Document Detail

Greenhouse gas emissions during co-composting of calf mortalities with manure.
MedLine Citation:
PMID:  17965394     Owner:  NLM     Status:  MEDLINE    
Composting may be a viable on-farm option for disposal of cattle carcasses. This study investigated greenhouse gas emissions during co-composting of calf mortalities with manure. Windrows were constructed that contained manure + straw (control compost [CK]) or manure + straw + calf mortalities (CM) using two technologies: a tractor-mounted front-end loader or a shredder bucket. Composting lasted 289 d. The windrows were turned twice (on Days 72 and 190), using the same technology used in their creation. Turning technology had no effect on greenhouse gas emissions or the properties of the final compost. The CO2 (75.2 g d(-1) m(-2)), CH4 (2.503 g d(-1) m(-2)), and N2O (0.370 g d(-1) m(-2)) emissions were higher (p < 0.05) in CM than in CK (25.7, 0.094, and 0.076 g d(-1) m(-2) for CO2, CH4, and N2O, respectively), which reflected differences in materials used to construct the compost windrows and therefore their total C and total N contents. The final CM compost had higher (p < 0.05) total N, total C, and mineral N content (NO3*+ NO2* + NH4+) than did CK compost and therefore has greater agronomic value as a fertilizer.
Shanwei Xu; Xiying Hao; Kim Stanford; Tim A McAllister; Francis J Larney; Jingguo Wang
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-10-24
Journal Detail:
Title:  Journal of environmental quality     Volume:  36     ISSN:  0047-2425     ISO Abbreviation:  J. Environ. Qual.     Publication Date:    2007 Nov-Dec
Date Detail:
Created Date:  2007-10-29     Completed Date:  2008-01-18     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0330666     Medline TA:  J Environ Qual     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1914-9     Citation Subset:  IM    
Agriculture and Agri-Food Canada Lethbridge Research Centre, 5403 1st Ave S., Lethbridge, AB, T1J 4B1 Canada.
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MeSH Terms
Agriculture / methods*
Carbon Dioxide / metabolism
Fertilizers / analysis
Gases / analysis*,  chemistry
Manure* / microbiology
Methane / metabolism
Nitrous Oxide / metabolism
Time Factors
Reg. No./Substance:
0/Fertilizers; 0/Gases; 0/Manure; 0/Soil; 10024-97-2/Nitrous Oxide; 124-38-9/Carbon Dioxide; 74-82-8/Methane

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