PMID- 9435645 OWN - NLM STAT- MEDLINE DCOM- 19980209 LR - 20190510 IS - 0002-9513 (Print) IS - 0002-9513 (Linking) VI - 273 IP - 6 DP - 1997 Dec TI - Meal pattern analysis to investigate the satiating potential of fat, carbohydrate, and protein in rats. PG - R1916-22 LID - 10.1152/ajpregu.1997.273.6.R1916 [doi] AB - We examined meal patterns after isocaloric duodenal infusions of fat, carbohydrate (CHO), and protein by measuring meal size, intermeal interval (IMI) and total food intake (TFI). Wistar rats were adapted to normal feeding 6 h/day, with continuous computer monitoring of feeding patterns. One of five solutions (10 ml of 1 kcal/ml at 0.45 ml/min; 0, 20, 50, 80, or 100% of energy from fat) or saline (control) was infused 10 min after initiation of eating. Separate rats received casein or casein hydrolysate at 18.5 or 37% energy. Equivalent energy loads varying in fat, CHO, and protein content compared with saline resulted in similar reductions in first meal intakes. The second meal did not differ among fat and CHO treatments including saline; however, infusion with a protein-containing solution increased the size of meal 2. The IMI was doubled by protein infusion independently of dose or source but extended dose dependently by fat. TFI was lower after high fat and higher after protein than after saline infusion. The results indicate that the concentrations of fat, CHO, and protein differentially affect the qualitative and quantitative aspects of feeding in rats. FAU - Burton-Freeman, B AU - Burton-Freeman B AD - Department of Nutrition, School of Veterinary Medicine, University of California, Davis 95616, USA. FAU - Gietzen, D W AU - Gietzen DW FAU - Schneeman, B O AU - Schneeman BO LA - eng GR - DK-35747/DK/NIDDK NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Am J Physiol JT - The American journal of physiology JID - 0370511 RN - 0 (Dietary Carbohydrates) RN - 0 (Dietary Fats) RN - 0 (Dietary Proteins) SB - IM MH - Animals MH - *Dietary Carbohydrates MH - *Dietary Fats MH - *Dietary Proteins MH - Duodenum/*physiology MH - Energy Intake MH - Energy Metabolism MH - Enteral Nutrition MH - *Feeding Behavior MH - Male MH - Rats MH - Rats, Wistar MH - Satiety Response/*physiology MH - Time Factors EDAT- 1998/01/22 00:00 MHDA- 1998/01/22 00:01 CRDT- 1998/01/22 00:00 PHST- 1998/01/22 00:00 [pubmed] PHST- 1998/01/22 00:01 [medline] PHST- 1998/01/22 00:00 [entrez] AID - 10.1152/ajpregu.1997.273.6.R1916 [doi] PST - ppublish SO - Am J Physiol. 1997 Dec;273(6):R1916-22. doi: 10.1152/ajpregu.1997.273.6.R1916.