Economic Value of Days Open for Holstein Cows of Alternative Milk Yields with Varying Calving Intervals
| Autor: | Holmann, Federico J., Shumway, C. Richard, Blake, Robert W., Schwart, Robert B., Sudweeks, E. Max |
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| Zdroj: | In Journal of Dairy Science March 1984 67(3):636-643 |
| Databáze: | ScienceDirect |
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