中文摘要：

为了给非洲鸵鸟（Struthio camelus）雏鸟的饲养管理、生理机能研究和疾病防治提供可靠的形态学依据,采用石蜡切片技术,对6羽50日龄非洲鸵鸟雏鸟消化管的组织学结构进行了观察。结果显示,其消化管具有一般的4层结构。食管有粗大的皱襞,肌层发达,有发达的食管腺;无嗉囊;腺胃的腺体由位于固有膜的单管状腺和位于黏膜下层发达的复管状腺组成;肌胃的黏膜肌层较明显,由内纵肌和外环肌组成;小肠绒毛较长,有分支现象,未见中央乳糜管结构;十二指肠的固有膜中有发达的腺体和集合淋巴小结,黏膜下层内无十二指肠腺;从十二指肠到回肠,肠绒毛的汇合及分支现象更加明显,固有膜内集合淋巴小结的数量逐渐减少,并且空肠的绒毛弯曲呈“S”型;具有一对发达的盲肠;结肠异常发达,黏膜上皮为复层柱状上皮,其间夹有杯状细胞,有黏膜皱襞,绒毛短且发达。非洲鸵鸟雏鸟消化管的特点可能与其食性有关,这决定了非洲鸵鸟具有较强的消化吸收能力。

英文摘要：

The histological structure of digestive tracts from six 50-day old African Ostrich Chicks（ Struthio camelus ） were studied by paraffin sectioning and haematoxylin-eosine （ H. E） staining. It is indicated that African Ostrich＇s digestive tract is composed of four conventional layers. The grossus plica, developed muscularis, and developed esophageal glands exist in the esophagus. Ingluvies is not observed. The glandular glands in glandular stomach consist of simple tubular glands in the lamina propria and compound tubular glands in the submucosa. The muscularis mucosa of the muscular stomach is obvious, and it is composed of internal-longitudinal and external-ring smooth muscles. The villi in small intestine are long and branchy, but they contain no central chyle vessels. There are developed intestinal gland and many aggregated lymphoid nodule in the lamina proper of the duodenum. There is no duodenal gland in the submucosa. From duodenum to ileum, intestinal villi have more evident confluences and branches; the intestinal villi in jejumum are crook and ＂S＂ shaped, and the number of aggregated lymphoid nodule gradually decreases. African ostrich has a pair of developed cecum and very developed colon, where the epithelium mucosae is stratified columnar epithelium with many goblet cells , and where there are mucosa plica and short and developed villi. These features of the digestive tract are possibly related food habit, and determine the fact that African Ostrich has a strong ability to digest and absorb food.