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作者:Kavita , Jagat Bir Phogat , Anand Kumar Pandey ...
来源:[J].Reproductive Biology(IF 1.222), 2018, Vol.18 (2), pp.161-168Elsevier
摘要:... Therefore, the investigation was conducted to compare efficacy of melatonin for induction of estrus and conception rate with Ovsynch protocol in summer anestrous Murrah buffalo heifers. Thirty, summer anestrous Murrah buffalo heifers were selected and divided into two groups-...
作者:Aly M. Karen , Samy A. Darwish
来源:[J].Animal Reproduction Science(IF 1.897), 2009, Vol.119 (1), pp.17-23Elsevier
摘要:Abstract(#br)The aim of the present study was to evaluate the efficacy of an Ovsynch protocol in the cyclic and non-cyclic Egyptian buffaloes in the summer. The present study was carried out on 21 Egyptian pluriparous buffalo cows (11 cyclic and 10 acyclic) and 8 heifers (5 cyc...
作者:E. Dirandeh
来源:[J].Animal Reproduction Science(IF 1.897), 2014, Vol.149 (3-4), pp.135-140Elsevier
摘要:Abstract(#br)The objective was to compare fertility in cows using an Ovsynch protocol starting on day 6 of first postpartum estrous cycle with an Ovsynch protocol initiated at random stages of the estrous cycle during heat stress (temperature-humidity index (THI) = 77–83). Cow...
作者:P.D. Carvalho , M.C. Wiltbank , P.M. Fricke
来源:[J].Journal of Dairy Science(IF 2.566), 2015, Vol.98 (12), pp.8800-8813Elsevier
摘要:Abstract(#br)Ovulation to the first GnRH (G1) treatment of the Ovsynch protocol improves synchronization rate and pregnancies per AI (P/AI). Elevated progesterone (P4) concentrations at G1 decrease the ovulatory response by decreasing the magnitude of the GnRH-induced LH surge. ...
作者:D Cavestany , A Meikle , H Kindahl ...
来源:[J].Theriogenology(IF 2.082), 2003, Vol.59 (8), pp.1787-1798Elsevier
摘要:Abstract(#br)To evaluate the effects of incorporating medroxyprogesterone acetate (MAP) in an Ovsynch protocol, cyclic lactating dairy cows were assigned randomly to two groups (control and MAP, n =8 each). Ovsynch treatment (Day 0: GnRH, Day 7: PG, Day 9: GnRH) was initiated at...
作者:R.S. Bisinotto , L.O. Castro , M.B. Pansani ...
来源:[J].Journal of Dairy Science(IF 2.566), 2015, Vol.98 (4), pp.2515-2528Elsevier
摘要:... Holstein cows from 5 commercial dairy farms were subjected to the Ovsynch-56 protocol (d −10 GnRH, d −3 PGF 2α , d −0.7 GnRH, d 0 AI). Ovaries were scanned by ultrasonography on d −10. Within farm, cows without CL were blocked by pen and assigned randomly to remain...
作者:R.S. Bisinotto , M.B. Pansani , L.O. Castro ...
来源:[J].Theriogenology(IF 2.082), 2015, Vol.83 (2), pp.257-265Elsevier
摘要:... Holstein cows were subjected to the Ovsynch protocol (Day −10 GnRH, Day −3 PGF 2α , Day −0.7 GnRH, and Day 0 timed AI). Ovaries were scanned by ultrasonography on Day −10 and cows with CL were blocked by pen and assigned randomly to receive no supplemental proge...
作者:M.B. Crane , P. Melendez , J. Bartolome ...
来源:[J].Theriogenology(IF 2.082), 2006, Vol.66 (5), pp.1243-1248Elsevier
摘要:Abstract(#br)The objective of this study was to evaluate the association between the level of milk production on the day of diagnosis of ovarian cysts and treatment response using the Ovsynch protocol. On the day of cyst diagnosis (Day 0), 260 lactating dairy cows with ovari...
作者:P.D. Carvalho , J.N. Guenther , M.J. Fuenzalida ...
来源:[J].Journal of Dairy Science(IF 2.566), 2014, Vol.97 (10), pp.6305-6315Elsevier
摘要:Abstract(#br)Presynchronization strategies, such as Presynch-Ovsynch and Double-Ovsynch, increase fertility to timed artificial insemination (TAI) compared with Ovsynch alone; however, simpler presynchronization strategies could reduce costs and simplify reproductive management...
作者:M.G. Colazo , P. Ponce-Barajas , D.J. Ambrose
来源:[J].Journal of Dairy Science(IF 2.566), 2013, Vol.96 (12), pp.7640-7648Elsevier
摘要:Abstract(#br)A protocol for presynchronization of ovarian status with 2 injections of PGF 2α given 14 d apart, with the last PGF 2α injection given 12 or 14 d before Ovsynch increases pregnancy per artificial insemination (P/AI) in dairy cows. We determined the efficacy of...

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