Five Chios and five Friesian rams were used to study the effect of season on semen production. Semen samples were collected with an artificial vagina. In spite of the large variation of most of the semen characteristics among rams of the two breeds, seasonal variation in semen quantity (volume, concentration and total number of spermatozoa per ejaculate) and quality (percentage of motile sperma...

BACKGROUND: To investigate the relationship of human semen parameters with season, age and smoking status. METHODS: The present study used data from subjects recruited into an ongoing cross-sectional study on the relationship between environmental agents and semen characteristics. Our population consisted of 306 patients who presented to the Vincent Memorial Andrology Laboratory of Massachusett...

Hypercholesterolemia represents a high risk factor for frequent diseases and it has also been associated with poor semen quality that may lead to male infertility. The aim of this study was to analyze semen and sperm function in diet-induced hypercholesterolemic rabbits. Twelve adult White New Zealand male rabbits were fed ad libitum a control diet or a diet supplemented with 0.05% cholesterol....

INTRODUCTION Emotional stress connected with work or, for example, depressive reaction to infertility, is one of frequent causes of decreased quality of semen. An objective examination of this factor is difficult because stress depends also on patient's emotionality. One of the ways to study this problem is evaluating the relation between ACTH level and selected semen parameters. MATERIAL AND...

The effect of subcutaneous injections of vitamin C on the seminal characteristics of Markhoz bucks (2–4-year-old) was studied. The bucks, trained to serve an artificial vagina, were randomly allotted into three equal groups (n = 4) and received daily either zero (1 mL normal saline; control group), or 20 (VitC20 group) or 40 (VitC40 group) mg per kg body weight vitamin C from July 06, 2006 to O...

BACKGROUND Chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) is one of the risk factors of impaired male fertility potential. Studies have investigated the effect of CP/CPPS on several semen parameters but have shown inconsistent results. Hence, we performed a systematic literature review and meta-analysis to assess the association between CP/CPPS and basic semen parameters in adult me...

background: leptin is a polypeptide hormone secreted by white adipose tissue in proportion to body energy. although the participation of leptin in female reproduction is well established any role in male reproductive function is at best tenuous. objective: the objective of this study was to compare the leptin concentration in human seminal plasma and then the relationships between seminal lepti...

Ten mature rams were paired on the basis of pre-treatment semen production and assigned randomly to one of two treatments. Treatments were bilateral intraepididymal injections of 3 ml of 50% (w/v) CaCI2 in .9% NaC1 (w/v) or 3 ml .9% NaCI. Semen was collected twice weekly for 5 weeks prior to treatment and for 7 weeks following treatment. Mounting times, ejaculate volume and sperm concentration ...