Sauer Cathrine, Bertelsen Mads F, Hammer Sven, Lund Peter, Weisbjerg Martin R, Clauss Marcus
Department of Animal Science, Aarhus University, AU Foulum, Blichers Allé 20, PO Box 50, DK-8830, Tjele, Denmark.
Center for Zoo and Wild Animal Health, Copenhagen Zoo, Roskildevej 38, DK-2000, Frederiksberg, Denmark.
Anat Histol Embryol. 2016 Oct;45(5):392-8. doi: 10.1111/ahe.12214. Epub 2015 Oct 30.
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.
通过尺寸、面积和重量对14只印度羚（印度黑羚）和7只阿拉伯沙瞪羚（阿拉伯半岛亚种鹅喉羚）的消化道解剖结构进行了量化。将这两种小型羚羊亚科动物的数据与来自其他反刍动物的更大的比较数据集进行了评估，这些反刍动物被归类为具有“牛型”或“驼鹿型”消化系统。印度羚的消化解剖结构类似于“牛型”反刍动物，这与其摄食生态以及先前关于溶质和颗粒保留时间的研究结果相符；然而，一个令人惊讶的例外是该物种的重瓣胃非常小，这使得印度羚有别于放牧反刍动物重瓣胃相对较大的一般规律。沙瞪羚的形态特征更符合“驼鹿型”或中间位置，尽管先前关于溶质和颗粒保留时间的研究曾预期其解剖结构更接近“牛型”。结果表明，存在偏离一般形态趋势的情况，生理学和解剖学上的发现并不总是完全匹配，并且在体重范围较低端，反刍动物物种间消化形态的差异更难体现。
