Control of ammonia emissions in naturally ventilated dairy cattle facilities in Portugal

Pereira, José; Trindade, Henrique

doi:10.1590/s0100-69162014000300022

Cited by 7 publications

(7 citation statements)

References 28 publications

(61 reference statements)

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“…The length of the wind tunnel is 6.0 m. The wind tunnel is made of chemically stable material: stainless steel. The temperature and humidity of the air entering and leaving the manure chamber were measured with temperature and humidity sensors (8) connected to the Almemo 2590-9 system (14). Measuring range: temperatures from −30 to 60 °C; relative humidity from 5 to 98%; accuracy of the device ±0.1%.…”

Section: Research Methodology In Laboratory Conditionsmentioning

confidence: 99%

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Ammonia Emissions from Cattle Manure under Variable Moisture Exchange between the Manure and the Environment

Bleizgys

Naujokienė

2023

Agronomy

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When reducing ammonia emissions from cowsheds, it is recommended to reduce the ventilation intensity, air temperature in the barn, manure moisture by using bedding and manure-contaminated surfaces, and to prevent urine from accumulating in the airways. Using the mass flow method in the wind tunnel, after research on seven types of cattle manure with different moisture contents, it was found that ammonia evaporates up to 3.9 times more intensively from liquid manure than from solid manure. There is a strong correlation between ammonia and water evaporation from manure. Ammonia emission from liquid manure decrease by 2.0–2.3 times, emissions from solid manure decrease by 1.9–2.1 times. Different cowsheds have different opportunities to reduce air pollution and conditions for manure to dry and crusts to form on the surface. The best results will be achieved by applying complex measures to reduce air pollution.

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Section: Research Methodology In Laboratory Conditionsmentioning

confidence: 99%

“…In the German livestock industry, most ammonia is emitted in naturally ventilated barns [13]. This view is shared by researchers in other countries [14]: naturally ventilated dairy barns are one of the main sources of ammonia and greenhouse gas emissions to the atmosphere. It is difficult to clean the air in these barns.…”

Section: Introductionmentioning

confidence: 99%

Ammonia Emissions from Cattle Manure under Variable Moisture Exchange between the Manure and the Environment

Bleizgys

Naujokienė

2023

Agronomy

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“…Naturally ventilated cattle barns pose many methodical issues for the analysis of gas emissions, no precise methods for measuring the gas spread are available, the ventilation rate is difficult to be found (Teye et al, 2008;Kaasik et al, 2013;Bleizgys et al, 2013). Researchers that have studied the microclimate in barns of this particular type have found that processes of NH3 emissions and air pollution are difficult to control there (Bjerg et al, 2013;Rzeznik et al, 2016;Samer et al, 2012;Pereira et al, 2014;Mendes et al, 2015;Zhao et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Reduction of Ammonia Emissions From Cattle Manure Using Biopreparations

Bleizgys

Mažeikienė

2018

Proccedings of International Scientific Conference "RURAL DEVELOPMENT 2017"

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Experimental studies performed at the laboratory enabled to find out the effect of the biopreparation on the process of ammonia volatilization from manure. Adding biopreparation to manure was found to slow down ammonia emission from manure. Depending on the manure composition, temperature of the environment, and duration of exposure to the biopreparation, the emission was found to decrease by up to 22 %. The maximum effect was observed on the day 6–14, whereas 30 days after biopreparation’s use its effect was significantly decreased. The effect of biopreparation on ammonia volatilization was observed to be higher under more intensive ammonia emissions, i.e. when the manure was fresh, with no crust formed on its surface, under high air flow velocity above the manure and high ammonia concentration gradient in the surface of the manure. Use of the biopreparation is highly recommended for reduction of ammonia emissions in litter-free barns where liquid manure accumulates. Its use is consistent with the modernization tendencies to implement litter-free liquid manure technologies.

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“…The most common liquid manure handling systems for cows in Europe are scraping and flushing systems where a mixture of urine, faeces and litter materials (i.e., cattle slurry) are drained together from housing to manure storage facilities (Pereira & Trindade, 2014). Then, the cattle slurry stored is applied to land as organic fertiliser.…”

mentioning

confidence: 99%

“…Previous studies (Hristov et al, 2011;Pereira & Trindade, 2014) intensive dairy farm. On the other hand, the reduction of replacement animals (heifers) has a similar effect than high milk production per cow and could reduce NH 3 and GHG emissions in farms.…”

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confidence: 99%

Short communication: Impact of the intensity of milk production on ammonia and greenhouse gas emissions in Portuguese cattle farms

Pereira

Trindade

2015

Span. j. agric. res.

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The aim of this study was evaluate the relationship between the intensity of milk production for a wide range of Portuguese commercial cattle farms and NH 3 and greenhouse gas (GHG) emissions from manure management and enteric fermentation. A survey was carried out at 1471 commercial dairy cattle farms (Holstein-Friesian) and the NH 3 , N 2 O and CH 4 emissions at each stage of manure management were estimated as well as CH 4 losses from enteric fermentation. Gaseous emissions were estimated by a mass flow approach and following the recommendations of IPCC guidelines. The manure management and enteric fermentation in a typical Portuguese cattle farm contributes with 7.5±0.15 g N/L milk produced as NH 3 and 1.2±0.22 kg CO 2 equivalent per litre of milk as GHG. Increasing milk production will significantly reduce NH 3 and GHG emissions per litre of milk produced. It can be concluded that a win-win strategy for reducing NH 3 and GHG emissions from dairy cattle farms will be the increase of milk production on these farms. This goal can be achieved by implementing animal breeding programs and improving feed efficiency in order to increase productivity.Additional key words: dairy cattle; enteric fermentation; gaseous emissions; manure management.

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Control of ammonia emissions in naturally ventilated dairy cattle facilities in Portugal

Cited by 7 publications

References 28 publications

Ammonia Emissions from Cattle Manure under Variable Moisture Exchange between the Manure and the Environment

Ammonia Emissions from Cattle Manure under Variable Moisture Exchange between the Manure and the Environment

Reduction of Ammonia Emissions From Cattle Manure Using Biopreparations

Short communication: Impact of the intensity of milk production on ammonia and greenhouse gas emissions in Portuguese cattle farms

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