Soveri T, Nieminen M
Department of Clinical Veterinary Sciences, Faculty of Veterinary Medicine, University of Helsinki, Pohjoinen pikatie 800, FIN-04920, Saarentaus, Finland.
Anat Histol Embryol. 2007 Oct;36(5):366-70. doi: 10.1111/j.1439-0264.2007.00769.x.
The papillar morphology of the ventral and dorsal rumen of the wild forest reindeer (Rangifer tarandus fennicus Lönn.) and semidomesticated reindeer (R. t. tarandus L.) was studied in October and November 1996. The morphological measurements which were carried out were: the lengths of the papillae, the number of the papillae per square centimetre, the cross-sectional area and perimeter of sections cut from the middle of papillae. From these measurements mean papillar volume, areal papillar volume, mean papillar (epithelial) surface area, areal papillar surface and surface enlargement factor were calculated. No differences in these measurements between ventral and dorsal walls of the rumen were evident. The semidomesticated reindeer had longer papillar perimeters, larger mean and areal papillar surface areas, larger mean papillar volumes, and a larger surface enlargement factor in the ventral rumen than did forest reindeer. This may be a result of differences between feeding habits, the semidomesticated reindeer preferring a diet including more plants rich in carbohydrates e.g. lichens, which has resulted in a high production of volatile fatty acids and thus stimulation of papillar growth.
1996年10月和11月，对野生森林驯鹿（Rangifer tarandus fennicus Lönn.）和半驯化驯鹿（R. t. tarandus L.）瘤胃腹侧和背侧的乳头形态进行了研究。进行的形态学测量包括：乳头长度、每平方厘米乳头数量、从乳头中部切取的切片的横截面积和周长。根据这些测量值，计算了平均乳头体积、单位面积乳头体积、平均乳头（上皮）表面积、单位面积乳头表面积和表面增大因子。瘤胃腹侧和背侧壁在这些测量值上没有明显差异。与森林驯鹿相比，半驯化驯鹿瘤胃腹侧的乳头周长更长，平均和单位面积乳头表面积更大，平均乳头体积更大，表面增大因子也更大。这可能是由于饮食习惯的差异导致的，半驯化驯鹿更喜欢食用包括更多富含碳水化合物的植物（如地衣）的食物，这导致挥发性脂肪酸产量较高，从而刺激了乳头的生长。
