The height of the rumenal papillae of the goats fed on hay is the highest, next is that of the goats fed on green grass, and that of the goats grazed is the shortest.

• 瘤胃前庭黏膜面及肉柱上均有乳头，游标卡尺测定结果显示，瘤胃胃壁乳头的高度表现为干草羊最高，其次为青草羊，放牧羊最矮；