Mantysaari et al., 1989. J. Dairy Sci., 72: 2107-2114 Document reference Mantysaari, P. E. ; Sniffen, C. J. ; Muscato, T. V. ; Thonney, M. L., 1989. Performance of growing dairy heifers fed diets containing soybean meal and animal by-product meals. J. Dairy Sci., 72: 2107-2114Web http://dx.doi.org/10.3168/jds.S0022-0302(89)79335-8Citation key Mantysaari et al., 1989