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Growth of mallards fed phosphamidon for 13-day periods during three different developmental stages

Environmental Pollution (Series A)

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Abstract

Mallard ducklings (Anas platyrhynchos) were exposed to a 13-day dietary treatment of O, 0.5, or 5.0 ppm phosphamidon at one of three successive age intervals (5-17 days, 18-30 days, or 31-43 days) during a 10-week growth period. Weekly measurements of body weight, wing length, primary feather length, and bill length revealed slower development of primary feathers in those birds treated from 5 to 17 days; treatment effects on body weight and wing length from 6 to 8 weeks of age were observed among those birds treated from 18 to 30 days of age. Some differences in growth patterns among birds treated with the same phosphamidon level, but at different growth stages, were attributed to the varying size of the group with which a duckling was housed at different times in the growth process. No brain cholinesterase depression was observed in any group either 24 h after phosphamidon treatment was terminated or at 10 weeks of age.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Growth of mallards fed phosphamidon for 13-day periods during three different developmental stages
Series title:
Environmental Pollution (Series A)
Volume
25
Issue:
2
Year Published:
1981
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
139-147
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Environmental Pollution (Series A)
First page:
139
Last page:
147