The male part of fertility traits in pigs has not often been analysed because of missing semen quality data in the case of natural mating. With increasing AI in pigs more data about semen quality of boars is available, so its influence on litter size can be analysed on bigger data sets. With advanced recording systems, single matings are recorded and important economic traits like mating succes...

background: sperm selection is generally used to describe methods for separation of spermatozoa for in-vitro-assisted reproduction. few studies reported relation in vivo fertility and semen parameters after selection of fertile spermatozoa; hence, our research attempt to assess different semen parameters after post-thaw (pt) or after selecting sperm sample (ssp), using density gradient separati...

Background: The aim of present study was to estimate the levels of some Trace element (Lead, Copper, Cobalt, Chromium, and Cademium) concentrations in Asthenospermia and Normospermia by atomic absorption method, in comparison with control (Fertile), Estimate concentration of (MDA) Malondialdehyde and Total protein concentration in semen specimens.Also relationships between mentioned components ...

OBJECTIVES To determine the efficacy of varicocelectomy in improving semen parameters. METHODS A meta-analysis was performed to evaluate both randomized controlled trials and observational studies using a new scoring system. This scoring system was developed to adjust and quantify for various potential sources of bias, including selection bias, follow-up bias, confounding bias, information or...

OBJECTIVES To evaluate the incidence of functional and chromatin alterations on spermatozoids in patients grouped according to normality of standard semen parameters based on the 5th edition of the World Health Organization (WHO) guidelines. To identify and correlate the most frequently altered characteristics in the normal standard semen parameters sub-population. MATERIALS AND METHODS A pro...

Background: One of the most conventional causes of male infertility is increasing age, which has significant effects on sperm physiology. In advanced ages, degenerative alterations in germinal epithelium, decreased number of Leydig cells, and their functions affect spermatogenesis through a decrease in testosterone level. So it is important to know whether advanced paternal age is associated wi...

background: while traditional semen parameters are of significant clinical value, total fertilization failure in ivf cycles is not uncommon. sperm function testing such as; hamster egg penetration test has severed limitations as a clinical test. the aim of this study was to evaluate the predictive value of semen parameters by using of intracellular calcium [ca2+]i increase in response to proges...

The World Health Organization (WHO) has extensively revised its manual for semen analysis, and seeks to provide reference limits for semen quality parameters. This raises the question of what is meant by 'normal' (excluding the use of this term to denote a Gaussian distribution). It could be taken in a purely statistical sense, using a biologically arbitrary cut-off point to denote an abnormal ...

PURPOSE Semen parameters and sperm DNA were evaluated in patients receiving selective serotonin reuptake inhibitors. MATERIALS AND METHODS Semen samples were obtained from 74 fertile, depressed men treated with selective serotonin reuptake inhibitors (group 1) and 44 healthy fertile volunteers who served as a control (group 2). Two semen analyses and physical examinations were completed in al...

BACKGROUND Semen analysis is the cornerstone in the evaluation of male (in)fertility. However, there are men with normal semen tests but with impaired fertilizing ability, as well as fertile men with poor sperm characteristics. Thus, there is rising interest to find novel parameters that will help to predict and define the functional capacity of spermatozoa. METHODS We examined whether there ...