Measurement

Aim: to validate a rapid, low cost system for measuring methane.

Lead research organisation

DairyNZ

Latest progress

New project in 16/17

  • What are micro-meteorological techniques for measuring methane?

    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...

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  • What are portable accumulation chambers

    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...

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  • What are respiration chambers?

    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...

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  • What is the SF6 tracer technique?

    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...

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  • Why do we need to measure?

    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,...

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