- Ahmed, A., Ezzat, M., Nasra Ahmed, M., Ala'a Eldin Zain Elabdeen, A. and Sabry, M. (2016). Estrus Synchronization in Ossimi Sheep by Progestins. Alexandria Journal of Veterinary Sciences, 51(1): 207-214
- Ainsworth, L. (1985): Effects of norgestometimplants and fluorogestone acetate impregnated sponges on oestrus cycle length and lutead function of ewes. Animal Reproduction- Science, 9(1): 63-73.
- Ainsworth, L. and Wolynetz, S. (1982). Synchronization of estrus and reproductive performance of ewe treated with synthetic progestagens or by intravaginal sponge pessary. Journal of Animal Science, 54(6): 1120-1127
- Ali, A. (2007). Effect of time of eCG administration on follicular response and reproductive performance of FGA treated Ossimi ewes. Small Ruminant Research, 72(1): 33-37.
- Babazadeh aghdam, R., Moghaddam, Gh., Daghighkia, H., Rafat, S.A., Bakhshayesh khiabani, A. and Moghaddam, S. (2018) Effect of estrus synchronization and GnRH on some serumic indices and pregnancy rate of Makui sheep during the breeding season. Journal of Veterinary Clinical Patholpgy, 47(3): 219-231.
- Boscos, C.M., Samartzi, F.C., Dellis, S., Rogge, A., Stefanakis, A. and Krambovitis, E. (2002) Use of progestagen-gonadotrophin treatment in estrus synchronization of sheep. Theriogenology, 58(7): 1261-1272.
- Cavalcanti, A.D.S., Brandão, F.Z., Nogueira, L.A.G. and da Fonseca, J.F. (2012). Effects of GnRH administration on ovulation and fertility in ewes subjected to estrous Most recent issue. Revista Brasileira de Zootecnia, 41(6): 1412-1418.
- David, N. and Timothy, J. (2001). Arthur's Veterinary Reproduction and Obstetrics. 8th ed., USA, pp: 841-842.
- Didarkhah, M. Mohammadi, M. Jamili, F. and Bozorgmehr, J. (2012). The effect of various levels of PMSG on Baloochian sheep superovulation. Iranian Congress of Animal Sciences. Fifth Iranian Congress of Animal Sciences. [In Persian]
- Feeling, J.P.C., Kotze, W.F., Tylor, J. and Hagendijik, W.J. (1994). Synchronization of progestogen outside the normal breeding season. South African Journal of Animal Science, 24: 34-37.
- Godfrey, R.W., Collins, J.R., Hensley, E.L. and Wheaton, J.E. (1999). Estrus synchronization and artificial insemination of hair sheep ewes in the tropics. Theriogenology, 51(5): 985-997.
- Godfrey, R.W., Gray, M.L. and Collins, J.R. (1997). A Comparison of two methods of estrus synchronization in hair sheep in the tropics. Animal Reproduction Science, 47(2): 99-106.
- Hashemi, M., Safdarian, M. and Kafi, M. (2006). Estrous response to synchronization of estrus using different progesterone treatments outside the natural breeding season in ewes. Small Ruminant Research, 65(3): 279-283. [In Persian]
- Hayatu, A., Lisanework, E., Gebrehiwot, T., Alemselam, B. and Khar, S.K. (2009). Estrus synchronization in sheep with synthetic progestagens. Tropical Animal Health and Production, 41(7): 1521-1524.
- Ince, D. and Karaca, O. (2009). Effect of oestrus synchronization and various doses of PMSG administration in Chios x Kivircik (F1) sheep on reproductive performance. Journal of Animal and Veterinary Advances, 8(10): 1948-1952
- Islami Moghadam, H., Fazeli kiya, A. and Ashkani far, R. (2012) Effect of CIDR and PMSG on reproduction trait in kordi breed during out of breeding season . Fifth Iranian Congress of Animal Sciences. [In Persian]
- Lida, K., Kobayashi, N. and Fukui, Y. (2004). A comparative study of induction of estrus and ovulation by three different intravaginal devices in ewes during the non-breeding season. Journal of Reproduction and Development, 50(1): 63-69.
- Mamoui, M., Yaghoubi, H. and Roshanfekr, H. (2009). Effect of cider on induction, estrus synchronization and fertility of Sanjabi ewes in non-breeding season. Regional Science and Technology Information Center, 10(21): 3801-3807. [In Persian]
- Munro, R.K. and Bertroam, J. (1990). Progestrone administration did not affect the fertility of cattle following a controlled breeding program. Australian Journal of Experimental Agriculture, 30(2): 179-181.
- Powell, K.R., Kaps, M., Lambesson, W. and Keisler, R. (1996). Use of melengestrol acetate based treatments to induce and synchronize estrus in seasonaly anestrus ewes. Journal of Animal Science, 74(10): 2292 -2302.
- Rosado, J., Silva, E. and Galina, M.A. (1998). Reproductive management of hair sheep with progesterone and gonadotropin in the tropics. Small Ruminant Research, 27(3): 237-242.
- Sareminejad, P., Tabatabaei, S., Mamouei, M., Mirzadeh, K. and Boujarpour, M. (2014). The Effects of short and long term medroxy Progesterone acetate (MAP) sponge treatments on reproductive performance during the non-breeding season of Arabian ewes. Iran Journal of Applied Animal Science, 4(4): 747-751. [In Persian]
- Shahneh, A.Z., Tajangookeh, H.D., Panah, H.S. and Saki, A.A. (2006). Effect of controlled internal drug release device treatment duration and eCG dose on reproductive performance of seasonally anestrous fat-tailed Iranian ewes. Pakistan Journal of Biological Sciences, 9(8): 1552-1555.
- Shojaie, R., Kheradmand, A., Soukhtezari, A. and Khaldari, M. (2017). Estrus synchronization and fertility assessment using cider and PMSG hormone out of breeding season in Lori sheep. Regional Science and Technology Information Center, [In Persian]
- Sookhtehzary, A., Vojgani, M. and Niassari-Naslaji, A. (2006). Survey on efficacy of melatonin in the Atabi rams on improvement of reproductive performance in the anestrus Journal of Veterinary Research, 61(2): 181-185. [In Persian]
- Wildeus, S. (1999). Current concepts in synchronization of estrus: sheep and goats. Proceeding of the American Society of Animal Science, 77: 1-14.
- Zarkawi, M., Merstavi, M.R. and Wardeh, M.F. (1999). Induction of synchronized oestrus and early pregnancy diagnosis in Syrian Awassi ewes, outside the breeding season. Small Ruminant Research, 33: 99-102. [In Persian]
- Zeleke, M., Greyling, J.P.C., Schwalbach, L.M.J., Muller, T. and Erasmus, J.A. (2005) Effect of progestagen and eCG on oestrus synchronization and fertility in Dorper ewes during the transition period. Small Ruminant Research, 56(1): 47-53.
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