and expression in spermatozoa is associated with stallion fertility and seminal quality?

This study aims to investigate the gene expression of sperm-borne (), WW domain-binding protein 2N-Terminal Like (), and Tumor necrosis factor (), as a negative control, in spermatozoa and their relationship with fertility and seminal quality in stallions. Ejaculates from 40 Criollo stallions were used, whose fertility was assessed on the basis of their pregnancy rate per cycle in at least two breeding seasons. Pregnancy rates ranged from 20% to 90% and were used to divide the stallions into two groups: High rates (≥ 50%) (n = 25), and Low rates (< 50%) (n = 15).