Figure 3. Histograms showing sperm quality parameters measured of artificial insemination semen doses stored 72 h of storage at 15–17 °C and hierarchically grouped according to the seminal plasma total antioxidant capacity (SP-TAC) as low (from 0.03 to 0.45 mmol/L, n° = 21), moderate (from 0.47 to 0.67 mmol/L, n° = 40) and high (from 0.68 to 1.04 mmol/L, n° = 29).

Data are showed as measurements recorded at 24 h and 72 h of storage (absolute values, to the left of each chart) and as the difference in percentage between both storage times (relative values, to the right of each chart). (a,b) indicate significant differences (P < 0.05) among different SP-TAC groups.