Progesterone-based fixed-time artificial insemination protocols for dairy cows: Gonadotropin-releasing hormone versus estradiol benzoate at initiation and estradiol cypionate versus estradiol benzoate at the end
| Autor: | Melo, L.F., Monteiro, P.L.J., Jr., Surjus, R.S., Drum, J.N., Wiltbank, M.C., Sartori, R. |
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| Zdroj: | In Journal of Dairy Science November 2016 99(11):9227-9237 |
| Databáze: | ScienceDirect |
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