1. Introduction
In the last years, a growing importance in donkey (Equus
africanus asinus) medicine has been observed as the result
of the interest for hypoallergenic milk production and
onotherapy. Furthermore, several donkey breeds are
considered as endangered because of their small population
size and serious risks of consanguinity [1]. To increase
donkeys’ population and breed’s biodiversity preservation,
several research projects on donkey reproduction have