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Changes in digestive enzyme activity, intestine morphology, mucin characteristics and tocopherol status in mink kits (Mustela neovision) during the weaning period

Published online by Cambridge University Press:  08 October 2010

M. S. Hedemann ,
T. N. Clausen  and
S. K. Jensen
M. S. Hedemann*
Affiliation:
Faculty of Agricultural Sciences, Department of Animal Health and Bioscience, Aarhus University, PO Box 50, 8830 Tjele, Denmark
T. N. Clausen
Affiliation:
Danish Fur Breeders Research Center, Herningvej 112C, 7500 Holstebro, Denmark
S. K. Jensen
Affiliation:
Faculty of Agricultural Sciences, Department of Animal Health and Bioscience, Aarhus University, PO Box 50, 8830 Tjele, Denmark
*
†E-mail: Mette.Hedemann@agrsci.dk
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Abstract

Weaning of livestock mammals is often associated with digestive problems related to profound changes in the physiology of the gastrointestinal tract. This study was undertaken to study the developmental changes in the gastrointestinal tract of mink kits during the period of 34 to 59 days of age. Twenty-four mink kits from eight litters were included in the experiment. The dams and their litters were kept under standard farm conditions. The dams and the kits were fed a diet consisting of 48.1% protein, 40.7% fat and 11.1% carbohydrate of metabolizable energy. The mink kits were weaned at 42 days of age. At 34, 47 and 59 days of age, one male mink kit from each litter was euthanized. The activity of amylase, trypsin, chymotrypsin and lipase in the pancreatic tissue increased during the experimental period, whereas the activity of carboxyl ester hydrolase remained constant. The vitamin E concentration in plasma was stable from 34 to 59 days of age, whereas the concentration decreased in the liver. The stereochemical composition of α-tocopherol showed a steep decrease in the concentration of the biologically most active natural isomer in both plasma and liver through the whole weaning period, whereas the biologically less active 2S isomers showed a clear increase. The concentration of bile salts did not change during the experimental period. The villous height increased in the proximal part of the small intestine and decreased in the distal part, whereas the crypt depth was doubled in both the proximal and distal part of the small intestine. The mucin-staining area on the villi was markedly reduced during the experimental period but no change in the mucin-staining area in the crypts was observed.

Keywords

minkdigestive enzymeintestinal morphologymucintocopherol
Type
Full Paper
Information
animal , Volume 5 , Issue 3 , March 2011 , pp. 394 - 402
Copyright
Copyright © The Animal Consortium 2011

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