

Aim: to validate a rapid, low cost system for measuring methane.
New project in 16/17
01/09/16
Other methane measurement techniques provide estimates of emissions from individual animals. This raises the question whether the animals that have been measured are representative of average emissions coming from an entire herd over long...
31/08/16
HOW THEY WORKCommonly, these are a sheepsized transparent polycarbonate box suspended above a race. When a sheep walks into the race, the chamber is lowered over it and the sheep is held inside for about 30 minutes. Air samples are taken during...
31/08/16
How they work Respiration chambers are animal-friendly closed circuit containers in which animals are contained while their gas output is measured. The New Zealand Animal Ruminant Methane Measurement Centre at AgResearch, part-funded by the...
31/08/16
How they work This technique was devised to answer the question ‘How much methane does an animal grazing freely in a field produce over a given period (usually one 24-hour feeding cycle)?’ Sulphur hexafluoride (SF6) is an inert gas...
31/08/16
Agriculture produces greenhouse gas emissions in a number of ways: direct emissions by livestock, emissions from the production of livestock feed, energy use in fertiliser manufacture, farm operations such as milking, refrigeration and housing,...