Know more

Introduction

This procedure is probably at the present time the simplest to measure the emissions of a layer house. The matter balance can be either measured or calculated starting from productions references (species animal, weight, food) and manure composition values representative of the studied case.

The results accuracy will strongly depend on the frequency of the gas observations. It is important to be able to define exactly the inputs and outputs of the house.

Initially it is necessary to carry out a matter balance on the volatile and nonvolatile compounds. It will compare the opening and final inventories. In the second time, the house atmosphere is either sampled, or analyzed directly to know volatile in cash nitrogen, water and carbon contents.

Equipment

• Clothing for animal farm (disposable coat and boots or specific clothing of the animal farm)
• Material for taking notes
• Material of cleaning and disinfection of equipment after the measurements
• Gas Analyzer (for example infra-red photoacoustics analyzer INNOVA® 1312 with filters CO2, CO, CH4, NH3, N2O, H2O)
• 1 TEDLAR® bag for the sampling of outside air
• 1 TEDLAR® bag for the sampling of inside air
• Thermo Hygromètre to characterize the temperature and hygrometry inside and outside the house
• Air pump (for example aerator of aquarium)
• Filters (Milipore Millex- HV Hydrophile PVDF 0,45 μm) placed at entry of the sampling system, one for outside and one for the inside air
• PTFE tubes to connect filters, bags, pumps and analyzer gas
• If necessary, add the material for samplings of feeds

Guideline details

File (PDF)