Environmental enrichment may reduce stereotypies in fur-farmed mink. North American mink standards require manipulable enrichment objects within cages. However, mink can rapidly destroy objects inhibiting continuous enrichment presence, which may have negative welfare impacts.
View Article and Find Full Text PDFBiomonitoring data have consistently demonstrated that fish, wildlife, and humans are exposed to multiple per- and polyfluoroalkyl substances (PFAS) in drinking water and foods. Despite ubiquitous exposure to mixtures of PFAS, there is a lack of in vivo PFAS mixture research that addresses whether these chemicals act in a cumulative, dose-additive (DA) manner or whether they behave independently. For this reason, there is a critical need for mixtures studies designed to evaluate the cumulative toxicity and potential chemical interactions to support the assessment of human and ecological risks and also to define appropriate regulatory actions.
View Article and Find Full Text PDFJ Toxicol Environ Health B Crit Rev
November 2021
Effects of perfluorooctane sulfonate (PFOS) and a legacy aqueous film-forming foam (AFFF) containing 91% PFOS (AFFF PFOS) on reproduction, chick survivability, and growth of Japanese quail (Coturnix japonica) were determined. Day-old Japanese quail were administered PFOS or AFFF PFOS at 6 dietary concentrations ranging from 0 to 21 mg kg feed for a total of 20 wk. At the age of 4 wk, 16 male/female pairs per treatment were assigned to cages, and egg laying was induced by the age of 10 wk.
View Article and Find Full Text PDFAs part of an effort to develop avian ecotoxicity information for poly- and perfluoroalkyl substances (PFAS) including perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) associated with aqueous film-forming foam (AFFF) used by the Department of Defense, the subacute toxicity of PFOS, PFOA, PFOS + PFOA, 3M AFFF, and Ansul AFFF to Japanese quail (Coturnix japonica) chicks was determined. Ten-day-old Japanese quail were administered treated feed for 5 d and then fed untreated feed for 18 d. Analyzed concentrations of PFOS, PFOA, and PFOS + PFOA ranged from 62 to 1955, 162 to 1208, and 43 + 45 to 296 + 292 mg kg feed .
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