Computer assisted semen analysis for quantification of motion characteristics of bull sperm during cryopreservation cycle

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Abstract

Aim: The study was undertaken to quantify and to analyze the changes in the motion characteristics of bull spermatozoa during various stages of cryopreservation cycle. Materials and Methods: Using computer assisted semen analysis (CASA) technique, 26 ejaculates, collected from two Jersey bulls were analyzed for motility, head behaviour and swimming pattern of spermatozoa on dilution, pre-freeze and post-thaw stages of cryopreservation. French straw technique was employed for deep-freezing of semen using liquid nitrogen. O Results: Equilibration of diluted semen at 5 C has significantly (P< 0.01) reduced sperm motility, progressive motility, path velocity, and progressive velocity. Beat cross frequency was also affected significantly (P<0.05) by equilibration. Freezing and thawing processes drastically affected all the motility, velocity and head behaviour characteristics (P< 0.01). Conclusion: CASA facilitate objective evaluation sperm motion characteristics. Adoption of CASA technique has the potential for improvements in evaluation of semen thereby the quality of frozen semen for fertility can be enhanced.

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Sundararaman, M. N., Kalatharan, J., & Jawahar, K. T. P. (2012). Computer assisted semen analysis for quantification of motion characteristics of bull sperm during cryopreservation cycle. Veterinary World, 5(12), 723–726. https://doi.org/10.5455/vetworld.2012.723-726

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