ce +5 0 N, Gas =5 =i20°%C=¢ -180°C « -10 -80___L_J__L_j&4__ LIS o203 g3 5 minute’s Figure 1 Graph of Temperature Take-down. RESULTS On a research basis over the past two years, semen has been successfully frozen from pony, Arabian, Appaloosa, and Standard Bred stallions. This is based upon 50 to 70 percent recovery of post-frozen motile sperm and several pregnancies. One organization using a similar diluent has obtained 70 percent conception (non-returns) based upon approximately 2,000 first services. 1580