Table 1. Composition of extenders used for semen cooling and freezing.
C-Ext I | C-Ext II | F-Ext I | F-Ext II | |
Trizma base | 3.025 g | 3.025 g | 3.025 g | 3.025 g |
Citric acid | 1.7 g | 1.7 g | 1.7 g | 1.7 g |
Fructose | 1.25 g | 1.25 g | 1.25 g | 1.25 g |
Streptomycin | 1 mg/ml | 1 mg/ml | 1 mg/ml | 1 mg/ml |
Penicillin | 1 mg/ml | 1 mg/ml | 1 mg/ml | 1 mg/ml |
Glycerol | 3% | – | 7% | 10% |
Equex STM Paste | – | – | 1% | 1% |
Egg yolk | 20% | 20% | 20% | 20% |
Milli-Q water | 77 ml | 80 ml | 72 ml | 69 ml |
pH | 6.76 | 6.72 | 6.70 | 6.76 |
Osmolarity | 870 mOsm | 335 mOsm | 1570 mOsm | 1978 mOsm |
Cooling extenders (C-Ext I and II)/freezing extenders (F-Ext I and II).