Recent developments in pig embryo transfer

Area of Science:

• Reproductive biology
• Veterinary medicine
• Swine reproduction

Background:

• Porcine embryo transfer (PET) has utilized surgical methods for decades, proving reliable but limited in farm utility.
• Recent advancements aim to enhance the practicality and efficiency of PET procedures.
• Minimally invasive endoscopic surgery and novel nonsurgical techniques are emerging.

Purpose of the Study:

• To review and compare surgical and nonsurgical methods for porcine embryo collection and transfer.
• To highlight advancements in PET techniques, focusing on farm applicability and animal welfare.
• To assess the success and feasibility of newly developed nonsurgical procedures.

Main Methods:

• Review of established surgical embryo collection and transfer techniques in pigs.
• Description of minimally invasive endoscopic surgical refinements for PET.
• Analysis of newly developed nonsurgical embryo collection and transfer procedures, noting limitations.
• Evaluation of the success rates and practical advantages of nonsurgical PET.

Main Results:

• Surgical methods for PET are reliable but not ideal for on-farm application.
• Endoscopic surgery offers a less invasive surgical alternative for PET.
• Nonsurgical embryo collection is currently limited to sows with specific uterine horn modifications.
• Nonsurgical embryo transfer has demonstrated recent success and significant advantages.
• Nonsurgical procedures are superior in terms of animal welfare and farm-based implementation.

Conclusions:

• Nonsurgical embryo transfer methods represent a significant advancement in swine reproduction.
• These newer techniques enhance animal welfare and are more practical for on-farm use.
• Further development and adoption of nonsurgical PET could revolutionize swine breeding programs.