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Reprod Domest Anim. 2011 Feb;46(1):e74-8. doi: 10.1111/j.1439-0531.2010.01637.x.

Single layer centrifugation of stallion spermatozoa through Androcoll™-E does not adversely affect their capacitation-like status, as measured by CTC staining.

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  • 1Division of Reproduction, Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden.


This study was designed to evaluate the effect of single layer centrifugation (SLC) and subsequent cold storage on stallion sperm capacitation-like status and acrosome reaction. Three stallions were included in the study, with three ejaculates per stallion. The samples were examined 4, 24 and 72 h after collection, extension and SLC, with storage at 6°C. Sperm capacitation-like status was investigated using the fluorescent dye chlortetracycline (CTC). There was no difference in capacitation-like status between colloid-selected and non-selected spermatozoa. Sperm motility decreased significantly during cold storage, whereas the proportion of apparently capacitated spermatozoa increased. There was no change in the proportion of acrosome-reacted spermatozoa. In conclusion, SLC through Androcoll™-E does not adversely affect the capacitation-like status of stallion spermatozoa, although it did increase with time during cold storage.

© 2010 Blackwell Verlag GmbH.

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