بهبود کارایی برنامه دابل آوسینک با استفاده از مکمل پروژسترونی در گاوهای شیری هلشتاین پس از زایش

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Borchardt, S., Pohl, A., Carvalho, P.D., Fricke, P.M. and Heuwieser, W. 2018. Short communication: Effect of adding a second prostaglandin F2α injection during the Ovsynch protocol on luteal regression and fertility in lactating dairy cows: A meta-analysis. Journal of Dairy Science, 101(9): 8566–8571.

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Dirandeh, E., Roodbari, A.R. and Colazo, M.G. 2015. Double-Ovsynch, compared with presynch with or without GnRH, improves fertility in heat-stressed lactating dairy cows. Theriogenology, 83(3): 438–443.

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Giordano, J.O., Thomas, M.J., Catucuamba, G., Curler, M.D., Wijma, R., Stangaferro, M.L. and Masello, M. 2016. Effect of extending the interval from Presynch to initiation of Ovsynch in a Presynch-Ovsynch protocol on fertility of timed artificial insemination services in lactating dairy cows. Journal of Dairy Science, 99(1): 746–757.

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Lima, F.S., Bisinotto, R.S., Ribeiro, E.S., Ayres, H., Greco, L.F., Galvão, K.N., Risco, C.A., Thatcher, W.W. and Santos, J.E.P. 2012. Effect of one or three timed artificial inseminations before natural service on reproductive performance of lactating dairy cows not observed for detection of estrus. Theriogenology, 77(9): 1918–1927.

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Rivera, F.A., Mendonça, L.G.D., Lopes, G., Santos, J.E.P., Perez, R.V., Amstalden, M., Correa-Calderón, A. and Chebel, R.C. 2011. Reduced progesterone concentration during growth of the first follicular wave affects embryo quality but has no effect on embryo survival post transfer in lactating dairy cows. Reproduction, 141(3): 333–342.

Santos, J.E.P., Rutigliano, H.M. and Filho, M.F.S. 2009. Risk factors for resumption of postpartum estrous cycles and embryonic survival in lactating dairy cows. Animal Reproduction Science, 110(3-4): 207–221.

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Sartori, R., Haughian, J.M., Shaver, R.D., Rosa, G.J.M. and Wiltbank, M.C. 2004. Comparison of ovarian function and circulating steroids in estrous cycles of Holstein heifers and lactating cows. Journal of Dairy Science, 87(4): 905–920.

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Souza, A.H., Silva, E.P.B., Cunha, A.P., Gümen, A., Ayres, H., Brusveen, D.J., Guenther, J.N. and Wiltbank, M.C. 2011. Ultrasonographic evaluation of endometrial thickness near timed AI as a predictor of fertility in high-producing dairy cows. Theriogenology, 75(4): 722–733.

Wiltbank, M.C., Baez, G.M., Garcia-Guerra, A., Toledo, M.Z., Monteiro, P.L.J., Melo, L.F., Ochoa, J.C., Santos, J.E.P. and Sartori, R. 2016. Pivotal periods for pregnancy loss during the first trimester of gestation in lactating dairy cows. Theriogenology 86(1), 239–253.

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Wiltbank, M.C. and Pursley, J.R. 2014. The cow as an induced ovulator: Timed AI after synchronization of ovulation. Theriogenology, 81(1): 170–185.

Wiltbank, M.C., Souza, A.H., Carvalho, P.D., Bender, R.W. and Nascimento, A.B. 2012. Improving fertility to timed artificial insemination by manipulation of circulating progesterone concentrations in lactating dairy cattle. Reproduction, Fertility and Development, 24(1): 238–243.

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