Joeke Nijboer

Joeke Nijboer
Diergaarde Blijdorp · Veterinary Department

PhD

About

24
Publications
17,349
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241
Citations
Introduction
Additional affiliations
July 2015 - present
Diergaarde Blijdorp
Position
  • Nutritionist

Publications

Publications (24)
Article
This chapter provides an overview of the history of captive red panda diet development by discussing the anatomy and basal metabolic rate of red pandas, feeding ecology, nutritional recommendations for red pandas, and the effect of the diet on nutrition-related problems, and fecal quality. Red pandas, although classified with in Carnivora, exhibit...
Article
Among the artiodactyla, the suids are a group whose digestive physiology has hardly been investigated. The apparent digestibilities (aD) of macronutrients were measured in captive specimens of warthog (Phacochoerus africanus), red river hog (Potamochoerus porcus), and Visayan warty pigs (Sus cebifrons), and compared with those reported for babirusa...
Article
In captivity, langurs (foregut fermenting primates) often suffer from digestive disorders, and in particular display soft stools on diets with a high proportion of fruits, vegetables, and grain products. In this study, we tested whether the improvement in feces consistency expected after an omission of vegetables from a conventional diet was also a...
Article
Full-text available
A high intake of easily fermentable carbohydrates and a low intake of fiber material are generally regarded as major factors affecting the health of captive langurs. The effect on fecal consistency of excluding fruits and vegetables from the diet was evaluated in Javan langurs (Trachypithecus auratus auratus). Cross-over trials were carried out at...
Article
A variety of feeds are used in the nutrition of browsing ruminants. During digestion trials on okapis, feedstuffs of different facilities were sampled and the Hohenheim gas test was used as in vitro fermentation method to quantify their fermentative behavior. Forty-six feeds were analyzed (7, fruit and vegetable; 11, energy concentrates and pellete...
Article
Full-text available
Digestibility experiments were carried out with colobus monkeys (Colobus guereza) and spectacled leaf monkeys (Trachypithecus obscurus) in an attempt to relate diet composition, apparent macro-nutrient digestibility and faeces quality. The spectacled leaf monkeys were fed diets with different amounts of crude fibre, NDF and ADF. Faeces produced by...
Article
Full-text available
Colobines are a group of primates from southeast Asia and Africa that feed, in nature, exclusively on leaves, fruits and seeds of trees, which contain high amounts of fibre and secondary plant compounds. Up to 50% of the protein of their natural food is unavailable. The colobine stomach can be divided into the saccus gastricus, with or without a p...
Article
Full-text available
In captivity colobine monkeys often display a soft to watery faecal consistency, in contrast to their wild conspecifics, which usually display well-formed faeces. It has been suggested that dietary fibre, and possibly also dietary water content is related to faecal consistency. To further test this assumption we pooled data on 15 individual feeding...
Article
A digestibility trial was carried out in two black and white ruffed lemurs fed a zoo diet because the animals regularly produced soft feces. Food offered, food left over and feces were chemically analyzed. To check reproducibility, the digestibility trial was carried out twice with an interval of 21 days between the two trials. Apparent digestibili...
Article
In captivity, the nine-banded armadillo is on display in zoos or is used as laboratory animal, mainly for research on leprosy. The diet of the nine-banded armadillo under captive conditions differs from that in the wild. The armadillo is an insectivore in its natural habitat. In captivity, they are generally fed dog or cat food supplemented with fr...
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Calcium (Ca) and phosphorus (P) are very important minerals in reptile nutrition, but many diets still are not balanced. To achieve optimal growth, including a healthy skeleton and a strong shell, a well-balanced supply with these minerals is prerequisite. The purpose of this study was to evaluate the digestibility of diets with different calcium l...
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Full-text available
The effect of additional dietary fibre on the consistency of faeces was studied in a group of four François langurs (Trachypithecus francoisi) kept in Rotterdam Zoo. To increase fibre intake, a diet pellet rich in fibre was offered instead of the usual, commercial primate pellet. This dietary change raised the amounts of hemicellulose and cellulose...
Article
In May and June 1994 a survey of diets fed to captive southeast Asian colobines in European (n = 12) and North American (n = 9) zoos was conducted. Most diets were very complex, comprising an average of 25 ingredients; 149 different foods were listed in responses. Comparison of diets fed showed that European zoos feed a greater variety of fruits an...
Article
The three species of crowned pigeons are endemic to New Guinea and nearby islands where they are declining in numbers, especially near human settlements where hunting pressure is high. Little is known about their biology and ecology or about the magnitude of the impact of the threats from hunting, capture for trade, and loss of their lowland forest...
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Full-text available
A high incidence of gastrointestinal disorders as diarrhea, phytobezoars, bloated conditions and weight loss have been observed in captive langurs. This thesis focuses on the effect of the food intake in captive langurs in relation to the quality of faeces and its implications for langurs kept in captivity. According to the literature colobines hav...
Article
The fourth volume continues the highly regarded series of Zoo Animal Nutrition books. Based on papers from the 5th European Zoo Nutrition Conference held in Chester in 2008, it draws upon the expertise of nutritionists, veterinarians, zoo professionals, lab and field-based biologists and represents current research in this field. Nutritional consid...

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