Histomorphometric Analysis of the Endometrium of Jennies (<i>Equus asinus</i>) and Mares (<i>Equus caballus</i>) in Estrus: Anatomical Differences and Possible Reproductive Implications.

ABSTRACT: Assisted reproductive techniques are often extrapolated from horses to donkeys, despite poorer fertility outcomes in jennies. This issue has been attributed to unknown uterine species-specific differences. This study compared, through histomorphometry, the endometrium of jennies and mares. Endometrial biopsies (N = 12) were taken from reproductively sound jennies (n = 6) and mares (n = 6) in estrus. Histomorphometric analysis evaluated luminal (LE, µm) and glandular epithelium height (GE, µm), glandular lumen diameter (LD, µm), glandular area (GA, µm²), the number of glands (#G), and glandular tissue percentage (GT, %), measured in the stratum compactum (SC) and spongiosum (SS). A total of 30 measurements of glandular size parameters and 10 fields of glandular density parameters

SUBMITTER: Vallejo-Soto P 

PROVIDER: S-EPMC12784720 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature