Dust, ammonia and greenhouse gas emissions associated with three housing types for laying hens Philippe, F.X. 1 , Larouche, J.P. 2 , Palacios, J. 2 , Pelletier, F. 2 , Mahmoudi, Y. 2, 3 , Godbout, S. 2, 3 1 Faculty of Veterinary Medicine, University of Liège, Liège, Belgium; 2 Institute for Research and Development in Agroenvironment, Québec, Canada; 3 Faculty of Agriculture and Food Sciences, University Laval, Québec, Canada
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Dust, ammonia and greenhouse gas emissions associated with three housing types for laying hens
1 Faculty of Veterinary Medicine, University of Liège, Liège, Belgium;2 Institute for Research and Development in Agroenvironment, Québec, Canada;
3 Faculty of Agriculture and Food Sciences, University Laval, Québec, Canada
Dust, ammonia and greenhouse gas emissions associated with three housing types for laying hens
EMILI 2017 - 3rd International Symposium on Emissions of Gas and Dust from Livestock – May 21-24 2017, Saint-Malo, France
Dust, ammonia and greenhouse gas emissions associated with three housing types for laying hens
Material and methods – Experimental design
• 12 pilot-scale chambers (1.2 m width, 2.4 m height, 2.4 m length)• 3 treatments : Battery cage (BC) – Enriched cage (EC) – Aviary (AV)• 360 Lohmann LSL-Lite laying hens (30 birds per chambers)• Commercial diet ad libitum (17.1% CP, 11.5 kJ ME)• 70 days of measurement from week 23 to 32 of hen’s age
EMILI 2017 - 3rd International Symposium on Emissions of Gas and Dust from Livestock – May 21-24 2017, Saint-Malo, France
Dust, ammonia and greenhouse gas emissions associated with three housing types for laying hens
Battery cage (BC) Enriched cage (EC) Aviary (AV)
EMILI 2017 - 3rd International Symposium on Emissions of Gas and Dust from Livestock – May 21-24 2017, Saint-Malo, France
Material and methods – Housing conditions
Dust, ammonia and greenhouse gas emissions associated with three housing types for laying hens
Battery cage (BC) Enriched cage (EC) Aviary (AV)
EMILI 2017 - 3rd International Symposium on Emissions of Gas and Dust from Livestock – May 21-24 2017, Saint-Malo, France
Material and methods – Housing conditions
Dust, ammonia and greenhouse gas emissions associated with three housing types for laying hens
Battery cage (BC) Enriched cage (EC) Aviary (AV)
EMILI 2017 - 3rd International Symposium on Emissions of Gas and Dust from Livestock – May 21-24 2017, Saint-Malo, France
Material and methods – Housing conditions
Dust, ammonia and greenhouse gas emissions associated with three housing types for laying hens
EMILI 2017 - 3rd International Symposium on Emissions of Gas and Dust from Livestock – May 21-24 2017, Saint-Malo, France
• Ambient parameters (ventilation, T°, RH)
• Production performance (body weights, feed/water intakes, laying rate)
• Manure characteristics (amount, composition)
• Gas concentration and emissionsTotal dust (sampling rate of 2 L/min, 1 filter/chamber.week)NH3 (non-dispersive infrared analyser)CH4 and CO2 (gas chromatography)
Material and methods - Measurements
Dust, ammonia and greenhouse gas emissions associated with three housing types for laying hens
EMILI 2017 - 3rd International Symposium on Emissions of Gas and Dust from Livestock – May 21-24 2017, Saint-Malo, France
Results and discussion – Ambient conditions
Battery cage (BC) Enriched cage (EC) Aviary (AV)
Temperature (°C) 19.8a 19.7a 20.3b
Relative humidity (%) 28.5a 26.5b 28.5a
Ventilation rate (m3 h-1 hen-1) 4.14a 3.95b 4.29c
Dust, ammonia and greenhouse gas emissions associated with three housing types for laying hens
EMILI 2017 - 3rd International Symposium on Emissions of Gas and Dust from Livestock – May 21-24 2017, Saint-Malo, France
Results and discussion – Production performance
Battery cage (BC) Enriched cage (EC) Aviary (AV)
Initial weight (kg) 1.516a 1.524a 1.519a
Final weight (kg) 1.692a 1.605b 1.587b
Weight gain (kg) 175.3a 78.7b 64.6b
Laying rate (%) 96.3a 96.6a 77.2b
Egg weight (g) 59.6a 59.3a 58.6b
Feed intake (g day-1) 123.4a 119.9ab 117.8ab
Feed conversion
(kg feed dz-1 eggs) 1.61a 1.60a 2.12b
(kg feed kg-1 eggs) 2.26a 2.24a 3.03b
Water intake
(mL day-1) 188.9a 177.8a 189.7a
(L kg-1 feed) 1.65a 1.65a 1.79b
Dust, ammonia and greenhouse gas emissions associated with three housing types for laying hens
EMILI 2017 - 3rd International Symposium on Emissions of Gas and Dust from Livestock – May 21-24 2017, Saint-Malo, France