Abstract
The objective was to establish a protocol for the collection and evaluation of epididymal sperm in agoutis. Eight males (1–2 y old) underwent left orchidectomy and epididymal sperma were collected by retrograde flush. Average values were flush volume 32 μL, pH 6.9, sperm concentration 748 x 10 6 sperm/mL, with motility 86.5% and vigor 4.6. Viable sperm were present in all flush samples; 66% of sperm were alive, and 41.9% of sperm responded positively to the hypoosmotic test (using distilled water). There were 21.1% morphologically abnormal sperm, of which 2.0 and 19.1% were primary and secondary defects, respectively. The acrosome was intact in 99.5% of sperm. The sperm head was 4.89 ± 0.41 μm long and 3.13 ± 0.35 μm wide, with an area of 13.01 ± 2.01 μm 2. Midpieces were 5.33 ±0.44 μm long and 0.98 ± 0.13 wide, sperm tails were 29.91 ± 2.29 μm, and overall sperm length was 40.12 ± 2.44 μm. In conclusion, epididymal sperm collection from agoutis was satisfactory; the collected sperm has the potential to be stored, facilitating development of other reproductive biotechnologies for this species.
Published Version
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