A N Hristov, E Kebreab, M Niu, J Oh, A Bannink, A R Bayat, T B Boland, A F Brito, D P Casper, L A Crompton, J Dijkstra, M Eugène, P C Garnsworthy, N Haque, A L F Hellwing, P Huhtanen, M Kreuzer, B Kuhla, P Lund, J Madsen, C Martin, P J Moate, S Muetzel, C Muñoz, N Peiren, J M Powell, C K Reynolds, A Schwarm, K J Shingfield, T M Storlien, M R Weisbjerg, D R Yáñez-Ruiz, Z Yu
Ruminant production systems are important contributors to anthropogenic methane (CH4 ) emissions, but there are large uncertainties in national and global livestock CH4 inventories. Sources of uncertainty in enteric CH4 emissions include animal inventories, feed dry matter intake (DMI), ingredient and chemical composition of the diets, and CH4 emission factors. There is also significant uncertainty associated with enteric CH4 measurements. The most widely used techniques are respiration chambers, the sulfur hexafluoride (SF6 ) tracer technique, and the automated head-chamber system (GreenFeed; C-Lock Inc...
April 18, 2018: Journal of Dairy Science