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ZOO-1848: Successful Cryopreservation of Sex Sorted Spermatozoa to Improve the Outcome of Breeding in Water Buffalo
Author(s)
S. Murtaza Hassan Andrabi Pakistan Agricultural Research Council, Islamabad, Pakistan
Muhammad Hammad Fayyaz Animal Reproduction and Genetics Program, Animal Sciences Institute, PARC-National Agricultural Research Centre, Islamabad 44000, Pakistan
M. Shafiq Haider Animal Reproduction and Genetics Program, Animal Sciences Institute, PARC-National Agricultural Research Centre, Islamabad 44000, Pakistan
Abstract
We investigated the cryopreservation protocol for sex sorted water buffalo spermatozoa. Sex-sorting of spermatozoa was carried out in three different techniques i.e. modified swim-up, paramagnetic nanoparticles and differential pH. After sorting, sperm cryopreservation was carried out. To optimize the sex sorted sperm cryopreservation technique, we tested three different cryodiluents. Briefly, the harvested sex-sorted spermatozoa were further divided into three parts and diluted in three different cryodiluents i.e. 1) tris-citric acid (TCA; Tris 3.0 g/100 mL, Citric acid 1.56 g/100 mL, Fructose 0.2 g/100 mL, Streptomycin sulfate 0.01 g/100 mL, fresh chicken egg yolk 20 mL, glycerol 7 mL, Distilled water 73 mL), 2) skimmed milk (SM; Skimmed milk 1 g/100 mL, Egg yolk 5 mL, Streptomycin sulfate 0.01 g/100 mL, Glycerol 7mL), and 3) commercial Triladyl® (TDL) to final concentration of 4 × 106 spermatozoa/ml respectively. Diluted samples were cooled to 4 oC in 120 min and equilibrated at 4oC for 4 hours, packaged in 0.54 mL French straws, frozen from initial holding at +4°C for 2 min, from +4°C to -20°C at 10 ºCmin-1, from -20°C to -100°C at 30°C min-1 and final holding for 1 min at -100°C with programmable freezer and stored in liquid nitrogen at -196oC. Post- thaw analysis was performed 24 hours after freezing. Wherein, the total motility (TM), progressive motility (PM), rapid velocity (RV) plasma membrane integrity (PMI), viability along with acrosomal integrity (VIA/IACR) of spermatozoa were determined. At postthawing, results of TM (78.55±2.02), PM (31.83±1.85), RV (34.00±3.49), PMI (60.12±2.92) and VIA/IACR (58.84±1.93) were significantly higher in TDL as compared to other groups. In conclusion, Triladyl® is the extender of choice for the cryopreservation of buffalo sexed spermatozoa.
Publication Details
Page(s) 215-215
DOI DOI not available
Published Journal: 4th International Conference of Sciences “Revamped Scientific Outlook of 21st Century, 2025” , November 12,2025, Volume: 1, Issue: 1, Year: 2025
Keywords
Cryopreservation Spermatozoa Artificial breeding Cryoinjuries Postthaw quality Skimmilk Triscirtric acid Sex sorting NUWater Buffalo Bubalus bubalis Cryodiluent Triladyl®
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