Embryo technologies in donkeys (Equus Asinus).

This research is about the use of embryo technologies in donkeys to help preserve endangered donkey breeds, focusing on the reproductive techniques and their effectiveness, but points out the lack of funding for such conservation efforts.

Introduction

• The study discusses the drastic drop in the donkey population in industrialized nations over the last hundred years, a decline that has threatened nearly all European donkey breeds.
• Embryo technologies, such as those used in conserving endangered species like the Przewalski’s horse, have been utilized to help safeguard these breeds.

Implementation of Embryo Technologies

• Currently, it’s feasible to impregnate a synchronized recipient (a female donkey in this case) through the transfer of a donkey embryo.
• However, this reproductive technique is rarely employed within this species.

Limitations and Outcomes of the Approach

• Only a small number of offspring have been born following the transfer of cryopreserved (preserved by freezing at a very low temperature) embryos.
• Moreover, no reported pregnancies have resulted from studies involving in vitro fertilization (IVF).

Future Perspectives

• The paper highlights that the use of donkeys for dairy production, along with the growing emphasis on endangered donkey breed conservation, could stimulate more research and application of embryo technologies within this species.
• The call to action is tempered by the fact that funding remains insufficient, particularly from European national and international research agencies.