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Effects of chronic intake of starch-, glucose- and fructose-containing diets on eating behaviour in adult minipigs

By Melissa Ochoa, Charles-Henri Malbert, Jean-Paul Lallès, Eric Bobillier, David Val-Laillet

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Abstract

Introduction The aim of this study was to assess whether chronic intake of isocaloric high-fat diets differing partly in the source of carbohydrates (starch, glucose or fructose) and fed at the same level of intake impacts eating behaviour in the adult Yucatan minipig. Methods Adult minipigs were offered for 8 weeks either of three high-fat diets in which 20% of dry matter weight (36.3% of metabolizable energy) was provided as pure maize starch (SD), glucose (GD) or fructose (FD) (n=5 per diet). Three eating behaviour tests, including a three-feed choice test, an eating microstructure test and operant conditioning with progressive ratio test were performed before and after dietary treatment in order to evaluate the impact of these carbohydrates on feed preferences and animal's motivation. Results After 8-week treatment, all groups had similar increases in body weight (from 36.2±1.2 to 57.5±0.1kg, P

Publication Title Applied Animal Behaviour Science
Volume 157
Pages 61-71
ISBN/ISSN 0168-1591
DOI 10.1016/j.applanim.2014.05.010
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Tags
  1. Eating habits
  2. fructose
  3. Glucose
  4. palatability
  5. rewards