A Study of Absorption and Retention of Lead in Wild Waterfowl in Relation to Clinical Evidence of Lead Poisoning

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Abstract
The critical daily dosage level was found to be between 6 and 8 mg./kg. The avg. survival time for birds dosed at a level of 12 mg./kg. was 3.5 days less than for birds receiving lead at the 8 mg./kg. level, but there was no significant difference in the deposition of lead in the tissues of the 2 groups. Lead metabolism studies for 3 consecutive periods showed comparable rates of retention for the 2 dosage levels, with no significant difference in lead retention. The rate of deposition of lead in the tissues, as indicated by metabolism tests, was found to be such that related clinical symptoms could be predicted. Any one of 3 units, skeleton, liver, or soft tissues might be satisfactory as field samples for the detn. of lead poisoning by chemical analysis.

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