Ammoniation of straw by urea: influence of addition of soybeans and/or molasses on characteristics of treatment JM Besle, P. Zwaenepoel, M. Chenost, G. Beaulieu, JL Tisserand, F. Faurie and N. Grenet Reprod. Nutr. Dev., 30 Suppl. 2 (1990) 175s DOI: 10.1051/rnd:19900816