Effects of feeding and short-term fasting on water and electrolyte turnover in female mink (Mustela vison)

The British Journal of Nutrition
S WambergJ Elnif

Abstract

Daily (24 h) rates of water and electrolyte turnover were measured in a conventional balance study in ten adult female pastel mink (Mustela vison) given free access to a standard mink feed for a 1-week conditioning period, followed by a 4 d experimental period and a 2 d fasting period. Drinking water was available throughout. In addition, the completeness of urine collection and the fraction of urine collected with the faeces were determined using a new experimental technique based on 24 h recoveries of specific urinary markers such as tritiated p-aminohippuric acid ([3H]PAH) or 14C-labelled inulin ([14C]IN) continuously delivered by small Alzet osmotic pumps implanted intraperitoneally. During feeding the mean individual percentage recovery in urine of [3H]PAH released from the osmotic pumps ranged from 68 to 88% (median 78%). The mean percentage of urinary [3H]PAH recovered from faecal collections was 6% (range 3-12%). In response to fasting the mean individual percentage recovery of [3H]PAH in urine ranged from 62 to 78% (median 68%). For urinary [14C]IN the mean percentage recoveries in fed and fasted animals were 79 and 63% respectively. Furthermore, during fasting, withdrawal of the supplies of dietary water caused a slig...Continue Reading

References

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Citations

Oct 17, 1998·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·S Wamberg, A H Tauson
Nov 10, 2001·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·K RussellE J Harper
Jul 9, 2002·Archiv für Tierernährung·R FinkN B Kristensen
Mar 8, 2005·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Anne-Mari MustonenPetteri Nieminen
Dec 30, 1998·The Journal of Nutrition·S Wamberg, A H Tauson
Dec 30, 1998·The Journal of Nutrition·S Wamberg, A H Tauson

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