Control of energy balance by a wild ungulate, the kudu (<i>Tragelaphus strepsiceros</i>) through adaptive foraging behaviour

Owen‐Smith, Norman

doi:10.1079/pns19970006

Cited by 22 publications

(2 citation statements)

References 15 publications

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“…Browse can help to address this. Browsers will utilize the available species during both wet and dry seasons and increase the use of browse species during extreme conditions of the dry season (Owen‐Smith, ; O'Kane et al ., ). African ruminants that favour grazing palatable and nutrient‐rich grasses available during the wet season (Treydte et al ., ) will also take advantage of the available browse during the dry season when grass quality alone cannot meet their nutritional requirements.…”

Section: Discussionmentioning

confidence: 99%

Seasonality affects leaf nutrient and condensed tannin concentration in southern African savannah browse

Naumann

Cooper

Muir³

2016

Afr. J. Ecol.

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Trees that maintain some leaves throughout dry seasons become important ruminant browse depending on nutritive and antinutritive values. Leaves from seven tree species that maintained some leaves during the dry season were collected during dry and wet seasons and analysed for nutritive and antinutritive values. Neutral detergent fibre of leaves was either not different or less (P ≤ 0.05) during the dry season as compared to the wet season depending on species. Acid detergent fibre was either not different or greater (P ≤ 0.05) during the dry season as compared to the wet season. Crude protein and condensed tannins (CT) were either not different or less (P ≤ 0.05) during the dry season than during the wet season for the seven species. The biological activity (protein‐binding ability; PB) of the CT was highly species specific and was either not different between seasons, more bioactive during the wet season, or more bioactive during the dry season depending on the species. Based on combinations of low fibre, high protein and potentially beneficial levels of bioactive CT, Senegalia caffra, Vachellia karoo and Searsia lancea may be the most promising dry‐season browse of the species studied.

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Section: Discussionmentioning

confidence: 99%

Seasonality affects leaf nutrient and condensed tannin concentration in southern African savannah browse

Naumann

Cooper

Muir³

2016

Afr. J. Ecol.

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“…Past studies of ungulate functional responses have traditionally used forage biomass as the measure of availability ( Trudell & White 1981; Hudson & Frank 1987; Andersen & Sæther 1992; Wilmshurst, Fryxell & Hudson 1995; Owen‐Smith 1997). This measure does not incorporate effects that the structural or spatial arrangement of plants may have on forage intake rates of ungulates.…”

Section: Introductionmentioning

confidence: 99%

The effect of tissue complexity and sward height on the functional response of Wood Bison

2000

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Summary 1.Little is known about the interplay between tissue complexity and tissue selection and its effect on the ungulate functional response. Effects of sward height and of bison tissue selectivity on the functional response of bison Bison bison athabascae Rhoads were examined. 2. The height of stem present in a sward was varied. Grazing depth of bison was negatively related to height of stem, and this relationship was more pronounced in tall swards. Bison preferred leaf to stem tissue at all sward heights, though preference of leaf was positively related to sward height. 3. While controlling for selectivity, a factorial design was used effectively to uncouple sward height from sward biomass. Intake rates and bite sizes obtained on simple swards were used to quantify functional responses. Without tissue selection, sward height had no effect on the functional response. Sward biomass explained 90% of the variation in intake rates. 4. Rates of bison food intake on complex swards with both stem and leaf tissue were significantly depressed at low sward biomass, relative to those obtained on simpler leaf-only swards. Thus, sward tissue composition is a crucial covariate for characterizing intake rates of grazing ungulates.

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The Comparative Feeding Bahaviour of Large Browsing and Grazing Herbivores

Searle

Shipley

2008

Ecological Studies

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Control of energy balance by a wild ungulate, the kudu (Tragelaphus strepsiceros) through adaptive foraging behaviour

Cited by 22 publications

References 15 publications

Seasonality affects leaf nutrient and condensed tannin concentration in southern African savannah browse

Seasonality affects leaf nutrient and condensed tannin concentration in southern African savannah browse

The effect of tissue complexity and sward height on the functional response of Wood Bison

The Comparative Feeding Bahaviour of Large Browsing and Grazing Herbivores

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