Advances in Animal Reproductive Technologies (Spotlight on Early Embryo Development)

A special issue of Veterinary Sciences (ISSN 2306-7381).

Deadline for manuscript submissions: 3 June 2024 | Viewed by 2482

Special Issue Editor


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Guest Editor
Instituto Nacional de Investigação Agrária e Veterinária, 2005-424 Santarém, Portugal
Interests: animal reproductive technologies; embriology

Special Issue Information

Dear Colleagues,

Animal reproductive technologies have shown significant progress in recent decades, allowing for a huge genetic improvement, which is associated with higher numbers of embryos and pregnancies per unit of time. However, depending on the species and applied techniques, different success rates have been reported.  Moreover, the cellular and molecular mechanisms controlling the early stages of embryo development are poorly understood, as are the different aspects related to its cryotolerance and survival ability. This Special Issue aims to revisit the challenges and opportunities associated with advances in animal reproductive technologies, with a particular focus on the strategies to improve posterior embryo development and the birth of healthy neonates. The submission of original research articles and reviews that focus on various aspects of animal reproductive biotechnologies, including estrus synchronization and ovulation control, artificial insemination, oocyte maturation and fertilization, embryo production and transfer, gamete and embryo cryopreservation, semen and embryo sexing, diagnostic and prognostic tools, and novel technical/therapeutic approaches, is encourage.

Dr. Rosa Pereira
Guest Editor

Manuscript Submission Information

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Keywords

  • reproduction
  • ART
  • artificial insemination
  • oocyte maturation
  • fertilization
  • embryo development
  • cryopreservation
  • sexing

Published Papers (1 paper)

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Research

13 pages, 847 KiB  
Article
Improving Cryopreservation Efficiency and Pregnancy Rate through Superovulation with Follicle-Stimulating Hormone in Korean Hanwoo Cows via Ovum Pick Up
by Daehyun Kim and Junkoo Yi
Vet. Sci. 2023, 10(9), 578; https://doi.org/10.3390/vetsci10090578 - 18 Sep 2023
Viewed by 1566
Abstract
The aim of this study was to devise an efficient technique for generating embryos from high-quality bovine females. Oocytes were collected from 20 control and 15 Hanwoo (Bos taurus coreanae) females treated with the FSH. A combination of decreasing FSH doses [...] Read more.
The aim of this study was to devise an efficient technique for generating embryos from high-quality bovine females. Oocytes were collected from 20 control and 15 Hanwoo (Bos taurus coreanae) females treated with the FSH. A combination of decreasing FSH doses (36, 36, 24, and 24 mg, 12 h apart), progesterone, estrogen, and prostaglandins were administered to synchronize and mildly stimulate the animals. The FSH-treated group (1125 oocytes) and control group (1022 oocytes) exhibited a higher proportion of grade A and B oocytes (88.2%) than the other grades (p < 0.05), with most at the germinal vesicle 2 stage (64.0%). Moreover, the FSH-treated group achieved a notably higher blastocyst rate (44.7%) compared to the control group (31.1%) (p < 0.05). After undergoing vitrification and in vitro culture (IVC) warming, embryos in the FSH group exhibited higher re-expansion rates (grade 1: 86.9%; grades 2 and 3: 57.9%) compared to those in the control (p < 0.05). This highlights the positive impact of FSH treatment on in vitro embryo production (IVEP) and the OPU rate. Full article
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