Effect Of Cold Shock On Frozen-Thawed Spermatozoa Of Buffalo & Cow Bulls
By: Syed Amer Mahmood
| Prof. Dr. Ijaz Ahmed.
Contributor(s): Dr.Azhar | Dr.Muhammed Amir Saeed | Faculty of Veterinary Sciences.
Material type: 
BookPublisher: 2005Subject(s): Department of TheriogenologyDDC classification: 0910,T Dissertation note: Effect of cold-shock on frozen-thawed bovine spermatozoa was measured in terms of motility, viability, plasma membrane and acrosome . integrity. Single ejaculates each from seven Nili-Ravi buffalo bulls and 7 Sahiwal cow bulls were processed for freezing. Three straws of 0.5ml (for each parameter) from each bull were thawed and pooled at 3rC before and after cold-shock at 4°C for 2 min. Individual motility was observed by phase contrast microscope before and after cold-shock. Before and after cold-shock, sperm viability, plasma membrane and acrosome integrity were evaluated by supravital stain, hypo osmotic swelling test and normal acrosomal reaction, respectively. Two hundred sperm were counted for each parameter before and after cold-shock. Comparison of before and after cold shock values showed that cold shock had no effect (P>0.05) on motility (64.0±1.88 vs 60.4±2.56), viability (141.1±4.39 vs 124.5±8.03), plasma membrane integrity (83.51±5.82 vs 71.19±4.31) and acrosome integrity (148.3±2.36 vs 141.1 ±2.85) of buffalo bull spermatozoa. Comparison of before and after cold shock values of cow bull spermatozoa indicated that cold shock had significant (P<0.05) effect on motility (59.2±1.05 vs 41.9±.12), viability (140: 14±2.94 vs 90.5±2.73), and plasma membrane integrity (62.3±4.28 vs 47.24±3.71) but no effect on acrosome integrity (147.9±2.21 vs 140.6±2.40). In conclusion, cold shock had significant detrimental effect on cattle bull spermatozoa but no effect on buffalo bull spermatozoa.
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Thesis
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UVAS Library Thesis Section | Veterinary Science | 0910,T (Browse shelf) | Available | 0910,T |
Effect of cold-shock on frozen-thawed bovine spermatozoa was measured in terms of motility, viability, plasma membrane and acrosome . integrity. Single ejaculates each from seven Nili-Ravi buffalo bulls and 7 Sahiwal cow bulls were processed for freezing. Three straws of 0.5ml (for each parameter) from each bull were thawed and pooled at 3rC before and after cold-shock at 4°C for 2 min. Individual motility was observed by phase contrast microscope before and after cold-shock. Before and after cold-shock, sperm viability, plasma membrane and acrosome integrity were evaluated by supravital stain, hypo osmotic swelling test and normal acrosomal reaction, respectively. Two hundred sperm were counted for each parameter before and after cold-shock. Comparison of before and after cold shock values showed that cold shock had no effect (P>0.05) on motility (64.0±1.88 vs 60.4±2.56), viability (141.1±4.39 vs 124.5±8.03), plasma membrane integrity (83.51±5.82 vs 71.19±4.31) and acrosome integrity (148.3±2.36 vs 141.1 ±2.85) of buffalo bull spermatozoa. Comparison of before and after cold shock values of cow bull spermatozoa indicated that cold shock had significant (P<0.05) effect on motility (59.2±1.05 vs 41.9±.12), viability (140: 14±2.94 vs 90.5±2.73), and plasma membrane integrity (62.3±4.28 vs 47.24±3.71) but no effect on acrosome integrity (147.9±2.21 vs 140.6±2.40). In conclusion, cold shock had significant detrimental effect on cattle bull spermatozoa but no effect on buffalo bull spermatozoa.
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