牛行動調査
the behaviour monitoring
2001年12月5日(水)
5 Dec. 2001
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| 5分ごとに
monitoring every 5 minites | 採食・反芻，起立・反芻を観察
eating or ruminating, standing or sitting |
|
|
|
| 5分ごとに
monitoring every 5 minites | 採食・反芻，起立・反芻を観察
eating or ruminating, standing or sitting |