Retraction : Resveratrol treatment during in vitro maturation enhances cumulus expansion and developmental competence of Sanjabi sheep oocytes.

This article released online on January 18, 2019 as advance publication was withdrawn from consideration for publication in The Journal of Reproduction and Development at author's request.

Resveratrol addition to in vitro maturation and in vitro culture media enhances developmental competence of sheep embryos.

The present study aimed to examine the effects of adding different concentrations of resveratrol during in vitro culture (IVC) alone and during both in vitro maturation (IVM) and IVC on ovine blastocyst yield and quality. Therefore, this study was conducted in two separate experiments. The first experiment was carried out to test the effect of different concentrations of resveratrol (0, 0.

Retraction: Resveratrol treatment during in vitro maturation enhances cumulus expansion and developmental competence of Sanjabi sheep oocytes.

This article released online on January 18, 2019 as advance publication was withdrawn from consideration for publication in The Journal of Reproduction and Development at author’s request.

Effect of sericin supplementation in maturation medium on cumulus cell expansion, oocyte nuclear maturation, and subsequent embryo development in Sanjabi ewes during the breeding season.

The purpose of this study was to evaluate the effect of sericin with different concentrations (0% [control], 0.1%, 0.5%, 1.

Effect of PGF2α and GnRH on the reproductive performance of postpartum dairy cows subjected to synchronization of ovulation and timed artificial insemination during the warm or cold periods of the year.

This study was designed to evaluate the reproductive performance of lactating dairy cows (Holstein Friesian) after the injection of PGF2α analogue on Day 15 postpartum, and GnRH analogue on Day 23 after artificial insemination (AI) with Presynch (two injections of PGF2α, administered 14 days apart starting at 30-35 days postpartum) + Ovsynch-based (GnRH-7 days-PGF2α-2 days-GnRH-16-20 hours-timed artificial insemination) treatments, during the warm and cold periods of the year. All the cows (n = 313) were assigned to one of the four groups including: M1 (n = 72) in which the cows were treated with PGF2α on Day 15 postpartum + Presynch-Ovsynch + GnRH on Day 23 post-AI; M2 (n = 41) in which the cows received PGF2α on Day 15 postpartum + Presynch-Ovsynch; M3 (n = 100) including the cows that got Presynch-Ovsynch; and control group (n = 100) including the cows that were not treated and were inseminated at natural estrus. Pregnancy diagnosis was performed 28 to 35 days post-insemination by means of ultrasound.