大鵟消化系统的形态学研究

Morphological Observation of the Digestive System of Upland Buzzard

为了丰富大鸟狂的形态学资料,对冬季大鸟狂的消化系统进行了解剖和形态学观察。结果表明,大鸟狂食管纵向皱襞发达,具有较明显的嗉囊;肌胃壁薄于腺胃,肌肉和内壁类角质膜不发达;肠道较短,约为体长的1.6倍;小肠发达,占肠道总长的94.3%;盲肠不发达。大鸟狂具有食肉鸟类消化系统的典型特点。

For enriching biological material of Buteo hemilcasius, the systematical observation on morphological structures of digestive system of Buteo hemilasius in winter was carried out. Results are as follows ： the longitudial plica of Buteo hemilasius oesophagus is well developed and crop is obvious. Its muscular stomach wall is thinner than its gland stomach wall, and its muscle and the inter keratinized membrane is not so developed. The bird has short intestines which is about 1.6 times the length of its body and the small intestines is quite developed, making up 94.3 percent of the total length of its intestines. The appendix is not developed. In all the bird digestive system has the typical characteristics of prey bird.