Morphological and acrosomal changes of canine spermatozoa during epididymal transit

Table 1 Morphology of canine spermatozoa retrieved from different epididymal regions

Spermatozoa			Caput	Corpus	Cauda
Normal			24.7 ± 11.9^a	39.0 ± 13.8^b	50.5 ± 13.3^b
Abnormal	HEAD	pear-shaped	2.0 ± 6.9	3.2 ± 9.6	3.6 ± 12.7
		small	0.2 ± 0.6	0.2 ± 0.6	0.2 ± 0.6
		large	0.1 ± 0.3	0	0
		amorphous	0.2 ± 0.4	0.2 ± 0.4	0
		Total abnormalities	2.5 ± 6.8	3.5 ± 9.5	3.8 ± 12.7
	NECK/MIDPIECE	bent neck	4.8 ± 4.0	4.7 ± 2.5	6.2 ± 3.5
		bent midpiece	1.9 ± 1.5	1.4 ± 2.1	2.2 ± 1.7
		thick midpiece	0.4 ± 0.8	0.2 ± 0.6	0.2 ± 0.4
		Total abnormalities	7.1 ± 5.0	6.3 ± 4.0	8.5 ± 4.7
	TAIL	single bent	15.1 ± 7.5^a	33.8 ± 11.8^b	21.6 ± 8.6^a
		coiled	11.0 ± 11.0	6.2 ± 5.9	7.4 ± 7.3
		Total abnormalities	26.2 ± 12.5^a	40.1 ± 11.1^b	29.0 ± 13.6^a
Immature	CYTOPLASMIC DROPLET	proximal	44.8 ± 19.5^a	8.9 ±6.8^b	3.6 ± 3.9^b
		distal	4.7 ± 6.8^a	20.0 ± 10.4^b	11.4 ± 9.0^a
		Total immature	49.6 ± 20.1^a	28.9 ± 11.9^b	15.0 ± 11.0^c

Data are percentages, presented as mean ± SD.
Different superscripts within rows (abc) indicate significant differences (P<0.05).

ISSN: 1751-0147