MORPHOLOGICAL EXAMINATION OF STALLION SPE RM CELLS

46 ejaculates of 13 stallions were investigated for the prevalence of normal (Fig. 1) and abnormal sperm cells. In all, 1043 abnormal sperm cells were found, the percentage distribution of them was, as follows: proximal droplet 20.9; distal droplet 7.3; tail abnormalities 61.0; h ead abnormalities 6.7; neck abnormalities 4.1 (Figs 2 to 11). Total sp erm cell abnormalities varied in the ejaculates collected at different points of time (Figs 12 and 13), except for the proximal droplet, the presence of which was irreversible. High percentage of proximal dropl et in all ejaculates of the stallion Lupus significantly decreased the fertilization capacity of semen (conceptional rate 26.3 %).