Teratologic evaluation of 3,6-dichloropicolinic acid in rats and rabbits
1984
Abstract 3,6-Dichloropicolinic acid (clopyralid), a new herbicide, was evaluated for teratogenic potential in Fischer 344 rats and New Zealand White rabbits. Rats were given 0, 15, 75, or 250 mg clopyralid/kg/day by gavage on Days 6–15 of gestation while rabbits were given 0, 110, or 250 mg clopyralid/kg/day on Days 6–18 of gestation. Maternal toxicity, as evidenced by decreased body weight gain, was observed among pregnant rats in the 250-mg/kg/day group. No evidence of maternal toxicity was observed among treated rabbits. A teratogenic effect was not detected in either species.
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