Food habitat of wild boars in Kami-Kamagari Island in Hiroshima

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  • Koba Yuki
    Graduate School of Biosphere Science, Hiroshima University
  • Sakaguchi Mika
    Graduate School of Biosphere Science, Hiroshima University
  • Muraoka Rika
    Graduate School of Biosphere Science, Hiroshima University
  • Obitsu Taketo
    Graduate School of Biosphere Science, Hiroshima University
  • Tanida Hajime
    Graduate School of Biosphere Science, Hiroshima University

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  • 広島県呉市上蒲刈島におけるイノシシの食性
  • ヒロシマケン クレシ カミカマガリジマ ニ オケル イノシシ ノ ショクセイ

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Abstract

We examined 268 wild boar (Sus scrofa) stomachs collected from July 2003 to November 2006 in Kami-Kamagari Island, Hiroshima Prefecture. Vegetable matter contained agricultural crops such as citrus fruits, sweet potatoes, rice, and maize as well as wild plants such as acorns and green plant matter. Animal matter found included myriapods, insects, mollusks, gastropods, reptiles, birds and mammals. When large amount of citrus fruit were found in stomach contents, a low amount of acorns was observed and vice versa. From July to December, the average water percentage in the stomach was 73.3%. Water percentage in July and August was higher than other months. The average crude protein percentage in stomach was about 18%, which is higher than commercial pig feed. Urea and ammonia were detected in the gastric contents of a wild boar. This suggests the possibility that the Lactobacillus with urease activity exists in the stomach.<br>

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