The motility, deformity and fertility of the frozen semen which were diluted 1 to 3 with a non-yolk 5.7% glucose solution and the previous diluent containing 7% glycerol in its final concentration were compared mutually. The results are as follows:
The motility and the deformity percent of thawed semen treated by a non-yolk glucose solution was 85.6 ± 8.0 percent and 8.4 ± 2.0 percent on the average. The Motility was higher and the deformed sperm average lower than those in the previous diluent. The fertility of semen diluted by the present new diluent were 74.0 and 55.9 percent in the first and second week respectively. These were fairly higher than those in the previous diluent.