[Effect of glucose and insulin on sheep fertility]

Tested was the effect of glucose and insulin given in various doses to a total of 372 ewes at the time of artificial insemination of the animals' conception rate. Glucose was administered per os at the rate of 50 to 150 g, once to three times at 50 g, and insulin--via the parenteral route at rates of from 80 up to 160 IU, once or twice at 80 IU, every eight hours from the beginning of estrus. It was found that the oral application of glucose during insemination raised the level of blood sugar in the second half of the estrus cycle by 20.50 to 23.30 per cent, and the rate of conception--by 10.00 to 12.56 per cent more as against the values of these indices in the control animals. The optimal dose proved to be 100 g divided in two portions and administered at an eight-hpur interval. Insulin, injected twice at an 8-hour interval at a dose of 80 IU each time at the time of insemination lowered the level of blood sugar by 25.9 per cent, and the conception rate--by 80.40 per cent as compared with the controls.