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  • Title: Incubation of post-thaw epididymal cat spermatozoa with seminal plasma.
    Author: Thuwanut P, Chatdarong K.
    Journal: Reprod Domest Anim; 2009 Jul; 44 Suppl 2():381-4. PubMed ID: 19754610.
    Abstract:
    In domestic cats, epididymal spermatozoa have lower initial motility and viability than ejaculated spermatozoa and it is possible that seminal plasma compounds are behind these effects. The aim of this study was to investigate whether co-incubation of post-thaw epididymal cat spermatozoa with seminal plasma was able to improve sperm quality. Epididymal cat spermatozoa from 11 cats were cryopreserved. After thawing, each sperm sample was divided into two aliquots, centrifuged and incubated with two different media; Tris buffer (control) or pooled seminal plasma (treatment). Sperm quality was observed at 0, 2, 4 and 6 h after incubation. The results demonstrated that all of the sperm parameters except acrosome integrity were lower in the treatment group compared to the control group (p < 0.05); the percentages of motility (46.4 +/- 15.4 vs 40.0 +/- 9.4), the scores of progressive motility (3.1 +/- 0.4 vs 2.8 +/- 0.5), the percentages of spermatozoa with intact plasma membrane (46.3 +/- 9.7 vs 39.6 +/- 8.9) and intact acrosome (36.5 +/- 16.2 vs 32.9 +/- 15.1), as well as at all time points. In conclusion, the seminal plasma seems less beneficial to the post-thaw epididymal cat spermatozoa than the Tris buffer.
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