| Title: | "Using electromagnetic induction technology to predict volatile fatty acid, source area differences" |
| Author(s): | Woodbury BL; Eigenberg RA; Varel V; Lesch S; Spiehs MJ; |
| Address: | "USDA-ARS, U.S. Meat Animal Research Center, Clay Center, NE 68933, USA. bryan.woodbury@ars.usda.gov" |
| ISSN/ISBN: | 0047-2425 (Print) 0047-2425 (Linking) |
| Abstract: | "Subsurface measures have been adapted to identify manure accumulation on feedlot surfaces. Understanding where manure accumulates can be useful to develop management practices that mitigate air emissions from manure, such as odor or greenhouse gases. Objectives were to determine if electromagnetic induction could be used to predict differences in volatile fatty acids (VFA) and other volatiles produced in vitro from feedlot surface material following a simulated rain event. Twenty soil samples per pen were collected from eight pens with cattle fed two different diets using a predictive sampling approach. These samples were incubated at room temperature for 3 d to determine fermentation products formed. Fermentation products were categorized into acetate, straight-, branched-chained, and total VFAs. These data were used to develop calibration prediction models on the basis of properties measured by electromagnetic induction (EMI). Diet had no significant effect on mean volatile solids (VS) concentration of accumulated manure. However, manure from cattle fed a corn (Zea mays L.)-based diet had significantly ( P |
| Keywords: | *Electromagnetic Fields Fatty Acids/*analysis Volatile Organic Compounds/*analysis; |
| Notes: | "MedlineWoodbury, Bryan L Eigenberg, Roger A Varel, Vince Lesch, Scott Spiehs, Mindy J eng 2011/08/27 J Environ Qual. 2011 Sep-Oct; 40(5):1416-22. doi: 10.2134/jeq2009.0438" |
