Toxicity of seleno-L-methionine, seleno-DL-methionine, high selenium wheat, and selenized yeast to mallard ducklings

• Published in: Archives of environmental contamination and toxicology Vol. 30; no. 1; pp. 93 - 99
• Main Authors: Heinz, G.H. (U.S. National Biological Service, Laurel, MD.), Hoffman, D.J, Lecaptain, L.J
• Format: Journal Article
• Language: English
• Published: Heidelberg Springer-Verlag 01.01.1996; Berlin; New York, NY
• Subjects: ADVERSE EFFECTS; ANAS PLATYRHYNCHOS; ANIMAL SALVAJE; ANIMAL SAUVAGE; Animal, plant and microbial ecology; Animals; Applied ecology; Aves; BIOAVAILABILITY; BIODISPONIBILIDAD; BIODISPONIBILITE; Biological and medical sciences; BIRDS; BLE; Body Weight - drug effects; CANARD; CONCENTRATION; CONSOMMATION; CONSUMO; CONSUMPTION; CONTAMINANTES; CONTAMINANTS; DIET; DIETA; DUCKS; Eating - drug effects; Ecotoxicology, biological effects of pollution; EFECTOS SECUNDARIOS; Effects of pollution and side effects of pesticides on vertebrates; EFFET SECONDAIRE; FOIE; Fundamental and applied biological sciences. Psychology; HIGADO; ISOMERS; LEVADURA; LEVURE; LIVER; Liver - drug effects; Liver - metabolism; METHIONINE; METIONINA; OISEAU; PAJAROS; PATO; PESO; POIDS; POLLUANT; POLLUTANTS; POLLUTION; POLUCION; REGIME ALIMENTAIRE; SELENIO; SELENIUM; Selenium - metabolism; Selenium - toxicity; Selenomethionine - metabolism; Selenomethionine - toxicity; SIDE EFFECTS; Stereoisomerism; SUPERVIVENCIA; SURVIE; SURVIVAL; TERRE HUMIDE; TIERRAS HUMEDAS; Tissue Distribution; TOXICIDAD; TOXICITE; TOXICITY; TRIGO; Triticum - metabolism; WEIGHT; WETLANDS; WHEATS; WILD ANIMALS; YEASTS; Yeasts - metabolism; Vertebrata; Yeast; Toxicity; Body weight; Methionine; Selenium compound; Anas platyrhynchos; Aves; Wheat; Survival; Feeding; Chemical contamination
• ISSN: 0090-4341; 1432-0703
• DOI: 10.1007/BF00211333

The toxicity of four chemical forms of selenium (seleno-L-methionine, seleno-DL-methionine, selenized yeast, and high selenium wheat) was compared in day-old mallard ducklings (Anas platyrhynchos). In the first experiment, in which the basal diet was 75% wheat, survival after 2 weeks was lower for ducklings fed 30 micrograms/g selenium as seleno-L-methionine (36%) than for ducklings fed 30 micrograms/g selenium as seleno-DL-methionine (100%) or 30 micrograms/g selenium from high selenium yeast (88%). The concentration of selenium at 2 weeks in the livers of survivors was similar for ducklings fed 15 micrograms/g selenium as seleno-DL-methionine (12 micrograms/g, wet weight), seleno-L-methionine (11 micrograms/g), and high selenium wheat (11 micrograms/g), but was lower when the selenium came from selenized yeast (6.2 micrograms/g). When fed 30 micrograms/g selenium from the various sources, the selenium concentrations in liver were 20 micrograms/g for seleno-DL-methionine, 19 micrograms/g for seleno-L-methionine, and 9.9 micrograms/g for selenized yeast. In a second experiment, in which the basal diet was a commercial duck feed, survival after 2 weeks was 100% in ducklings fed 30 micrograms/g selenium as seleno-DL-methionine, seleno-L-methionine, or selenized yeast. Selenium concentrations in liver were similar for ducklings fed the 30-micrograms/g selenium diets as the DL or L forms of selenomethionine (27 and 25 micrograms/g), but lower for ducklings fed selenized yeast (13 micrograms/g).