| Daily, monthly, seasonal, and annual ammonia emissions from southern high plains cattle feedyards. | |
| | |
MedLine Citation:
|
PMID: 21712577 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
Ammonia emitted from beef cattle feedyards adds excess reactive N to the environment, contributes to degraded air quality as a precursor to secondary particulate matter, and represents a significant loss of N from beef cattle feedyards. We used open path laser spectroscopy and an inverse dispersion model to quantify daily, monthly, seasonal, and annual NH emissions during 2 yr from two commercial cattle feedyards in the Panhandle High Plains of Texas. Annual patterns of NH fluxes correlated with air temperature, with the greatest fluxes (>100 kg ha d) during the summer and the lowest fluxes (<15 kg ha d) during the winter. Mean monthly per capita emission rate (PCER) of NH-N at one feedyard ranged from 31 g NH-N head d (January) to 207 g NH-N head d (October), when increased dietary crude protein from wet distillers grains elevated emissions. Ammonia N emissions at the other feedyard ranged from 36 g NH-N head d (January) to 121 g NH-N head d (September). Monthly fractional NH-N loss ranged from a low of 19 to 24% to a high of 80 to 85% of fed N at the two feedyards. Seasonal PCER at the two feedyards averaged 60 to 71 g NH-N head d during winter and 103 to 158 g NH-N head d during summer. Annually, PCER was 115 and 80 g NH-N head d at the two feedyards, which represented 59 and 52% of N fed to the cattle. Detailed studies are needed to determine the effect of management and environmental variables such as diet, temperature, precipitation, and manure water content on NH emissions. |
| | |
Authors:
|
Richard W Todd; N Andy Cole; Marty B Rhoades; David B Parker; Kenneth D Casey |
Related Documents
:
|
1780007 - The correlation between serum total cholesterol and some trace elements in serum, liver... 660377 - Comparison of the effects of the growth factor produced by spirometra mansonoides and g... 17819307 - Constitution and smoking. 1534437 - Effects of dietary cholesterol on serum cholesterol: a meta-analysis and review. 7199827 - Dietary-induced severe obesity: a rat model. 9731227 - The protective effect of 17 beta-estradiol on vasomotor responses of aorta from cholest... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Journal of environmental quality Volume: 40 ISSN: 0047-2425 ISO Abbreviation: J. Environ. Qual. Publication Date: 2011 Jul-Aug |
Date Detail:
|
Created Date: 2011-06-29 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0330666 Medline TA: J Environ Qual Country: United States |
Other Details:
|
Languages: eng Pagination: 1090-5 Citation Subset: IM |
Copyright Information:
|
Copyright © by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, Inc. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: The Phosphorus Footprint of China's Food Chain: Implications for Food Security, Natural Resource Man...
Next Document: Stability of odorants from pig production in sampling bags for olfactometry.