狩猟期におけるイノシシの胃内容

抄録

Stomachs of wild boars were collected from hunters in Hyogo, Kyoto and Osaka Prefectures from Oct. 1970 to '71. 134 contents were analysed and measured their volumes and weights. Some correlation is seen between the volume of content and the dry weight of stomach, namely body size. In the contents, vegetable items on the foods were found in 90% of the samples. They were chiefly fibrous tissue, subterrenean stems, roots and rhizomes. Acorns were scarcely found. Animal items appeared in 30% of the samples. Identification shows some earthworms, insects, frogs, birds (domestic fowls, probably wasted), and moles. Caloric estimation shows the animal lives under very poor nutritional condition. Even in the sample of the largest content, it provides only 500 kcal, which may be 12 to 15% of the daily need. The damages on agriculture by the animals in these prefectures are caused from this shortage of their foods, in the author's view.