黄羊消化道形态和结构的特征

MORPHOLOGICAL AND STRUCTURAL FEATURES OF THE DIGESTIVE TRACTS OF MONGOLIAN GAZELLE

研究了 51副黄羊消化道的形态结构特征。腮腺 ( g)占体重 (kg)的比率为 1 0 35,整个胃组织重占体重的比率为 2 74 %～ 2 89% ,瘤胃最大 ,占整个胃组织重量的 72 %～ 76% ,其次是网胃 ( 9%～ 10 % )、皱胃 ( 8%～ 10 % )和瓣胃 ( 5%～ 6% ) ,除瘤胃与体重呈线性正相关外 ,其它 3个分胃与体重呈线性负相关 ,瘤胃表面扩张系数 (SEF)值为 8 52 ,瘤胃粘膜乳突密度为 89,整个肠道长度是体长的 17 8倍 ,肠重占体重的比率为 4 96% ,从消化道的形态结构特征分析 ,黄羊属于混饲者。

Fifty one digestive tracts of Mongolian gazelle (Procapragutturosa) were studied. The relative weights of parotid glands to body weight account for 1.035(g/kg). The total tissue weights ranged from 2.74% to 2.89% of body weight. Rumens were heaviest, representing from 72% to 76% of the total stomach, followed by reticulums (9%～10%), abomasums (8%～9%) and omasums (5%～6%). Weights of rumens were directly proportional to body weights and weights of other stomach compartments were inversely related to body weights. The surface enlargement factor (SEF) was 8.52. The papilla density was 89. The length ratio of total intestine to body length was 17.8. The relative weights of total intestine with contents to body weights was 4.96%. Mongolian gazelle was of a “mixed feeder” judged by its morphological and structural features of its digestive tracts.