Pfister J, Stegelmeier B, Cheney C, Ralphs M, Gardner D. Conditioning taste aversions to locoweed (Oxytropis sericea) in horses. J Anim Sci. 2002;80:79-83 pubmed
Pfister J, Stegelmeier B, Gardner D, James L. Grazing of spotted locoweed (Astragalus lentiginosus) by cattle and horses in Arizona. J Anim Sci. 2003;81:2285-93 pubmed
..Although limited in scope, this study indicates that horses should not be exposed to spotted locoweed...
Pfister J, Stegelmeier B, Cheney C, Gardner D. Effect of previous locoweed (Astragalus and Oxytropis species) intoxication on conditioned taste aversions in horses and sheep. J Anim Sci. 2007;85:1836-41 pubmed