PCB intake and the growth of waterfowl: multivariate analyses based on a reparameterized Richards sigmoid model. [Anas platyrhynchos; Aix sponsa]

Journal Article · · Growth; (United States)

OSTI ID:6754511

Brisbin, Jr, I L; White, G C; Bush, P B

Multivariate analyses of the parameters of a modified Richards growth model were used to determine the effects of sex and varying levels of dietary intake of PCB's (0-50 ppm), on the asymptotic size (W/sub infinity/), total growing time (T) and shape (m) of the growth curves of game farm mallards (Anas platyrhynchos) and wild wood ducks (Aix sponsa) raised under laboratory conditions. Level of PCB intake did not affect any of the growth parameters of the wood ducks, while sex affected both m and W/sub infinity/, with males of this species growing to greater body weights and showing slightly lower shape parameters than females. Growth characteristics of the mallards on the other hand, did not differ between the sexes. PCB intake however, had a significant effect on the shape of the mallard growth curve, but did not affect either W/sub infinity/ or T. All interactions between sex and PCB treatment level were non-significant in both species. The growth responses of game-farm mallards to PCB intake cannot be assumed to typify that of other wild waterfowl species without additional evidence from comparative studies.

• Research Organization: Savannah River Lab., Aiken, SC
• DOE Contract Number: W-7405-ENG-36; AC09-76SR00819
• OSTI ID: 6754511
• Journal Information: Growth; (United States), Journal Name: Growth; (United States) Vol. 50:1; ISSN GROWA
• Country of Publication: United States
• Language: English

Related Subjects

560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMAL GROWTH
ANIMALS
AROMATICS
BIRDS
CHLORINATED AROMATIC HYDROCARBONS
DIET
DUCKS
FOWL
GROWTH
HALOGENATED AROMATIC HYDROCARBONS
INTAKE
MATHEMATICAL MODELS
MATHEMATICS
MULTIVARIATE ANALYSIS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
SEX DEPENDENCE
STATISTICS
TOXICITY
VERTEBRATES