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Relationship between fertility and the walking activity of cows at oestrus |
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| Authors: | Yániz J Santolaria P López-Gatius F |
| Affiliation: | Departamento de Producción Animal, Universidad de Zaragoza Escuela Politécnica Superior de Huesca, Universidad de Zaragoza, Ctra Cuarte s/n, 22071 Huesca, Spain. |
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| 本文献已被 PubMed 等数据库收录！ | |