Sheep Semen Characteristics and Artificial Insemination by Laparoscopy

The semen characteristics and technology using the method of direct injection of the semen to the uterus by laparoscopy were examined to improve the conception rate in sheep. Fifty-two sheep in total were examined which were raised at the Faculty of Agriculture and Kawatabi Experimental Station of Tohoku University. The semen characteristic was better in the breeding season than in the other seasons based on the semen volume, number of spermatozoa and the spermatozoa movement index. The method of direct injection of the semen to the uterus by laparoscopy produced a much better conception rate in sheep than the generally done vaginal insemination, and the cervical insemination. In addition, the new uterine insemination via the vagina was evaluated.sheepsemenartificial inseminationlaparoscop