Made available in DSpace on 2022-04-28T19:49:36Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01; Background: Although the etiology of hepatogenous photosensitization has not yet been fully elucidated, it is known that hepatotoxic substances (saponins) present in grasses of the genus Brachiaria spp. are responsible for intoxication of ruminants and horses, causing great economic losses in the whole ...