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Macroscopic digestive tract anatomy of two small antelopes, the blackbuck (Antilope cervicapra) and the Arabian sand gazelle (Gazella subgutturosa marica)


Sauer, Cathrine; Bertelsen, Mads F; Hammer, Sven; Lund, Peter; Weisbjerg, Martin R; Clauss, Marcus (2016). Macroscopic digestive tract anatomy of two small antelopes, the blackbuck (Antilope cervicapra) and the Arabian sand gazelle (Gazella subgutturosa marica). Anatomia, Histologia, Embryologia, 45(5):392-398.

Abstract

The digestive tract anatomy of 14 blackbucks (Antilope cervicapra) and seven Arabian sand gazelles (Gazella subgutturosa marica) was quantified by dimensions, area and weight. Data from the two small-sized antilopinae were evaluated against a larger comparative data set from other ruminants classified as having either a ‘cattle-type’ or ‘moose-type’ digestive system. The digestive anatomy of the blackbuck resembled that of ‘cattle-type’ ruminants, which corresponds to their feeding ecology and previous studies of solute and particle retention time; however, a surprising exception was the remarkably small omasum in this species, which makes the blackbuck stand out from the general rule of a relatively large omasum in grazing ruminants. Sand gazelles had morphological features that corresponded more to the ‘moose type’ or an intermediate position, although previous studies of solute and particle retention time had led to the expectation of a more ‘cattle-type’ anatomy. The results show that outliers to general morphological trends exist, that findings on physiology and anatomy do not always match completely and that differences in the digestive morphology among ruminant species are more difficult to demonstrate at the lower end of the body mass range.

Abstract

The digestive tract anatomy of 14 blackbucks (Antilope cervicapra) and seven Arabian sand gazelles (Gazella subgutturosa marica) was quantified by dimensions, area and weight. Data from the two small-sized antilopinae were evaluated against a larger comparative data set from other ruminants classified as having either a ‘cattle-type’ or ‘moose-type’ digestive system. The digestive anatomy of the blackbuck resembled that of ‘cattle-type’ ruminants, which corresponds to their feeding ecology and previous studies of solute and particle retention time; however, a surprising exception was the remarkably small omasum in this species, which makes the blackbuck stand out from the general rule of a relatively large omasum in grazing ruminants. Sand gazelles had morphological features that corresponded more to the ‘moose type’ or an intermediate position, although previous studies of solute and particle retention time had led to the expectation of a more ‘cattle-type’ anatomy. The results show that outliers to general morphological trends exist, that findings on physiology and anatomy do not always match completely and that differences in the digestive morphology among ruminant species are more difficult to demonstrate at the lower end of the body mass range.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:05 Vetsuisse Faculty > Veterinary Clinic > Department of Small Animals
Dewey Decimal Classification:570 Life sciences; biology
630 Agriculture
Language:English
Date:2016
Deposited On:06 Sep 2016 15:12
Last Modified:30 Oct 2016 00:00
Publisher:Wiley-Blackwell Publishing, Inc.
ISSN:0340-2096
Additional Information:This is the peer reviewed version of the following article: Sauer C et al: Anatomia, Histologia, Embryologia, Volume 45, Issue 5, October 2016, Pages 392–398 , which has been published in final form at http://doi.org/10.1111/ahe.12214. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving (http://olabout.wiley.com/WileyCDA/Section/id-820227.html#terms).
Publisher DOI:https://doi.org/10.1111/ahe.12214
PubMed ID:26514913

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