DK Leaf-eater BasicDK038
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More informationLeaf monkeys/langurs
Trachypithecus/Colobinae
Natural diet Leaf monkeys/langurs
Leaf monkeys / langurs are herbivorous primates that mainly feed on (young) leaves. In addition to leaves, they also consume a variety of other plant material, such as bark, stems and flowers. When food is scarce, they may resort to eating more mature leaves and other parts of the plant that are harder to digest.
Feeding advice Leaf monkeys/langurs
Feed quantity per day
15-25%
Sample percentage calculation
If an animal weighs 8 kg and eats 15% of its body weight, it will get
8 x 0.15 = 1.2 kg feed in total per day
Feed composition
9% Concentrates
30% Leafy greens and cabbages
20% Other vegetables
40% Browse
1% Other
Proportions (fresh product)
0.09 x 1.2 kg = 108 g concentrates
0.3 x 1.2 kg = 360 g leafy greens and cabbages
0.2 x 1.2 kg = 240 g other vegetables
0.4 x 1.2 kg = 480 g browse
0.01 x 1.2 kg = 12 g other
Feeding advice Leaf monkeys/langurs
Feed quantity per day
15-25%
Sample percentage calculation
If an animal weighs 8 kg and eats 15% of its body weight, it will get
8 x 0.15 = 1.2 kg feed in total per day
Feed composition
9% Concentrates
30% Leafy greens and cabbages
20% Other vegetables
40% Browse
1% Other
Proportions (fresh product)
0.09 x 1.2 kg = 108 g concentrates
0.3 x 1.2 kg = 360 g leafy greens and cabbages
0.2 x 1.2 kg = 240 g other vegetables
0.4 x 1.2 kg = 480 g browse
0.01 x 1.2 kg = 12 g other
Diet Suggestions
Recommended
Variety of leafy vegetables
Variety of root/green vegetables
Variety of browse
Concentrates
In moderation
Nuts and seeds
Not recommended
Fruits
Starchy/ sweet vegetables
Products containing long-fibers
Common diseases
An unbalanced diet may result in one of these more commonly occurring diseases/conditions:
- Obesity
- Metabolic bone disease
Additional advice
- Divide the “Feed quantity per day” over at least two feeding moments per day.
- Supplement a diverse selection of vegetables (read more about differences between vegetables).
- Feeding fruits might lead to gastro-intestinal disturbances because of the high sugar level and low fiber level in cultivated fruits compared to wild fruits (read more about nutritional values of (wild) fruits and vegetables).
- Provide less palatable food in the morning, when hunger is greatest.
- Feeding in bowls is not recommended.
- In the winter months, either dried, frozen (thawed) leaves should be provided.
- Stimulate foraging behaviour by hiding, stacking or hanging the feed. Examples can be feeding puzzles, tubes, hanging boxes and/ or scatter feeding (read more about feed enrichment and foraging behaviour).
Diet Suggestions
Recommended
Variety of leafy vegetables
Variety of root/green vegetables
Variety of browse
Concentrates
In moderation
Nuts and seeds
Not recommended
Fruits
Starchy/ sweet vegetables
Products containing long-fibers
Common diseases
An unbalanced diet may result in one of these more commonly occurring diseases/conditions:
- Obesity
- Metabolic bone disease
Species within this group
- Hanuman langur
- Red-shanked douc langur
- Black-shanked douc langur
- Ebony langur
- Gray langur
- Silvered langur
- Delavour’s langur
- Francois’s langur
- Golden langur
- Nilgiri langur
- Capped leaf monkey
- Dusky leaf monkey
- Banded leaf money
- White fronted-leaf monkey
- Hose’s leaf monkey
- Mitered leaf monkey