ArticleJournal of comparative physiology. B, Biochemical, systemic, and environmental physiology2005
Adaptations to fasting in the American mink (Mustela vison): nitrogen metabolism.
Article in Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 31 citations in OpenAlex.
- Peculiarities of one-carbon metabolism in the strict carnivorous cat and the role in feline hepatic lipidosis.Nutrients · 2013Review
- Article
- Food deprivation in the common vole (Microtus arvalis) and the tundra vole (Microtus oeconomus).Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2008Article
- Fasting in the American marten (Martes americana): a physiological model of the adaptations of a lean-bodied animal.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2007Article
- Uniform fatty acid mobilization from anatomically distinct fat depots in the sable (Martes zibellina).Lipids · 2007Article
Corrections and comments
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Authors and funding
4 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The aim of this study was to investigate the adaptations of protein metabolism to seasonal fasting in an actively wintering boreal carnivore. Fifty farm-bred male American minks Mustela vison were divided into a fed control group and four experimental groups fasted for 2, 3, 5 or 7 days. The responses of nitrogen metabolism to wintertime food deprivation were determined by measuring the rate of weight loss, the tissue total protein concentrations and the plasma amino acid, urea, ammonia, uric acid and total protein levels. The mink has relatively poor adaptations to food deprivation, as it is not able to prolong phase II of fasting with fat as the major metabolic fuel. Instead, the species has to derive a part of its energy requirements from the breakdown of body proteins. The end product of protein catabolism--urea--accumulates in its circulation, and the mink may not be able to recycle urea-N. Although the mink can still have a high body fat percent at the end of the 7-day fast, it appears to enter phase III of fasting with stimulated proteolysis during this period.
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Registered trials
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