BACKGROUND Sperm DNA damage shows great promise as a biomarker of infertility. The study aim is to determine the usefulness of DNA fragmentation (DF), including modified bases (MB), to predict assisted reproduction treatment (ART) outcomes. METHODS DF in 360 couples (230 IVF and 130 ICSI) was measured by the alkaline Comet assay in semen and in sperm following density gradient centrifugation ...

BACKGROUND Perfluoroalkyl acids (PFAAs) are found globally in wildlife and humans and are suspected to act as endocrine disruptors. There are no previous reports of PFAA levels in adult men from Denmark or of a possible association between semen quality and PFAA exposure. OBJECTIVES We investigated possible associations between PFAAs and testicular function. We hypothesized that higher PFAA l...

Obtaining sexed sperm from previously frozen doses (reverse-sorted semen [RSS]) provides an important advantage because of the possibility of using the semen of bulls with desired genetic attributes that have died or have become infertile but from whom frozen semen is available. We report the efficiency of RSS on the pregnancy rate and birth rate of calves in a large-scale program using ovum pi...

Food waste is problematic on a number of levels; including the loss of a potentially valuable food source or resource for use in other processes; wasted resources and emissions in the food supply chain; and problems associated with the disposal of organic waste to landfill. We quantify the post-consumer food waste stream in South Africa, in order to bring attention to the magnitude of the probl...

The objectives were to determine the effects of insemination with sexed semen at spontaneous and induced estrus, fixed-time insemination at synchronized estrus, the deposition site, estrous intensity, housing, age, body weight, and bull on the pregnancy rate in Holstein heifers, and to compare the quality traits of sexed sperm with those of unsexed semen. The study was conducted on 3206 heifers...

conclusions sexual activity in last week of pregnancy might be associated with the onset of labor. therefore, in the absence of complications in term pregnancy, sexual activity can be considered as a natural way to prevent post term pregnancy. background pregnancy is one of the most critical periods in women's lives. sexual relationships change in this period. monitoring of uterine contractions...

background : we performed a prospective study to evaluate the effects of pelvic irradiation on fsh, lh and testosterone levels in male patients with rectal adenocarcinoma. our aim was to compare the level of male sex hormones in peripheral blood serum before and after pelvic irradiation. methods : the eligible participants were 40 men with rectal adenocarcinoma who underwent pelvic radiotherapy...