FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2751365372> ?p ?o ?g. }

• W2751365372 endingPage "227" @default.
• W2751365372 startingPage "215" @default.
• W2751365372 abstract "<abstract> <b><sc>Abstract.</sc></b> The objective of this study was to conduct a systematic review of the published literature on ammonia (NH₃) emissions from beef feedlots and dairy barns using a meta-analytical approach in order to improve the estimation of emission rates, to understand the sources of variation, and to specifically quantify the effects of air temperature and dietary crude protein (CP) on NH₃ emissions. Emissions from lagoons or other manure storage facilities were not included. The review compiled results from 91 studies (published from 1997 to 2016) and from the five dairy sites in the National Air Emissions Monitoring Study (NAEMS). Based on the results, the average NH₃ emission rate was 105.9 g d^-1 animal^-1 for beef feedlots and 125.6 g d^-1 animal^-1 for open-lot dairy barns, which were much higher than the emission factors proposed by the U.S. Environmental Protection Agency. Expressing NH₃ emissions as the NH₃-N loss as a percentage of nitrogen (N) intake can address the effect of N feed intake, can reduce uncertainties in estimation of emissions, and can be used as a key parameter in establishing emission inventories and evaluating mitigation strategies. The average NH₃-N loss as a percentage of N intake was 53.1%, 15.6%, 8.7%, and 5.1% for beef feedlots, open-lot dairy barns, free-stall dairy barns, and tie-stall dairy barns, respectively. Results showed that the measured NH₃ emission rates could be affected by measurement method. The chamber method tends to underestimate, while the N balance method tends to overestimate. Proper adjustment and validation may be needed when using the tracer ratio method in free-stall/tie-stall barns in order to avoid potential overestimation. Regression models were developed to quantify the effects of air temperature and dietary CP on emissions from various types of cattle operations. The sensitivity of NH₃ emission rate to air temperature obtained for various operations was consistent (2.33, 2.39, and 2.66 g d^-1 animal^-1 per °C, respectively, for beef feedlots, open-lot dairy barns, and free-stall/tie-stall dairy barns with natural ventilation). Higher dietary CP resulted in significantly higher NH₃ emission rates and also corresponded with higher NH₃-N loss as a percentage of N intake for beef feedlots and free-stall/tie-stall dairy barns with natural ventilation. The sensitivity of emission rates to dietary CP obtained for various types of dairy cattle operations was consistent (9.91, 12.68, and 10.40 g d^-1 animal^-1 per 1% CP, respectively, for beef feedlots, open-lot dairy barns, and free-stall/tie-stall dairy barns with natural ventilation). The average NH₃ emission rate for barns with mechanical ventilation was less than half that for barns with natural ventilation. When developing mitigating strategies, managing N intake and improving feed efficiency seem to represent the greatest opportunities." @default.
• W2751365372 created "2017-09-15" @default.
• W2751365372 date "2017-02-17" @default.
• W2751365372 modified "2023-09-25" @default.
• W2751365372 title "Variations of Ammonia Emissions from Cattle Operations: Effects of Air Temperature and Dietary Crude Protein Content" @default.
• W2751365372 doi "https://doi.org/10.13031/trans.11797" @default.
• W2751365372 hasPublicationYear "2017" @default.
• W2751365372 type Work @default.
• W2751365372 sameAs 2751365372 @default.
• W2751365372 citedByCount "2" @default.
• W2751365372 countsByYear W27513653722019 @default.
• W2751365372 countsByYear W27513653722020 @default.
• W2751365372 crossrefType "journal-article" @default.
• W2751365372 hasConcept C140793950 @default.
• W2751365372 hasConcept C178790620 @default.
• W2751365372 hasConcept C185592680 @default.
• W2751365372 hasConcept C2776382133 @default.
• W2751365372 hasConcept C2776977481 @default.
• W2751365372 hasConcept C38304854 @default.
• W2751365372 hasConcept C39432304 @default.
• W2751365372 hasConcept C537208039 @default.
• W2751365372 hasConcept C6557445 @default.
• W2751365372 hasConcept C86803240 @default.
• W2751365372 hasConceptScore W2751365372C140793950 @default.
• W2751365372 hasConceptScore W2751365372C178790620 @default.
• W2751365372 hasConceptScore W2751365372C185592680 @default.
• W2751365372 hasConceptScore W2751365372C2776382133 @default.
• W2751365372 hasConceptScore W2751365372C2776977481 @default.
• W2751365372 hasConceptScore W2751365372C38304854 @default.
• W2751365372 hasConceptScore W2751365372C39432304 @default.
• W2751365372 hasConceptScore W2751365372C537208039 @default.
• W2751365372 hasConceptScore W2751365372C6557445 @default.
• W2751365372 hasConceptScore W2751365372C86803240 @default.
• W2751365372 hasIssue "1" @default.
• W2751365372 hasLocation W27513653721 @default.
• W2751365372 hasOpenAccess W2751365372 @default.
• W2751365372 hasPrimaryLocation W27513653721 @default.
• W2751365372 hasRelatedWork W1572732358 @default.
• W2751365372 hasRelatedWork W1610999662 @default.
• W2751365372 hasRelatedWork W2028094018 @default.
• W2751365372 hasRelatedWork W2050306664 @default.
• W2751365372 hasRelatedWork W205066863 @default.
• W2751365372 hasRelatedWork W2135751938 @default.
• W2751365372 hasRelatedWork W2385886878 @default.
• W2751365372 hasRelatedWork W3010180127 @default.
• W2751365372 hasRelatedWork W4296616411 @default.
• W2751365372 hasRelatedWork W786744667 @default.
• W2751365372 hasVolume "60" @default.
• W2751365372 isParatext "false" @default.
• W2751365372 isRetracted "false" @default.
• W2751365372 magId "2751365372" @default.
• W2751365372 workType "article" @default.