Construction and Operation of a Ventilated Hood System for Measuring Greenhouse Gas and Volatile Organic Compound Emissions from Cattle

Place, Sara; Pan, Yuee; Zhao, Yongjing

doi:10.3390/ani1040433

Cited by 40 publications

(41 citation statements)

References 13 publications

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“…Odongo et al, 2008;Suzuki et al, 2008;Place et al, 2011). The technique involves the use of a box or hood that surrounds the animal"s head and air drawn through the hood is analyzed for incoming and exhaust air CH 4 concentration.…”

Section: Respiration Chambers and Enclosuresmentioning

confidence: 99%

Review of current in vivo measurement techniques for quantifying enteric methane emission from ruminants

Hammond

Crompton

Bannink

et al. 2016

Animal Feed Science and Technology

136

139

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Review of current in vivo measurement techniques for quantifying enteric methane emission from ruminants.Animal Feed Science and Technology http://dx.doi.org/10. 1016/j.anifeedsci.2016.05.018 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. techniques based on short-term measurements of gas concentrations in samples of exhaled air. This includes automated head chambers (e.g. the GreenFeed system), the use of carbon dioxide (CO 2 ) as a marker, and (handheld) laser CH 4 detection. Each of the techniques are compared and assessed on their capability and limitations, followed by methodology recommendations. It is concluded that there is no "one size fits all" method for measuring CH 4 emission by individual animals. Ultimately, the decision as to which method to use should be based on the experimental objectives and resources available. However, the need for high throughput methodology e.g. for screening large numbers of animals for genomic studies, does not justify the use of methods that are inaccurate. All CH 4 measurement techniques are subject to experimental variation and random errors. Many sources of variation must be considered when measuring CH 4 concentration in exhaled air samples without a quantitative or at least regular collection rate, or use of a marker to indicate (or adjust) for the proportion of exhaled CH 4 sampled. Consideration of the number and timing of measurements relative to diurnal patterns of CH 4 emission and respiratory exchange are important, as well as consideration of feeding patterns and associated patterns of rumen 4 fermentation rate and other aspects of animal behaviour. Regardless of the method chosen, appropriate calibrations and recovery tests are required for both method establishment and routine operation. Successful and correct use of methods requires careful attention to detail, rigour, and routine self-assessment of the quality of the data they provide.

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Section: Respiration Chambers and Enclosuresmentioning

confidence: 99%

Review of current in vivo measurement techniques for quantifying enteric methane emission from ruminants

Hammond

Crompton

Bannink

et al. 2016

Animal Feed Science and Technology

136

139

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“…Modern ventilated hood systems for methane measurements have been used in Japan, Thailand (Suzuki et al 2007(Suzuki et al , 2008, USA (Place et al 2011 ), Canada ) and Australia (Takahashi et al 1999 ). Fernández et al ( 2012 ) describes a mobile, open-circuit respiration system.…”

Section: Ventilated Hood Systemmentioning

confidence: 99%

A Comparison of Methodologies for Measuring Methane Emissions from Ruminants

Goopy

Chang

Tomkins

2016

Methods for Measuring Greenhouse Gas Balances and Evaluating Mitigation Options in Smallholder Agriculture

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Accurate measurement techniques are needed for determining greenhouse gas (GHG) emissions in order to improve GHG accounting estimates to IPCC Tiers 2 and 3 and enable the generation of carbon credits. Methane emissions from agriculture must be well defi ned, especially for ruminant production systems where national livestock inventories are generated. This review compares measurement techniques for determining methane production at different scales, ranging from in vitro studies to individual animal or herd measurements. Feed intake is a key driver of enteric methane production (EMP) and measurement of EMP in smallholder production systems face many challenges, including marked heterogeneity in systems and feed base, as well as strong seasonality in feed supply and quality in many areas of sub-Saharan Africa.In vitro gas production studies provide a starting point for research into mitigation strategies, which can be further examined in respiration chambers or ventilated hood systems. For making measurements under natural grazing conditions, methods include the polytunnel, sulfur hexafl uoride (SF 6 ), and open-path laser. Developing methodologies are briefl y described: these include blood methane concentration, infrared thermography, pH, and redox balance measurements, methanogen population estimations, and indwelling rumen sensors.

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“…It also requires less space and is mounted on a cart with wheels so that it can be moved from one location to another. According to Place et al (2011), the ventilated hood systems are more accurate than the SF 6 tracer technique that will be explained later in the chapter. The biggest critique of the technique is that the animal is restrained and therefore needs to adapt to the system.…”

Section: Open-circuit Ventilated Hood Systemmentioning

confidence: 99%

“…Odongo et al (2008) also used the same principles of the whole animal chamber along with the previous hood system to create an opencircuit ventilated hood system for estimating methane emitted from lactating Holstein dairy cattle under two diet treatments. Furthermore, Place et al (2011) utilized basic dimensions and design from both Kelly et al (1994) and Odongo et al (2008) to construct a ventilated hood system that measures greenhouse gases and volatile organic compound emissions. Because the headboxes are made out of clear polycarbonate material, cattle can have a full range of vision while they are temporarily placed in the headboxes for sampling (Place et al 2011).…”

Section: Open-circuit Ventilated Hood Systemmentioning

confidence: 99%

“…Furthermore, Place et al (2011) utilized basic dimensions and design from both Kelly et al (1994) and Odongo et al (2008) to construct a ventilated hood system that measures greenhouse gases and volatile organic compound emissions. Because the headboxes are made out of clear polycarbonate material, cattle can have a full range of vision while they are temporarily placed in the headboxes for sampling (Place et al 2011). By having a full range of vision and movement, the animal can be more comfortable and less stressed.…”

Section: Open-circuit Ventilated Hood Systemmentioning

confidence: 99%

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Estimation Methodologies for Enteric Methane Emission in Ruminants

Cersosimo

Wright

2015

Climate Change Impact on Livestock: Adaptation and Mitigation

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As enteric methane emissions from ruminants contribute to feed inefficiency and global warming, methodologies to measure the enteric methane from either the individual ruminant or the herd are needed. Therefore, methane emission estimations in ruminants may provide insight into potential methane mitigation strategies. Furthermore, the use of methane emission methodologies enables researchers to compare and contrast methane emissions from different diets, breeds, and geographical locations and to evaluate mitigation strategies. This chapter describes key methane estimation methodologies previously and currently used in research and highlights the advantages and disadvantages of each methodology. Key in vivo techniques include open-and closed-circuit respiration chambers, open-circuit hood systems, sulfur hexafluoride (SF 6 ) tracer, polythene tunnel system, methane/carbon dioxide ratio, GreenFeed, infrared (IR) thermography, laser methane detector, and the intraruminal gas measurement device. Furthermore, the in vitro gas technique (IVGT) estimates the methane emissions from different dairy rations. Theoretical methodologies include the rumen fermentation balance, COWPOLL ruminant digestion model, and the Cattle Enteric Fermentation Model (CEFM). Although there are several different types of methane estimation methodologies, the cost, species, accuracy of the technique, maintenance, and the environment of the ruminant are all contributing factors in choosing which technique to apply to a study.

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Construction and Operation of a Ventilated Hood System for Measuring Greenhouse Gas and Volatile Organic Compound Emissions from Cattle

Cited by 40 publications

References 13 publications

Review of current in vivo measurement techniques for quantifying enteric methane emission from ruminants

Review of current in vivo measurement techniques for quantifying enteric methane emission from ruminants

A Comparison of Methodologies for Measuring Methane Emissions from Ruminants

Estimation Methodologies for Enteric Methane Emission in Ruminants

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