Analysis of food conditions of the Japanese serow (Capricornis crispus) for its conservation

在青森县下下半岛进行的研究结果如下。研究(3)在山形县下下县和朝日进行。(1)通过直接观察摄食行为，对全年日本母猪的Dlet进行了定量分析。Serw以114种植物和1种真菌为食。对16,686只被叮咬物的分析表明，燕子主要取食落叶阔叶树的树叶和树枝，秋季为54.8-58.3%，冬季为94.5-95.0%，其次是杂草(春季-秋季为16.5-39.1%)。(2)饲料和粪氮含量具有明显的季节性变化。春季至秋季日粮粗蛋白含量为15.8~20.9%，可满足野生反刍动物最大生长所需的日粮蛋白质需求。冬季饲料粗蛋白含量为7.8%，满足了野生反刍动物饲养所需的饲料蛋白质需求。(3)雌性成虫的平均领地面积下下岛为1.05ha，朝日为30.9ha。朝日的冬季食物供应量是下岛县的66.1%，领土大小与食物供应量呈负相关。这两个地区的粪便氮含量显示(4)对单独确定的领地持有人24年的观察表明，领地大小与成虫密度呈负相关。(5)1999年建立了2m×2m的实验围栏，记录了2年来灌木盖度的变化。不同饲喂方式对猪笼草的树高生长、花蕾数、花蕾层数均有影响。膜藻类。

Results of research conducted on the Shimokita Peninsula, Aomori Prefecture, are as follows. Research (3) was conducted in Shimokita and Asahi, Yamagata Prefecture.(1) Dlet of the Japanese serow was analysed quantitatively throughout the year by direct observation of feeding behavior. Serows fed on 114 plants species and one species of fungus. Analyses of 16,686 bites indicated that serows fed mainly on leaves and twigs of deciduous broad-leaved trees, which formed 54.8-58.3% of the diet in autumn and 94.5-95.O% in winter, followed by forbs (16.5-39.1% from spring to autumn).(2)Dietary and fecal nitrogen content showed a clear seasonal change. Dietary crude protein content was 15.8-20.9% between spring and autumn, which satisfied the dietary protein requirements for maximum growth for wild ruminants. Dietary crude protein content was 7.8% in winter, which satisfied the dietary protein requirernents for maintenance for wild ruminants.(3)Mean territory size of female adults were 1O.5 ha in Shimokita and 30.9 ha in Asahi. Winter food availability in Asahi was 66.1% of that in Shimokita, and territory size was negatively correlated with food availability. Fecal nitrogen content in the two areas showed(4)Observations of territory holders individually identified over 24 years indicated that territory size was negatively correlated with adult density. It is strongly suggested that food availability controls adult density in the Japanese serowby influencing territory size.(5)Experimental enclosures (2m x 2m, 5plots)wereestablished in 1999, and changes in shrub cover have been recorded for 2.years. Influences of serow feeding were noticed on growth in height, number of buds, and stratification of buds of Lindera umbellata var. membranacea.