Seminal analysis in fertile and infertile Nigerian men.

Semen quality was estimated in 53 males of proven fertility and 370 males in infertile marriages. The mean sperm count for the fertile males and males in the infertile population was 71.2 million/ml and 46.8 million/ml, respectively. In the series, 49.1 percent of the infertile males had pathological spermograms. There is need for epidemiological studies to identify the causative factors and in cases in which therapeutic recovery cannot be achieved, artificial insemination should be encouraged.