[Objectives]This study was conducted to find out the causes of abnormal antler shedding in Père David s deer(Elaphurus davidianus).[Methods]Abnormally-shed antlers were compared with normally-shed antlers in term...[Objectives]This study was conducted to find out the causes of abnormal antler shedding in Père David s deer(Elaphurus davidianus).[Methods]Abnormally-shed antlers were compared with normally-shed antlers in terms of light condition,antler development and bone nutritional status during the abnormal shedding season in the growth area of Père David s deer.[Results]Abnormally-shed antlers had no significant differences in the development of shed antlers,or even in the overall composition of antlers,from those of normal Père David s deer.[Conclusions]Insufficient light was the main cause of abnormal antler shedding in Père David s deer.展开更多
Elaphurus davidianus is one of the rare species originally come from China. And study on intestine histology observation of Elaphurus davidianus has not been reported widely. In the test, microscopic morphology on int...Elaphurus davidianus is one of the rare species originally come from China. And study on intestine histology observation of Elaphurus davidianus has not been reported widely. In the test, microscopic morphology on intestinal tissue of Elaphurus davidianus was observed by the method of paraffin sectioning. Test results showed that jejunum epithelium villi structure of Elaphurus davidianus was obvious, a large number of intestinal glands distributed in lamina propfia of jejunal epithelium. There was lymphoid tissue distributing in the base of the mucosa. The muscularis mucosa was composed of smooth muscle, thickness of muscularis mucosae was about 53μm. There was no villous structure in the cecal mucosa of Elaphurus davidianus, capillaries in mucosal lamina propria were rich, the mucosal thickness was （236 ＋55）μm. There were large amounts of intestinal glands in inherent layer, thickness of mucosal muscle was about 27 μm. The blood vessels located in submucosal loose connective tissue were rich. The structure of small intestine was similar with that of large intestine. There was no villus structure in rectal mucosal epithelium, the maximum thickness of mucosal layer was 835μm, and the minimum thickness of mucosal layer was 313 μm. Mucosal muscular layer was developed, which was composed of several smooth muscle bands, different bundles scattered, the thickness was about 200 - 600 μm.展开更多
基金Supported by Science and Technology Research Project of Hubei Provincial Department of Education (B2018522).
文摘[Objectives]This study was conducted to find out the causes of abnormal antler shedding in Père David s deer(Elaphurus davidianus).[Methods]Abnormally-shed antlers were compared with normally-shed antlers in terms of light condition,antler development and bone nutritional status during the abnormal shedding season in the growth area of Père David s deer.[Results]Abnormally-shed antlers had no significant differences in the development of shed antlers,or even in the overall composition of antlers,from those of normal Père David s deer.[Conclusions]Insufficient light was the main cause of abnormal antler shedding in Père David s deer.
文摘Elaphurus davidianus is one of the rare species originally come from China. And study on intestine histology observation of Elaphurus davidianus has not been reported widely. In the test, microscopic morphology on intestinal tissue of Elaphurus davidianus was observed by the method of paraffin sectioning. Test results showed that jejunum epithelium villi structure of Elaphurus davidianus was obvious, a large number of intestinal glands distributed in lamina propfia of jejunal epithelium. There was lymphoid tissue distributing in the base of the mucosa. The muscularis mucosa was composed of smooth muscle, thickness of muscularis mucosae was about 53μm. There was no villous structure in the cecal mucosa of Elaphurus davidianus, capillaries in mucosal lamina propria were rich, the mucosal thickness was （236 ＋55）μm. There were large amounts of intestinal glands in inherent layer, thickness of mucosal muscle was about 27 μm. The blood vessels located in submucosal loose connective tissue were rich. The structure of small intestine was similar with that of large intestine. There was no villus structure in rectal mucosal epithelium, the maximum thickness of mucosal layer was 835μm, and the minimum thickness of mucosal layer was 313 μm. Mucosal muscular layer was developed, which was composed of several smooth muscle bands, different bundles scattered, the thickness was about 200 - 600 μm.
