Abstract # 17:

Scheduled for Thursday, June 17, 2010 10:45 AM-10:55 AM: Session 5 (Medallion Ballroom B) Oral Presentation


MEAL PATTERNING AND THE DEVELOPMENT OF OBESITY IN CAPTIVE CALLITHRIX JACCHUS (COMMON MARMOSET)

C. N. Ross1,3, S. Tardif1,3 and M. Power2
1University of Texas Health Science Center, San Antonio, TX 78245, USA, 2Nutrition Laboratory, Smithsonian National Zoological Park, 3Southwest National Primate Research Center
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In order to evaluate the impact of maternal obesity on infant development marmosets at the Southwest National Primate Research Center are examined at birth, 1, 2, 3, and 6 months for weight, fat and lean mass. At three months thirteen infants were given an 8 hour lickometer trial that consists of a choice between high-fat (HF) and low-fat (LF) liquid purified diets in order to assess meal patterning and dietary choice. As the infants lick a low voltage circuit is completed generating counts on the data collection unit that can be tabulated into intermeal intervals (IMI) and meals defined by an IMI >180sec. Infant meals ranged from 15–51 meals/day, with average meal length=256 sec, average IMI=545 sec, and average licks/meal=87. Length of the first meal of the day was positively correlated with daily intake of HF diet [n=13, r=0.68, P=0.042]. Consumption of HF liquid diet was positively associated with consumption of HF solid diet [n=13, r = 0.871, P<0.001]. While non-significant, intake of liquid HF diet at three months was marginally higher for animals that were later classified as obese at 6 months of age [F(1,12)=4.052, P=0.067]. The ability to assess daily food intake and patterning gives us a unique opportunity to evaluate the development of obesity from infancy to adulthood.