Milk urea concentration as an indicator of ammonia emission from dairy cow barn under restricted grazing
| Autor: | van Duinkerken, G., Smits, M.C.J., André, G., Šebek, L.B.J., Dijkstra, J. |
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| Zdroj: | In Journal of Dairy Science January 2011 94(1):321-335 |
| Databáze: | ScienceDirect |
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