HP and cyclic hematopoiesis: In the seminiferous cords/tubes of animals with CH, as compared to the Control, a greater number of gonocytes was observed at 5, 8 and 10 dpp with a decrease in the number of spermatogonia starting at 8 dpp (Table 1; Figures 2F–Hp < 0.05); thus, generating a reduction in the gonocyte differentiation index (Table 1, p < 0.05) at 8 and 10 dpp.