Fertilizing Ability of Cock Spermatozoa from the Testis Epididymis and Vas Deferens Following lntramagnal Insemination1,2

Abstract

A reexamination of the fertilizing ability of cock spermatozoa from the testis, epididymis and vas deferens was accomplished through the use of intramagnal insemination. Intramagnal insemination of spermatozoa taken from the testes, epididymides and vas deferentia resulted in fertility levels of 85-90% during the first week and levels of 67-90% the second week after a single insemination. In contrast, vaginal insemination of testicular spermatozoa resulted in a total absence of fertile eggs. Vaginal and intramagnal insemination of ejaculated spermatozoa resulted in fertility levels of 70 and 71%, respectively, during the first week and levels of 42 and 53%, respectively, the second week after a single insemination. There were no significant differences in hatchability of fertile eggs from hens inseminated with semen from different regions of the male tract or by different routes of insemination.