Methane

Effects of different dietary acidifier sources of calcium and phosphorus on ammonia, methane and odorant emission from growing-finishing pigs

van Kempen, A. T. G., H. H. Stein, W. J. Powers, P. R. Ferket, and I. B. Kim. 2004. Effects of different dietary acidifier sources of calcium and phosphorus on ammonia, methane and odorant emission from growing-finishing pigs. Asian-Austr. J. Anim. Sci. 17:1131-1138. Link to full text (.pdf)