
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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: Broiler husbandry is a significant source of gaseous emissions and will require economical and simple mitigation techniques that can be used by farmers. The aim of this study was to assess the NH3, N2O, CO2 and CH4 emission rates from commercial breeding hen and broiler houses under Mediterranean climate conditions. Research was conducted at two identical commercial breeding hen houses and in two similar commercial broiler houses located in central Portugal: one house was a control and the other was treated with litter additive. Considering a first set of controlled experiments, clinoptilolite was selected as additive for treated hen house whereas magnesium sulphate was applied as additive for broiler house. The environmental conditions, gas concentrations and ventilation rates were collected in 2017 and 2018. Results showed that the annual average emission rates for breeding hen and broiler houses were 0.52?0.27 and 0.06?0.01 for NH3, 0.030?0.042 and 0.006?0.001 for N2O, 169.6?56.2 and 58.0?15.1 for CO2 and 0.092?0.131 and 0.0113?0.0002 g day-1 bird-1 for CH4, respectively. The application of clinoptilolite on the litter of a breeding hen house reduces the NH3 and N2O losses in 28 and 34%, respectively, but appears to have no effect on CO2 losses. The application of magnesium sulphate was a good mitigation technique to reduce NH3 and N2O emissions from broiler houses. The annual average emission rates of untreated house were reduced by 45% for NH3 and 25% for N2O by the application of magnesium sulphate whereas CO2 and CH4 emission rates were increased in about 20%.

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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) 3 - Mitigation Strategies

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