The reported value (45%) for male infertility is high, which is compared and discussed with that of authors from worldwide.

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World over, male infertility is on rise. Several causes for infertility are known. Semen examination report is an important document, of which total sperm count and percentage of sperm motility are very well considered for understanding the status of fertility. Several factors affecting these parameters are discussed by different groups of workers. Abstinence maintained prior to semen collection differed among different studies. Abstinence may have an influence on semen parameters. Several reports show submission of sample is done after random collection. If collection is done after number of days of abstinence the semen will be poor in quality. It is known that sperms are damaged if they remain more number of days in male system prior to its release. As spermatogenesis is a continuous process, number of sperms will be more in testes if not released out. Percentage of sperm motility in such samples will be poor. Similarly the quality of semen of daily collected is likely to be poor where sperms are less in number. Considering the said facts we have opted to find out if any variation in semen takes place if abstinence period is strictly maintained. In the present study, a total number of thirty five young healthy men supplied semen samples on three different occasions at a fixed time after maintaining abstinence for a fixed period of five days. The time of collection of semen is also an important factor as semen collected at different timings of the day after maintaining same fixed number of days of abstinence showed significant difference in values. Knowing seasonal changes lead to difference in parameters of semen, we completed the present study in one season. Our results on all parameters showed change in values in all three samples, collected on three different days but they were statistically insignificant. Our study favors collection of sample after fixed number of five days of abstinence.

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Introduction: World over studies are being done by different group of workers to understand the time of deliveries conducted. Surprisingly majority of deliveries were following a pattern, seasonally. Today in this busy world, couples choose comparatively a free time for delivery and preparation for conception is done accordingly. Apart from these, it is clearly shown majority of deliveries are conducted during a particular season. We hypothesised that the change in semen quality during different seasons is responsible for this phenomenon. Materials and methods: Present study conducted on semen quality included 12,408 semen samples collected from different laboratories of Bangalore city during 8 years (2000–2007) period of time and were analysed season wise. Results: Results showed sperm concentration was significantly lower in monsoon than in winter season. Humidity and pressure influenced sperm count. Forward moving sperms were influenced by temperature and pressure. Summary: The study concludes the change in birth rates seen during different season in a year is due to the quality of semen responsible for conception.