Abstract # 174:

Scheduled for Friday, June 21, 2013 07:00 PM-09:00 PM: Session 21 (SG Foyer ABC) Poster Presentation


MICRONUTRIENT CONTENT OF SELECTED YELLOW BABOON (PAPIO CYNOCEPHALUS) FOODS AT THE TANA RIVER PRIMATE NATIONAL RESERVE, KENYA

V. K. Bentley-Condit1 and M. Power2
1Grinnell College, Department of Anthropology, Grinnell, Iowa 50112, USA, 2Nutrition Laboratory, Conservation Ecology Center, National Zoological Park, Smithsonian Institution
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     We investigate the extent to which common Tana baboon food sources meet NRC dietary mineral recommendations as part of our ongoing yellow baboon nutrition research. Nutrient content and consumption data for the Mchelelo troop (n=75) are based upon January 1988-October 1992 observations (875 days; 4893 hourly scans) and chemical assays of 110 samples (56 flora species, 31 families). We assayed calcium, phosphorous, potassium, magnesium, iron, zinc, and manganese content for each using AA or UV spectrometry. The samples average: calcium=0.335% (SD=0.31); phosphorous=0.233% (SD=0.10); potassium=1.532% (SD=0.53); magnesium=0.215% (SD=0.14); iron=0.034% (SD=0.05); zinc=0.002% (SD=0.001); manganese=0.011% (SD=0.06) (DMB). We use the following formula to determine dietary mineral concentration: mineral concentration (mg/kg) = sum over all species of [(Average mg/kg mineral for a given species * % of observations for that species)/100]. The concentrations exceed NRC recommendations for iron, manganese, magnesium, and potassium but are below recommendations for calcium, phosphorous, and zinc. The three top foods contribute more to dietary minerals than expected from relative consumption (X2=53.475, df=6, p<0.001). The top 10 foods account for up to 95% of some dietary minerals with a few species responsible for large proportions of particular minerals (e.g., Salvadora persica: iron, Dobera glabra: manganese, Hyphaene compressa: zinc.) Thus, our data indicate a limited number of Tana baboon food sources meet most dietary mineral needs and mineral content may be a factor in food choices.