Culturing two- to eight-cell caprine embryos using domestic chicken eggs

Area of Science:

• Veterinary Science
• Developmental Biology
• Embryology

Background:

• In vitro embryo culture is crucial for farm animal reproduction.
• Developing efficient culture systems for caprine (goat) embryos remains a challenge.
• Novel culture environments are needed to improve early-stage embryo development.

Purpose of the Study:

• To evaluate the chick embryo amniotic cavity as a supportive environment for early-stage caprine embryo development.
• To compare embryo development in the amniotic cavity with traditional in vitro culture methods.
• To determine the efficacy of this xenograft culture system for goat embryos.

Main Methods:

• Early-stage caprine embryos (2- to 8-cell) were collected after superovulation and mating.
• Embryos were cultured in vitro using different treatments: control medium, bovine fibroblast monolayer, chick embryo amniotic cavity, and trophoblastic vesicles.
• Two experiments varied culture durations and specific treatment combinations.

Main Results:

• Development of caprine embryos to the blastocyst stage was significantly enhanced in the chick embryo amniotic cavity compared to the control medium.
• The amniotic cavity provided a supportive microenvironment for embryonic development through to hatching blastocysts.
• Specific culture durations influenced outcomes, with longer co-culture periods showing potential.

Conclusions:

• The amniotic cavity of developing chick embryos can successfully support early-stage caprine embryo development.
• This xenograft culture system presents a viable alternative for advancing goat embryos.
• Further research can optimize this method for broader applications in farm animal biotechnology.