Abstract:

In order to explore Tephrosia canadida DC. as a new kind of protein forage resource, sub chronic toxicity test of diet with Tephrosia canadida DC. of mice was carried out. The diets containing different proportions of Tephrosia canadida DC. powder were fed to mice，the intake condition，growth condition，organ coefficient and tissue slice were measured and analyzed. The results showed that：① In the course of the test，the mice were normal and there wete no mice dead in the control or test groups；②There was no pathological change in viscera，after mice of the test groups were killed；③Organ coefficients of mice were no significant difference (P＞0.05)between the control and test groups；④The liver and kidney tissue of mice in test group C（40%） and D（60%）changed slightly，while other viscera had no change．It indicated that Tephrosia canadida DC. could be safely used as animal forage．

Key words: Tephrosia canadida DC.; sub chronic toxicity test; intake; organ coefficient; tissue slice.