Effects of Embryo Production Method and Culture Medium on Embryonic Development in Red-Rumped Agouti

Area of Science:

• Reproductive Biology
• Embryology
• Assisted Reproductive Technologies (ARTs)

Background:

• Assisted reproductive technologies (ARTs) are vital for overcoming reproductive challenges, but success hinges on understanding embryonic development.
• Current methods like in vitro fertilization (IVF) and artificial oocyte activation (AOA) show suboptimal developmental success, potentially due to culture media limitations.

Purpose of the Study:

• To optimize ART protocols for red-rumped agouti embryonic development.
• To evaluate the impact of production method (IVF vs. AOA) and culture medium (KSOM vs. SOF) on red-rumped agouti embryo development.

Main Methods:

• Red-rumped agouti oocytes were matured in vitro and subjected to either IVF or AOA.
• Presumed zygotes were cultured in either KSOM or SOF medium.
• Assessed oocyte-sperm interaction, morphology, developmental kinetics, and oxidative stress.

Main Results:

• In vitro fertilization (IVF) produced significantly higher rates of normal morphology and blastocyst formation compared to AOA.
• The KSOM medium supported superior embryonic development, with IVF-KSOM yielding the highest cleavage rates and morula formation.
• Only the IVF-KSOM group successfully produced blastocysts; no significant differences in oxidative stress were observed between groups.

Conclusions:

• The combination of in vitro fertilization (IVF) and KSOM medium is the most effective method for red-rumped agouti embryonic development.
• These findings provide crucial insights for refining ART protocols in red-rumped agoutis and related rodent species.