HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Google Scholar Articles by McLaughlin, M. R. Articles by Adeli, A. PubMed PubMed Citation Articles by McLaughlin, M. R. Articles by Adeli, A. Agricola Articles by McLaughlin, M. R. Articles by Adeli, A. Related Collections Water Quality Nitrogen Phosphorus Nutrient Management Animal Waste

TECHNICAL REPORTS

Waste Management

Characterization of Selected Nutrients and Bacteria from Anaerobic Swine Manure Lagoons on Sow, Nursery, and Finisher Farms in the Mid-South USA

USDA-ARS, Genetics and Precision Agriculture Research Unit, P.O. Box 5367, Mississippi State, MS 39762. Journal article number J–11465 of the Mississippi Agricultural and Forestry Experiment Station. Mention of a trade name, proprietary product, or specific equipment does not constitute a guarantee or warranty by the USDA and does not imply its approval to the exclusion of other products that may be suitable. This work was prepared by employees of the U.S. Government as part of their official duties and is in the public domain and may be used without further permission

^* Corresponding author (mike.mclaughlin{at}ars.usda.gov).

Received for publication October 31, 2008. Swine (Sus scrofa domestica) production in the Mid-South USA comprises sow, nursery, and finisher farms. A 2007 packing plant closure started a regional shift from finisher to sow and nursery farms. Changes in manure stored in lagoons and land-applied as fertilizer were expected but were unknown because nutrient and bacterial levels had not been characterized by farm type. The objectives of this study were to quantify selected nutrients and bacteria, compare levels by farm types, and project impacts of production shifts. Nutrients and bacteria were characterized in 17 sow, 10 nursery, and 10 finisher farm lagoons. Total and thermotolerant coliforms, Escherichia coli (Migula) Castellani and Chalmers, Enterococcus spp., Clostridium perfringens (Veillon and Zuber) Hauduroy et al., Campylobacter spp., Listeria spp., and Salmonella spp. were evaluated. Highest levels were from total coliforms (1.4– 5.7 x 10⁵ cfu 100 mL^–1), which occurred with E. coli, Campylobacter spp., C. perfringens, and Enterococcus spp., in every lagoon and virtually every sample. Lowest levels were from Listeria spp. and Salmonella spp. (1.3 x 10² most probable number [MPN] 100 mL^–1), detected in 81 and 89% of lagoons and 68 and 64% of samples, respectively. Sow farm levels were higher for all except Listeria spp. and Salmonella spp., which were lower (1.4 x 10¹ and 2.8 x 10¹ MPN 100 mL^–1, respectively) and only slightly below their respective levels from nursery farms (1.1 x 10² and 3.4 x 10¹ MPN 100 mL^–1). Shifting from finisher to nursery farm would not affect bacterial levels, but shifting to sows would. Either shift would reduce NPK and N:P and suggest modification of nutrient management plans.

Abbreviations: cfu, colony forming unit • MPN, most probable number • PCR, polymerase chain reaction • RTiPCR, real-time polymerase chain reaction • (USEPA, United States Environmental Protection Agency

This article has been cited by other articles:

				J. P. Brooks and M. R. McLaughlin Antibiotic Resistant Bacterial Profiles of Anaerobic Swine Lagoon Effluent J. Environ. Qual., October 29, 2009; 38(6): 2431 - 2437. [Abstract] [Full Text] [PDF]