If you can't be of help to this persons post, DON'T FREAKING BOTHER TO POST and waste our time wading through your Sh*t to get to the bottom of it, to ensure we aren't repeating.
To the initial poster, as mentioned before anywhere from 95-98% of men with CF CANNOT have children naturally, but many still do father biological children through medical procedures.
YES, a small amount of ejaculate is somewhat an indication of no sperm in your ejaculation but as stated before by S, it is NOT conclusive and it would be wise to have a semen analysis. Surprisingly, most insurance companies cover this laboratory test and many primary care doctors and CF centers routinely.
To answer your other question about volume, the prostate produces the seminal fluid, but the testicles produce the sperm, which is about 50-75% of the ejaculatory fluid and the two fluids travel to the ejaculation point from two different tubes and then "meet up" You can still have ejaculatory fluid if you have an absence of the vas deferens, but you will not have sperm.
Don't loose hope about this matter though, it can be very discouraging but if it is your desire someday, you CAN become a father. After 6 years of hoping and dreaming of becoming parents, my husband and I just went through in vitro and we are expecting babies in October of this year.
If you have any questions, feel free to email him at <a target=_blank class=ftalternatingbarlinklarge href="mailto:division902@hotmail.com">division902@hotmail.com</a>