A group of stallions with different reproductive indexes were used to study seasonal
variations in sperm quality (Equus caballus). Semen samples were collected from late
September to July and analyzed according to four seasonal periods: late September–
December, January–March, late March–May, and June–July. Parameters monitored
included sperm concentration, sperm motility, sperm morphology, sperm viability, acrosomal
status, plasma membrane stability, and sperm mitochondrial membrane potential. Overall …