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Alnimer, M., Tabbaa, M. J., Ababneh, M. M. and Lubbadeh, W. F. (2009): Applying variations of the Ovsynch protocol at the middle of the estrus cycle on reproductive performance of lactating dairy cows during

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Senger, P. L. (1994): The estrus detection problem: new concepts, technologies, and possibilities. J. Dairy Sci. 77, 2745. The estrus detection problem: new concepts, technologies, and possibilities

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Authors: J. Fáy, T. Mező, L. Solti, Anna Wölfling and Zs. Abonyi-Tóth

Cytology. Part I. Useful tool for staging the canine estrus cycle. Comp. Continuing Education, Vol. 6 (4): April 1984, 288--298. Vaginal Cytology. Part I. Useful tool for staging the canine estrus cycle

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Authors: Sibel Yavru, Mehmet Kale, Mehmet Gulay, Orhan Yapici, Oya Bulut and Ayhan Ata

oestrus on conception rate after artificial insemination in cows. J. Anim. Sci. 72 , 535–538. Fotoohi H. Effect of abnormal vaginal discharge at oestrus on conception rate after

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Authors: Consuelo López-Bayghen, Heidy Zozaya, Luis Ocampo, Gordon Brumbaugh and Héctor Sumano

155 Meyer, J. P. (1997): Control and synchronization of the estrus cycle and ovulation. In: Morrow, E. P. (ed.) Current Therapy in Large Animal Theriogenology. W. B. Saunders, Philadelphia

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Authors: Adam Šuluburić, Svetlana Milanović, Sanja Vranješ-Đurić, Ivan B. Jovanović, Tomislav Barna, Milica Stojić, Natalija Fratrić, Ottó Szenci and Dragan Gvozdić

. Macmillan , K. L. ( 2010 ): Recent advances in the synchronization of estrus and ovulation in dairy cows . J. Reprod. Dev. 56 , S42 – S47 . Maillo , V. , Duffy , P. , O

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Authors: Tihomira Gojmerac, Marija Uremović, Z. Uremović, S. Ćurić and Nina Bilandžić

estrogen, progesterone and luteinizing hormone prior to estrus and during pregnancy in pigs. Endocrinology 91, 675-679. Plasma estrogen, progesterone and luteinizing hormone prior to estrus and during pregnancy in pigs

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the time when they began to show signs of oestrus. Because the objective of the current study was to establish the relationships between several steroid hormones and RAAS during the periovulatory period, blood samples were taken every day, from day −5

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Authors: Attila Répási, Zoltán Szelényi, Jenő Reiczigel, Árpád Bajcsy, András Horváth and Ottó Szenci

Archbald, L. F., Risco, C., Chavette, P., Constant, S., Tran, T., Klapstein, E. and Elliot, J. (1993): Estrus and pregnancy rate of dairy cows given one or two doses of prostaglandin F2 alpha 8 or 24 hours apart

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, oestradiol-17 beta and progesterone during natural and induced oestrus in the dairy goat. Theriogenology 17 , 313–323. Saumande J. Plasma levels of LH, FSH, prolactin, oestradiol-17

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