Abstract # 13354 Poster # 162:

Scheduled for Friday, August 23, 2019 06:00 PM-08:00 PM: (Alumni Lounge) Poster Presentation


A POPULATION-LEVEL INTERVENTION FOR OBESITY USING A LOW-STARCH AND HIGH-FIBER BISCUIT DIET IN A TROOP OF OUTDOOR LAB-HOUSED JAPANESE MACAQUES (MACACA FUSCATA)

A. Haertel
Oregon National Primate Research Center, 505 NW 185TH AVE, BEAVERTON, Oregon 97006, USA
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     Obesity can be difficult to control when laboratory animals are housed and fed ad libitum together in one large enclosure. Semi-annual body condition scores revealed geriatric Japanese macaques (Macaca fuscata) were overweight for many years in the Oregon National Primate Research Center’s breeding colony. The standard fiber-balanced biscuits fed to the troop contained 26% starch and 12% fiber. In a trial to reduce obesity, a biscuit diet containing 8% starch and 18% fiber was fed to the troop of about 200 Japanese macaques. We hypothesized a low-starch and high-fiber biscuit diet fed ad libitum would reduce average body condition scores of geriatric age macaques. Body condition scores were recorded semi-annually for 3 years before and 2 years during the diet trial. An interrupted time series regression study design was used to evaluate the effectiveness of the population-level health intervention. Average body condition scores of geriatric macaques were significantly lower while the troop was fed the low-starch and high-fiber biscuit diet, but the diet trial was discontinued after 1.5 years on the trial when the average body condition score of geriatric macaques was thin. The average body condition score of geriatric macaques recovered when the troop was fed the standard fiber-balanced monkey chow.