Use of Wood-Based Materials in Beef Bedded Manure Packs: 1. Effect on Ammonia, Total Reduced Sulfide, and Greenhouse Gas Concentrations
- Mindy J. Spiehs *a,
- Tami M. Brown-Brandla,
- David B. Parkerb,
- Daniel N. Millerc,
- Jeffrey P. Jaderborgd,
- Alfredo DiCostanzod,
- Elaine D. Berrya and
- James E. Wellsa
- a USDA–ARS, Meat Animal Research Center, Spur 18D, Clay Center, NE 68933
b Palo Duro Research Facility, WTAMU Box 60938, West Texas A&M Univ., Canyon, TX 79016
c USDA–ARS, Agroecosystems Management Research Unit, 118 Keim Hall, UNL- East Campus, Lincoln, NE 68583
d Dep. of Animal Science, Univ. of Minnesota, 1364 Eckles Avenue, St. Paul, MN 55108
The objectives of this study were to determine the effect of using corn stover or three different wood-based bedding materials (kiln-dried pine wood chips, dry cedar chips, or green cedar chips) on airborne concentrations of NH3, total reduced sulfides (TRS), CO2, CH4, and N2O above lab-scaled bedded manure packs. Four bedded packs of each bedding material were maintained for two 42-d periods. Airborne NH3, TRS, CO2, CH4, and N2O were measured weekly. Bedded packs containing dry or green cedar had lower concentrations of NH3 (350.8 and 357.3 mg m−3, respectively; P < 0.05) than bedded packs containing pine chips or corn stover (466.0 and 516.7 mg m−3, respectively). Airborne CO2 was also lower from bedded packs containing dry and green cedar (1343.7 and 1232.3 mg m−3, respectively; P < 0.001) compared with bedded packs containing pine chips or corn stover (2000.2 and 1659.8 mg m−3, respectively). Air samples from bedded packs containing green cedar chips had a higher (P < 0.01) concentration of CH4 than bedded packs containing dry cedar chips, corn stover, or pine chips at Day 35 and 42. Initially, TRS concentration was similar among all bedding materials; at 28 to 42 d, TRS was higher (P < 0.001) from bedded packs containing the cedar products. Airborne N2O was similar (P = 0.51) for all bedding materials. Pine chips and cedar products can be adequate substitutes for corn stover in deep-bedded barns, but cedar bedding may need to be removed more frequently.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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