OBJECTIVES Possible relationship between semen quality (semen volume, sperm concentration and sperm motility) and parabens exposure was investigated in male partners of couples who visited a gynecology clinic in Tokyo for infertility consultation (n = 42, 36.8 ± 5.4 years). METHODS Semen parameters were measured according to WHO guideline at the clinic, and urinary methyl- (MP), ethyl- (EP), ...

Collection frequencies and certain characteristics of Peregrine Falcon (Falco peregrinus) semen were investigated using semen from a falcon trained to copulate on a specially designed hat. Semen volume increased significantly when collections were increased from two to three times/day, but cells/ejaculate decreased. No significant difference in number cells/ejaculate or cells/microliter was det...

BACKGROUND The role of seminal colonization of Ureaplasma urealyticum in varicocele-related infertility was investigated. METHODOLOGY Semen samples were obtained from infertile patients with or without varicocele and healthy controls and were subjected to routine semen analysis and PCR. DNA was extracted by Cadieux method and analyzed by PCR protocol with species-specific primers for U. ureal...

A few studies have found poor semen quality in sons whose mothers have received fertility treatment, but it is unknown whether the poor semen quality is related to the infertility treatment or to infertility per se, for example, whether it is caused by hereditable factors. Using data from a population-based, Danish follow-up study conducted in 2005–2006, the authors of the present study examine...

Standardized sperm concentration and volume:volume extension were compared as dilution rates for canine semen freezing. Six proven stud dogs were submitted to two seminal collections by manual stimulation. Semen was evaluated and extended in tris plus egg-yolk and glycerol according to two different dilution rates. The first one was based on a standardized sperm concentration of 200x10 spermato...

In order to determine calcium (Ca), magnesium (Mg) content and total antioxidant capacity (TAC) of seminal plasma in buffalo and to study their associations with the semen characteristics, 54 semen samples were collected from 10 buffalo bulls; semen quality was evaluated, seminal plasma was then harvested by centrifugation and its Ca and Mg content were estimated and its TAC determined. The Ca ...

BACKGROUND Large studies on semen quality of the general healthy population from China are rare. METHODS A cross-sectional study was performed to evaluate the semen quality of 1346 healthy men residing in Chongqing area of southwest China in 2007. The semen parameters were measured and compared with the World Health Organization (WHO) criteria. A linear regression model was used to examine th...

VII-VIII List of abbreviations XIV List of tables XVI List of figures XVIII List of appendices XXVI 1 2 2.1 2.1.1 2.1.1.1 2.1.1.2 2.1.1.3 2.1.1.4 2.1.1.5 2.1.1.6 2.1.1.7 2.1.2 2.1.2.1 2.1.2.2 2.2 2.2.1 2.2.2 2.3 2.4 2.4.1 2.4.1.1 2.4.1.2 2.4.2 2.4.3 Introduction Literature review Boar reproductivity Boar sperm quality traits Appearance of semen Sperm concentration Sperm motility Semen volume Pl...

OBJECTIVE To study the relationship between semen quality and pregnancy loss in a cohort of couples attempting to conceive. DESIGN Observational prospective cohort. SETTING Not applicable. PATIENT(S) Three hundred and forty-four couples with a singleton pregnancy observed daily through 7 postconception weeks of gestation. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) Association betwe...

background: to ascertain the effects of tropical leaf meals on semen production and semen quality. objective: this study was conducted with the main objective of investigating the effect of neem leaf meal on physiological responses of rabbit bucks fed graded levels of neem leaf (azadirachta indica a. juss) meal. materials and methods: the varying levels of neem leaf meal (nlm) in the different ...