The cervix is long and tortuous. Insemination is normally performed just into the posterior folds of the cervix. Most of the sperm is subsequently lost in the sow tract. Ideally, we wish to place the spermatozoa where they can be most effective, meaning near the uterotubal junction. In practice, this is not easily achievable so a compromise is required: placing the semen through the cervix into the uterus.
Using PCAI protocol has many advantages.
For boars studs, the main advantages are:
There are also a lot of advantages for sow/gilt management: