Ramai (ISIS #20164) is a female Sumatran orangutan (Pongo pygmaeus abeiii) who was born at the Toronto Zoo on 4 October 1985. She was parent-reared, and currently weighs approximately 62 kg. Ramai has had a history of loose stool and skin problems. A fecal scoring chart was developed to illustrate the range of fecal consistency observed in orangutans at the...
The diet of Sumatran orangutans at Perth Zoo was reviewed and altered to simulate more closely foods available in the wild. Diversity of offered plants was increased to over eighty species. Cereal based concentrates were replaced by foods of animal origin, including fish and cheese. Dietary supplements were eliminated. The proportion of different foods was adjusted to meet Dietary Reference...
Blood samples were collected from 27 orangutans (Pongo pygmaeus) (14 captive and 13 semicaptive) and were analyzed for triglycerides, total cholesterol, high density lipoprotein cholesterol (HDLC), low density lipoprotein cholesterol (LDLC), sodium, potassium, chloride, calcium, phosphate, glucose, Cortisol levels, total white blood cells (WBC) and WBC differential count. There were significant differences (P<0.05) in total cholesterol and HDLC level between...
The diets of free-ranging orangutans are high in structural cell wall material, which comprises the fiber fraction in plants [Hamilton and Galdikas, 1994]. Microbial populations residing in the hindgut accomplish fiber digestion via fermentation. Animals use volatile fatty acids, end products of fiber fermentation, as a source of energy. Readily available produce items contain small amounts of fermentable fiber [Schmidt...
To test whether milk consumption facilitates performance of regurgitation and reingestion (R/R) in captive gorillas, an experiment was conducted in which milk was removed from the gorilla diet at Zoo Atlanta. The study was conducted using a withdrawal design (BTB), in which a baseline period (B) of 10 days was followed by a treatment period (T) of 10 days, followed...
Many studies report what wild orangutans (Pongo pygmaeus) select for food. Hamilton and Galdikas (1994) determined wild diets contained dietary neutral detergent fiber (NDF) levels of 75%. NDF represents structural polysaccharides (cellulose and hemicellulose (HMC)) potentially digested by microbial fermentation in the lower gut. Fiber presence in the gut and fermentation end-product production have been shown to prevent obesity and...
To compile information on the feeding of captive orangutans, a diet survey was sent to institutions that had contributed medical records for an earlier report on orangutan management (Dierenfeld 1990). Based on analyses of the survey data, recommendations for diet changes are given.
Gorillas (Gorilla gorilla) pose an interesting and challenging dietetic study. Some differences exist among the diets of the three subspecies, probably due to habitat variation; unfortunately, most work has focused on the subspecies not represented in zoos.
Chimpanzee diets in captivity have changed dramatically over the course of the last 90+ years. The lack of adequate foods to meet the nutritional needs of the species was a major contributing factor to chimpanzee mortality in the early years of zoo management. The development of what was thought to be a nutritionally complete primate diet, or monkey chow, has...
This section is intended to provide bonobo caregivers with a basis for comparing the diet of wild bonobos to the diet offered to captive bonobos. This brief treatment of the subject primarily cites information gathered at the two major research sites, Lomako and Wamba. Because most of the published information on wild bonobo diets has come from these two sites,...