Nutritional composition of browse and diets fed to ungulates at the Breeding Centre for Endangered Arabian Wildlife

Whitehouse-Tedd, K.M. ORCID: 0000-0003-0061-489X, Hebellmann, L., Strick, J., Vercammen, P. and Dierenfeld, E., 2016. Nutritional composition of browse and diets fed to ungulates at the Breeding Centre for Endangered Arabian Wildlife. Journal of Zoo and Aquarium Research, 4 (2), pp. 65-76. ISSN 2214-7594

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Abstract

Captive browsing ruminants are particularly susceptible to gastrointestinal disorders, and inappropriate diets are an underlying factor. This study investigated the nutritional composition of browse and pelleted feedstuffs used in an Arabian facility and compared nutrient intake against current recommendations for exotic ungulates. Additionally, retrospective evaluation of post-mortem findings with regard to gastrointestinal pathologies was conducted (n = 497). Samples of browse from seven species of locally cultivated plants, as well as three brands of pelleted feeds, were submitted for laboratory analysis. Following a five-day feed intake study, nutrient intake was calculated. Only moderate variation was seen among browse species’ composition compared to previous reports. However, significant variation occurred between plant fractions (stem, leaves and seed pods) for neutral detergent fibre and several minerals. Browse comprised over half of the metabolisable energy (ME) intake of Arabian tahr (rabitragus jayakari), but only 11% of ME for Arabian gazelle (Gazella gazella cora) and Dorcas gazelle (G. gazella dorcas). However, no relationship could be detected between gastrointestinal disease and browse provision in these species. No nutrient deficiencies were identified, but the Arabian tahr diet exceeded the recommended amount of crude protein, and both gazelle diets provided excess iron, manganese, copper and zinc. These mineral excesses are the subject of on-going investigations in order to better balance the diets offered. Moreover, the high starch content of pelleted diets evaluated in the current study (22-29%, on a dry matter basis) indicates that a reduction in the proportional provision of pellets would improve the diet suitability, particularly for the gazelles. This study highlights a number of areas for potential improvement, although further research is required to fully understand the implications of these findings.

Item Type: Journal article
Publication Title: Journal of Zoo and Aquarium Research
Creators: Whitehouse-Tedd, K.M., Hebellmann, L., Strick, J., Vercammen, P. and Dierenfeld, E.
Publisher: European Association of Zoos and Aquaria
Date: 30 April 2016
Volume: 4
Number: 2
ISSN: 2214-7594
Divisions: Schools > School of Animal, Rural and Environmental Sciences
Depositing User: Linda Sullivan
Date Added: 09 Jun 2016 10:48
Last Modified: 09 Oct 2017 12:49
URI: http://irep.ntu.ac.uk/id/eprint/27954

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