A very high 70%-protein diet does not induce conditioned taste aversion in rats.
This study was designed to assess the effects of transition and adaptation to a very high protein diet on behavioral food responses, energy intake, body weight gain, and body composition in rats. For this purpose, adult male Wistar rats were fed either a diet with 70% of energy as protein (P70 group) or a diet with 14% of energy as protein (P14 group) for 16 d. These two groups were compared with a P14 pair-fed (P14-pf) group. A behavioral satiety sequence was also examined. The P70 group ate 21% less than the P14 rats (P < 0.001) and gained less body weight (P < 0.01). The P70 group gained more carcass weight than either P14 or P14-pf rats (P < 0.05). Behavior and food intake data were affected in P70 rats on d 1 of eating the very high protein diet and then returned to baseline values as early as d 2 of consuming the P70 diet. Rats that adapted to the very high protein diet did not acquire a conditioned taste aversion but rather exhibited satiety and a normal behavioral satiety sequence.
L'Heureux-Bouron
Diane
D
Unité INRA 914 de Physiologie de la Nutrition et du Comportement Alimentaire, Institut National Agronomique Paris-Grignon, F75231 Paris Cedex 05, France.
Tomé
Daniel
D
Bensaid
Ahmed
A
Morens
Céline
C
Gaudichon
Claire
C
Fromentin
Gilles
G
D000273:Adipose Tissue / Q000033:anatomy & histology; D000818:Animals; D001362:Avoidance Learning; D001522:Behavior, Animal; D001835:Body Weight / Q000187:drug effects; D003213:Conditioning, Psychological; D004044:Dietary Proteins / Q000008:administration & dosage*; D004305:Dose-Response Relationship, Drug; D002149:Energy Intake; D007422:Intestines / Q000033:anatomy & histology; D007668:Kidney / Q000033:anatomy & histology; D008297:Male; D009929:Organ Size / Q000187:drug effects; D051381:Rats; D017208:Rats, Wistar; D012528:Satiety Response; D013649:Taste
D004044:Dietary Proteins