Li, X. Z., C. G. Yan, R. J. Long, G. L. Jin, J. Shinekhuu, B. J. Ji, S. H. Choi, H. G. Lee and M. K. Song. 2009c. Conjugated linoleic acid in rumen fluid and milk fat, and methane emission of lactating goats fed a soybean oil based diet supplemented with sodium bicarbonate and monensin. Asian-Aust. J. Anim. Sci. 22:1521-1530.