Chicken seminal plasma contains a high content of sex steroids including progesterone (P4). According to a published study, in vitro supplementation of P4 to the semen resulted in decreased fertility in the White Leghorn chicken; however, it is not known if increased P4 production in vivo is associated with decreased sperm fertility. Therefore, the aim of the present experiment was to study the...

The objective of this study was to test the effect of four different diluents on the motility of goat semen stored at room and refrigerator temperatures. To achieve this objective, four West African dwarf bucks aged 10-12 months were ejaculated weekly for five weeks using the electro-ejaculator method. The ejaculated semen were extended using four diluents namely sodium citrate (T1), sodium bic...

BACKGROUND/AIM The question of whether body mass index (BMI) affects semen quality and male fertility is controversial. The purpose of this research was to determine whether there is a correlation between BMI and semen analysis parameters. MATERIALS AND METHODS A total of 617 male infertility patients were recruited and separated into 3 groups according to BMI values as follows: normal weight...

Objective The main purpose of this study is to evaluate the effects of varicocelectomy on serum testosterone levels and semen quality in infertile men who suffer from varicocele. MaterialsAndMethods This prospective study enrolled 115 subjects with clinical varicocele grades II and III and 240 fertile men as the control group. Total volume of testosterone serum level (ng/dl) and semen quality w...

Collecting baseline information on how laboratories perform testing is a reasonable first step towards establishing intra- and inter-laboratory standardization and quality control for semen analysis. We carried out a survey of the laboratories performing the testing in Mainland China. A questionnaire, composed of 36 questions covering all aspects of semen analysis, was designed, and a copy was ...

INTRODUCTION Studies that compare the impact of different infectious entities of the male reproductive tract (MRT) on the male accessory gland function are controversial. MATERIALS AND METHODS Semen analyses of 71 patients with proven infections of the MRT were compared with the results of 40 healthy non-infected volunteers. Patients were divided into 3 groups according to their diagnosis: ch...

The preservation of spermatozoa is an important tool used in conservation programs to increase the genetic diversity of threatened and endangered species. Although routinely used to manage conservation programs for higher vertebrates, there have been limited attempts to establish reproductive assistance programs for tortoises. The purpose of this study was to develop a model for collecting and ...

Ejaculation was pharmacologically induced in a 13-year-old Quarter Horse stallion with a spiral fracture of the radius. The owners desired to have semen from the stallion frozen prior to euthanatizing the horse, but because of the debilitating injury, standard methods of semen collection could not be used. With the stallion standing quietly in a stall, a plastic collection bag was positioned ov...

Twelve Yorkshire boars were randomly assigned to one of two temperature controlled chambers to determine the influence of elevated ambient temperature on reproductive performance. Heat stressed boars were exposed to 34.5 -+ 1.0 C for 8 hr and 31.0 + 1.0 C for 16 hr daily for 90 days. Control boars were maintained at 23.0 -+ 1.0 C throughout the experimental period. Semen was collected twice wee...

A few studies indicate that exposure to maternal smoking during fetal life decreases semen quality in adult life, but the results are inconsistent and retrospectively collected smoking data were used in most studies. From a Danish pregnancy cohort established in 1984–1987, 347 of 5,109 sons were selected according to their exposure to tobacco smoke in fetal life. From February 2005 to January 2...