Phanthavong V, Preston T R and Leng R A 2017: Glycerol supplementation increased growth rates, decreased the acetate: propionate ratio in rumen VFA, and reduced enteric methane emissions, in cattle fattened on cassava pulp-urea, brewers’ grains and rice straw. Livestock Research for Rural Development. Volume 29, Article #36. Retrieved , from http://www.lrrd.org/lrrd29/2/phan29036.html