The aim of this study was to assess two models of sperm collection on the quality and fertility of thawed spermatozoa from Black Manchega rams, a threatened breed. Sperm samples were collected by electroejaculation and postmortem from each male. Samples were diluted with Biladyl and frozen. Motility (subjective and objective by means of computer-assisted semen analysis), membrane integrity, and...

Background Fertility disorder is a multifaceted physiopathological condition comprising men’s or women’s impotence in fertility or a combination of both. Men’s debility in fertilization is the main culprit in 40-50 percent of the studied cases. The first step in scrutinizing infertility is to analyze semen. So, the assessment hinges on analyzing factors like sperm density, total count and motil...

High fecundity, rapid generation time, and external development of optically clear embryos make the zebrafish (Danio rerio) a convenient vertebrate model for genetic, developmental, and disease studies. Efficient sperm cryopreservation enhances the zebrafish model system by optimizing productive use of facility space, extending the reproductive lifetime of males, providing an alternative to liv...

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...

Most of the general population is exposed to carbaryl and other contemporary-use insecticides at low levels. Studies of laboratory animals, in addition to limited human data, show an association between carbaryl exposure and decreased semen quality. In the present study we explored whether environmental exposures to 1-naphthol (1N), a metabolite of carbaryl and naphthalene, and 3,5,6-trichloro-...

OBJECTIVE To determine if strict morphology correlates with outcome parameters in couples undergoing intracytoplasmic sperm injection (ICSI). DESIGN Retrospective review. SETTING Academic nonprofit IVF center. PATIENT(S) Couples undergoing IVF/ICSI. INTERVENTION(S) In vitro fertilization and ICSI. MAIN OUTCOME MEASURE(S) Samples were evaluated for total sperm count, motlity, progressi...

The research work was conducted in District Artificial Insemination (AI) Center, Daulatpur, Khulna and Animal Biotechnology Laboratory, Khulna University, Khulna from July, 2010 to January, 2012. Semen was collected from 3 genetic groups of bulls from the AI center. Five frozen semen ampoules (1/4 Local x3/4 Friesian) was also used in this experiment. After collection, semen was observed to eva...

The aim of the present study was to determine seasonal variations in semen characteristics, testicular size, and plasma testosterone concentration in Iranian Khalkhali goats. An artificial vagina was used to collect semen from 10 bucks (2–4 years of age), from November 2013 to October 2014. Testicular circumference was higher (P<0.05) from September to October. Ejaculate volume, sperm ...

Sperm donation in China is different from that in other countries due to cultural, social and political factors. This research presents the current status of sperm donation in Mainland China and highlights some problems. Between January 2003 and December 2009, 19 471 sperm donors were screened totally and 6467 donors (33.2%) were recruited. The primary reasons for non-recruitment were either in...

Background Infertility and fertility decline are quite a conundrum for medicine, rampant among 10-15 percent of couples. In about 40 percent of cases, men are the main culprit. Since sperm production disorders are the focal cause of man infertility, insights into these disorders and taking action to ameliorate the situation is quite vital. The current study concentrates on infertility due to sp...