Preliminary evaluation of selected minerals in liver samples from springbok (Antidorcas marsupialis) from the National Zoological Gardens of South Africa

Mbatha, K. R., Lane, E. P., Lander, M., Tordiffe, A. S.W. and Corr, S. (2012) Preliminary evaluation of selected minerals in liver samples from springbok (Antidorcas marsupialis) from the National Zoological Gardens of South Africa. Journal of the South African Veterinary Association, 83(1), 119. (doi: 10.4102/jsava.v83i1.119) (PMID:23327132)

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Abstract

Limited information is available on the mineral nutrition of captive antelope in South Africa. Zoo animals are usually offered a very limited array of feeds, which may result in nutritional imbalances. As a pilot study to investigate the presence of myopathy in antelope at the National Zoological Gardens of South Africa (NZG), stored liver samples from six springbok (Antidorcas marsupialis) and seven other antelopes from the NZG, as well as selected food items, were submitted for analysis of selenium, copper, manganese and zinc content by spectrophotometry. Springbok liver levels of copper were 23.07 mg/kg ± 0.72 mg/kg, whilst manganese, selenium and zinc levels were 6.73 mg/kg ± 0.22 mg/kg, 0.14 mg/kg ± 0.05 mg/kg and 135.02 mg/kg ± 1.26 mg/kg, respectively. Liver mineral levels in the other species were very variable. Food item copper levels ranged from 4.00 mg/kg (Eragrostis tef) to 17.38 mg/kg (antelope cubes), lucerne (Medicago sativa) and E. tef contained no detectable selenium. The highest zinc levels were in antelope cubes (147.00 mg/kg) and the lowest were in lucerne (20.80 mg/kg). Interpretation of these results was hampered by the small number of samples and a paucity of information on liver mineral levels in free-ranging and captive antelope; however, results suggested that, in the springbok, whilst copper and manganese intake are likely adequate, selenium nutrition is probably insufficient and may account for the myopathy diagnosed. Zinc liver levels are possibly within the toxic range, perhaps as a result of the high levels of zinc in the antelope cubes. This pilot study highlighted the need to establish baseline mineral nutrition data for captive and freeranging antelope under South African conditions.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Corr, Sandra
Authors: Mbatha, K. R., Lane, E. P., Lander, M., Tordiffe, A. S.W., and Corr, S.
College/School:College of Medical Veterinary and Life Sciences > School of Veterinary Medicine
Journal Name:Journal of the South African Veterinary Association
Publisher:South African Veterinary Association
ISSN:1019-9128
ISSN (Online):2224-9435
Copyright Holders:Copyright © 2012 The Authors
First Published:First published in Journal of the South African Veterinary Association 83(1): 119
Publisher Policy:Reproduced under a Creative Commons license

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