Methane conversion rate of bulls fattened on grass or maize silage as compared with the IPCC default values, and the long-term methane mitigation efficiency of adding acacia tannin, garlic, maca and lupine

Staerfl, S.M.; Zeitz, Johanna O.; Kreuzer, Michael; Soliva, Carla R.

doi:10.1016/j.agee.2011.11.003

Cited by 65 publications

(61 citation statements)

References 39 publications

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“…The horizontal line denotes the IPCC (2006) default value of 6.5% together with its uncertainty range of +1% (grey area). Data sources: Mu¨nger (1997), Hindrichsen et al (2006aHindrichsen et al ( , 2006b), Klevenhusen et al (2010), van Dorland et al (2006, Estermann et al (2002), Staerfl et al (2012). 2000), this default value was 6% for developed countries like Switzerland, whereas it was 6% or 7% for cattle or buffaloes kept in developing countries depending on livestock category and diet type. The revised default value for Y m (IPCC 2006) will be applied in the Swiss GHG inventory from 2013 onwards, unless country-specific data have been submitted to, and approved by, the IPCC until then.…”

Section: Methane-conversion Rate In Swiss Cattle Production Systemsmentioning

confidence: 99%

“…Growing Brown Swiss 6 Limousin crossbred bulls were fattened in Experiment 10 (Staerfl et al 2012). The bulls were fed either grass silage or maize silage at ad libitum access.…”

Section: Beef Productionmentioning

confidence: 99%

“…Finally, the standardised in vitro incubation technique described by Hashimoto (1989) was applied in Experiment 10 (Staerfl et al 2012). Serum bottles filled with 170 ml liquid consisting of 84.8% test slurry, 7.6% inoculum (previously incubated slurry) and 7.6% water (Sommer et al 2007) served as incubation units.…”

Section: Techniques Applied To Measure Enteric and Manure-derived Metmentioning

confidence: 99%

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Swiss diet types for cattle: how accurately are they reflected by the Intergovernmental Panel on Climate Change default values?

Zeitz

Soliva

Kreuzer

2012

Journal of Integrative Environmental Sciences

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In Switzerland, a considerable part of the country is mountainous. Forage-based diets dominate, as crop production and feed import are limited. Long winter periods require large amounts of conserved feeds. This results in diet types where the current Intergovernmental Panel on Climate Change (IPCC) default values for enteric and manure-derived methane may not be fully appropriate. In 10 experiments carried out in Switzerland, methane emission data were obtained from various forage-based diet types. This included enteric (open-circuit respiratory chambers) and manure-derived methane (various techniques). In dairy cows and suckler cow-calf pairs, the methane-conversion rate (Y m , methane energy, % of gross energy intake) was 7.1% (5.9-8.0) and 8.1% (7.8-8.5), respectively (IPCC default value: 6.5%). In fattening bulls, Y m increased from 4.5% to 5.4% during fattening (default: 6.5%). In the slurry of fattening bulls and dairy cows, the methane-conversion factor (% of maximum slurry-methane emission potential realised) was 0.9% and 5.3% on average when incubated at 14 and 278C (means of 7 and 14 weeks storage), respectively (default: 15% and 48%). Accordingly, IPCC default values overestimate enteric methane emissions of Swiss forage-based fattening bulls and underestimate those of suckler beef cow-calf pairs. For dairy cows, Y m remained within the current uncertainty range given by IPCC.

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Section: Methane-conversion Rate In Swiss Cattle Production Systemsmentioning

confidence: 99%

“…Growing Brown Swiss 6 Limousin crossbred bulls were fattened in Experiment 10 (Staerfl et al 2012). The bulls were fed either grass silage or maize silage at ad libitum access.…”

Section: Beef Productionmentioning

confidence: 99%

Section: Techniques Applied To Measure Enteric and Manure-derived Metmentioning

confidence: 99%

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Swiss diet types for cattle: how accurately are they reflected by the Intergovernmental Panel on Climate Change default values?

Zeitz

Soliva

Kreuzer

2012

Journal of Integrative Environmental Sciences

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“…According to Tamminga (1992), the diet management was made with minimal if any concern about the nitrogen excretion in feces and urine. Nowadays, the environmental impact of animal feeding operations is a growing concern (Cole et al, 2006;Staerfl et al, 2012;Patra and Lalhriatipuii, 2016).…”

Section: Introductionmentioning

confidence: 99%

Nutrient Requirements of Zebu and Crossbred Cattle - BR-CORTE

Filho¹,

Silva²,

Gionbelli³

et al. 2016

Exigências Nutricionais De Zebuínos Puros E Cruzados - BR-CORTE

121

155

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“…Although recent studies conducted at the animal husbandry level in Switzerland (Staerfl et al, 2012;Zeitz et al, 2012) showed that using countryspecific EFs would not substantially alter the total estimate of livestock CH 4 emissions, high uncertainty remains, as differing farming practices can have significant impacts on the EFs (Lowry et al, 2001;Saggar et al, 2004;Christie et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Validation of farm-scale methane emissions using nocturnal boundary layer budgets

et al. 2015

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Abstract. This study provides the first experimental validation of Swiss agricultural methane emission estimates at the farm scale. We measured CH 4 concentrations at a Swiss farmstead during two intensive field campaigns in August 2011 and July 2012 to (1) quantify the source strength of livestock methane emissions using a tethered balloon system and (2) to validate inventory emission estimates via nocturnal boundary layer (NBL) budgets. Field measurements were performed at a distance of 150 m from the nearest farm buildings with a tethered balloon system in combination with gradient measurements at eight heights on a 10 m tower to better resolve the near-surface concentrations. Vertical profiles of air temperature, relative humidity, CH 4 concentration, wind speed, and wind direction showed that the NBL was strongly influenced by local transport processes and by the valley wind system. Methane concentrations showed a pronounced time course, with highest concentrations in the second half of the night. NBL budget flux estimates were obtained via a time-space kriging approach. Main uncertainties of NBL budget flux estimates were associated with nonstationary atmospheric conditions and the estimate of the inversion height z i (top of volume integration). The mean NBL budget fluxes of 1.60±0.31 µg CH 4 m −2 s −1 (1.40±0.50 and 1.66 ± 0.20 µg CH 4 m −2 s −1 in 2011 and 2012 respectively) were in good agreement with local inventory estimates based on current livestock number and default emission factors, with 1.29 ± 0.47 and 1.74 ± 0.63 µg CH 4 m −2 s −1 for 2011 and 2012 respectively. This indicates that emission factors used for the national inventory reports are adequate, and we conclude that the NBL budget approach is a useful tool to validate emission inventory estimates.

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Methane conversion rate of bulls fattened on grass or maize silage as compared with the IPCC default values, and the long-term methane mitigation efficiency of adding acacia tannin, garlic, maca and lupine

Cited by 65 publications

References 39 publications

Swiss diet types for cattle: how accurately are they reflected by the Intergovernmental Panel on Climate Change default values?

Swiss diet types for cattle: how accurately are they reflected by the Intergovernmental Panel on Climate Change default values?

Nutrient Requirements of Zebu and Crossbred Cattle - BR-CORTE

Validation of farm-scale methane emissions using nocturnal boundary layer budgets

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