Bottle-choice tests in Sprague-Dawley rats using liquid diets that differ in oil and sucrose contents.
Bottle choice tests using liquid diets were done with Sprague-Dawley (SD) rats. SD rats ingested more oil-and-sucrose-enriched milk (hi-fat) and less oil-enriched milk (hi-fat-no-carb) than sucrose-enriched (hi-carb) milk by two-bottle choice tests after they were habituated to liquid diets for 4 days. Chronic food restriction didn't increase hi-fat ingestion but hi-fat-no-carb. Rats ingested less without habituation, and overnight food deprivation increased intake. This increment was maintained after rats were free-fed. The difference in fat content of the maintenance diet had little effect on fat preference. These results showed SD rats prefer a sweet and fatty liquid diet than a sweet and lean liquid diet. Habituation and food restriction were more important than the composition of the maintenance diet to demonstrate a clear preference for the fatty liquid diet.
Kimura
Fumiko
F
Laboratory of Food and Biomolecular Science, Graduate School of Agricultural Science, Tohoku University, 1-1 Tsutsumidori-Amamiyamachi, Aoba-ku, Sendai 981-8555, Japan. f_kimura@biochem.tohoku.ac.jp
Okada
Risa
R
Endo
Yasushi
Y
Fujimoto
Kenshiro
K
D000821:Animal Feed; D000818:Animals; D004040:Dietary Carbohydrates / Q000008:administration & dosage*; D004041:Dietary Fats / Q000008:administration & dosage*; D004435:Eating / Q000502:physiology; D005508:Food Deprivation / Q000502:physiology; D005518:Food Preferences / Q000502:physiology*; D005526:Food, Formulated; D006185:Habituation, Psychophysiologic / Q000502:physiology; D008892:Milk; D051381:Rats; D017207:Rats, Sprague-Dawley; D013024:Soybean Oil / Q000008:administration & dosage*; D013395:Sucrose / Q000008:administration & dosage*
D004040:Dietary Carbohydrates; D004041:Dietary Fats; D013395:Sucrose; D013024:Soybean Oil