by Trupa, A, Latvietis, J, Ruvalds, I, Strikauska, S. (Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Agriculture. Dept. of Animal Nutrition)
Published in Proceedings of the Latvia University of Agriculture (Latvia) (1999)

by Gaile, Z, Ruvalds, I. (Latvia)
Published in Agro Tops (Latvia) (01.10.2002)

by Latvietis, J, Ruvalds, I
Published in Archiv für Tierernährung (1980)

by Gaile, Z., Latvia Univ. of Agriculture, Auce, Dobele reg. (Latvia). Training and Research Farm Vecauce, Aizsilnieks, A., Latvia Univ. of Agriculture, Auce, Dobele reg. (Latvia). Training and Research Farm Vecauce, Ruvalds, I., Latvia Univ. of Agriculture, Auce, Dobele reg. (Latvia). Training and Research Farm Vecauce
Year of Publication 2006

by Latvietis, J, Ruvalds, I, Daksa, G. (Latvian Univ. of Agriculture, Jelgava (Latvia). Faculty of Agriculture. Inst. of Animal Sciences. Dept. of Animal Nutrition)
Year of Publication 1998