美国绿头野鸭消化器官解剖学研究

Study of Anatomy of Digestive Organs of the Wild A.Platyrhynchos Grown in American

美国绿头鸭是我国近年引进的一个新品种，具有生长快、抗病力强、肉质鲜嫩、营养价值高的特点。为了促进绿头野鸭的发展，提高生产和经济效益，满足人们生活的需要，为开展大规模集约化养殖、科学的饲养管理，特对绿头野鸭消化器官作了系统解剖学观察。

The gross anatomy method was adopted to study the strcture of the digestive organs of the wild A.platyrhynchos (8♂、4♀)grown in American.They killed and anatomized,and their digest organs were observed.measured and weighted.The results Showed that the length of all digest organs were respectively upper beak 6.1± 0.5 cm.down beak 5.6± 0.8 cm .eso phagus 23.5 2 cm. ventriculus glandularis 4.5 cm .ventriculus muscularis5.5 cm duodenum 24 ±25 cm jejunum 80±23 cm, ileale 11.5± 1 cm .the left and ritht cecums both 13± 1.5 cm.rectum 7.5 ±1 cm.cloaca 4.5± 1 cm.Hepar andpancreas respectively weighed 33.75 ±2 g and 3 ±0.5 g