anus 200 and into the intestinal tract 205 of the animal the walls of the intestinal tract of the animal are thin and elastic allowing the breeder to feel and manipulate portions of the reproductive system through the wall of the intestines the reproductive system of livestock particularly a bovine consists of a vagina 140 which extends a distance into the animal to the internal reproductive bodies the vagina 140 extends to the cervix 144 in general the cervix is more narrow and rigid than the vagina the cervix has cervical rings 145 making passage through the cervix 144 difficult at the end of the vagina 140 there are blind pouches 147 where the vaginal body extends slightly past the opening to the cervix 144 often times the blind pouches can present an obstacle to the breeder in attempting to insert the artificial insemination gun into the cervix 144 at the end of the cervix is the uterine body 148 the rate of pregnancy is highest when sperm containing semen is injected as close as possible to the uterine body 148 fig8 is a cross sectional view of the apparatus of the present invention in the process of injecting semen near the uterine body 148 the coating 102 of the sheath 70 is ruptured through the application of pressure transferred from the manual force of the user on the plunger flange 50 to the seminal fluid in the semen straw the pressure on the coating 102 causes this surface to rupture allowing for the semen in the semen straw 63 to exit a skilled breeder can cause this to occur as close as possible to the uterine body 148 to ensure that the semen is properly dispensed the plunger should be depressed in a slow steady motion fig9 is.