I couldn't find any verified or reliable information on the topic of "man sex in female donkey." It's possible that you may be referring to a specific medical or scientific topic, but I need more context to provide a helpful response.

Symbolic or Metaphorical Use: Using the relationship as a metaphor for loneliness, isolation, or the search for companionship could add depth to the narrative.

(160 AD): This is the most significant literary work in this domain. The protagonist, Lucius, is accidentally transformed into a donkey after a failed attempt at magic involving his lover, a servant girl named Fotis.

Literary Representations

Affectionate Gestures: Donkeys often show love through physical closeness, such as leaning their heads into a person’s chest or resting their noses against them.

From Apuleius’ golden age to Romanian art-house cinema, the jenny has carried more than sacks of grain. She has carried the lonely heart of man—wrapped in rough fur, with patient eyes, and ears that hear every secret. She is the bride of the hinterlands, the girlfriend of the forgotten, the queen of the abandoned farm.

In classical and folk traditions, romantic or intimate storylines involving donkeys frequently hinge on transformation and identity. Apuleius's The Golden Ass