Influence of diet and management practices on environmental footprint

Tuesday, July 22, 2014: 2:00 PM-3:30 PM
2102B (Kansas City Convention Center)
Moderator:
Scott Radcliffe
2:00 PM
547
Effect of breed type and pasture type on methane emissions from weaned lambs offered fresh grasses
Mariecia D Fraser, Aberystwyth University; Hannah R Fleming, Aberystwyth University; Vince J Theobald, Aberystwyth University; Jon M Moorby, Aberystwyth University
2:15 PM
548
Effects of dietary nitrate supplementation on enteric methane and nitrous oxide emissions from beef cattle
Clayton J. Neumeier, University of California, Davis; Qian Wang, University of California, Davis; Alejandro R. Castillo, University of California Cooperative Extension; Yongjing Zhao, University of California, Davis; Yuee Pan, University of California, Davis; Frank M. Mitloehner, University of California, Davis
2:30 PM
549
Comparison of active flux and passive concentration measurements of methane emissions from cattle
Pekka Huhtanen, Swedish University of Agricultural Sciences (SLU); Edward H Cabezas Garcia, Swedish University of Agricultural Sciences; Scott R Zimmerman, C-Lock Inc; Patrick R Zimmerman, C-Lock Inc
2:45 PM
550
Methane emission intensities by Holstein and Holstein x Jersey crossbreed lactating cows in two Brazilian grazing systems
Alexandre Berndt, EMBRAPA; Amanda Prudencio Lemes, EMBRAPA; Laura Alexandra Romero, EMBRAPA; Teresa Cristina Alves, EMBRAPA; Alexandre M Pedroso, EMBRAPA; Andre de Faria Pedroso, EMBRAPA; Patricia Perondi Anchao Oliveira, EMBRAPA
3:00 PM
551
Comparison Between the Sulfur Hexafluoride Tracer Technique and the Portable Automated Head Chamber System for Measurements of Enteric Methane Fluxes in Mid-Lactation Holstein Cows
Andre B. D. Pereira, University of New Hampshire; Christopher D Dorich, University of New Hampshire; Andre F Brito, University of New Hampshire; Ruth K Varner, University of New Hampshire; Roger Martineau, Agriculture and Agri-Food Canada, Dairy and Swine Research and Development Centre
3:15 PM
552
Nitrogen use efficiency and carbon footprint by beef cattle limit-fed co-product feedstuffs
W. B. Smith, Department of Animal Science, University of Arkansas Division of Agriculture; K. P. Coffey, University of Arkansas; R. T. Rhein, Department of Animal Science, University of Arkansas Division of Agriculture; E. B. Kegley, Department of Animal Science, University of Arkansas Division of Agriculture; D. Philipp, Department of Animal Science, University of Arkansas Division of Agriculture; J. D. Caldwell, Department of Agriculture and Environmental Sciences, Lincoln University; A. N. Young, Department of Animal Science, University of Arkansas Division of Agriculture