BACKGROUND Organophosphates are broad class of chemicals widely used as pesticides throughout the world. We performed a cross-sectional study of associations between dialkylphosphate metabolites of organophosphates and semen quality among pesticide applicators in Majes (Arequipa), Peru. METHODS Thirty-one men exposed to organophosphate (OP) pesticides and 31 non-exposed were recruited (age, 2...

The large bloom-forming flagellate Gonyostomum semen has been hypothesized to be inedible to naturally occurring zooplankton due to its large cell size and ejection of long slimy threads (trichocysts) induced by physical stimulation. In a grazing experiment using radiolabelled algae and zooplankton collected from lakes with recurring blooms of G. semen and lakes that rarely experience blooms, w...

Horizontal attenuation total reflection Fourier transformation infrared spectroscopy (HATR-FT-IR) studies on cuscutae semen and its confusable varieties Japanese dodder and sinapis semen combined with discrete wavelet transformation (DWT) and radial basis function (RBF) neural networks have been conducted in order to classify them. DWT is used to decompose the FT-IRs of cuscutae semen, Japanese...

Campylobacter is one of the most commonly reported bacterial causes of human foodborne infections in the United States. Recent evidence has demonstrated that Campylobacter is present in poultry semen and may contribute to the vertical transmission between the breeder hen and offspring. As Campylobacter is considered sensitive to oxygen and cold temperature, the objective of this study was to de...

Bangladesh possesses a tropical goat breed popularly known as Black Bengal goat. They are dwarf in size and noted to be famous for their adaptability, fertility, prolificacy, delicacy of meat and superior skin quality (Husain et al. 1996). It is well adapted to hot and humid climate and usually produces twins and triplets. However, it has been observed that there exists sizeable genetic variati...

OBJECTIVE To examine the relationship among sperm apoptosis, sperm chromatin status, and DNA ploidy in different sperm fractions. DESIGN Prospective study. SETTING Reproductive research center in a tertiary care hospital. INTERVENTION(S) Sperm prepared by density gradient were evaluated for sperm count, motility, apoptosis, and sperm chromatin assessment. MAIN OUTCOME MEASURE(S) Sperm c...

Supraphysiological ROS levels can lead to apoptosis, lipid peroxidation, and DNA protein damage. This pilot study aimed investigate the sperm oxidative damage in subfertile men, describe relationship between antioxidant system ROS. Sixty-four semen samples were categorised according evaluated routine parameters (WHO, WHO laboratory manual for examination processing of human semen, 2010). Result...

Objective: To assess the seminal characteristics of multiple ejaculates collected sequentially via masturbation or at intercourse using a semen collection device (Male Factor PakTM; MFPTM). Design: Three ejaculates were collected by patients over a 3 day period (1 semen specimen/day) via masturbation or at intercourse by using the MFPTM. Semen specimens were assessed for volume (ml), sperm coun...

Artificial insemination via cooled or frozen-shipped semen allows more mares to be bred to a single stallion, but not all stallions produce semen capable of withstanding the cooling and freezing procedures. Aurich et al. (1996) estimated that cooled or frozen-shipped semen achieves < 75% of the pregnancy rates achieved with fresh semen. Some factors affecting the fertility rates of thawed semen...

AIM The objective of this research is to report parameters for breeding soundness evaluation, semen extension, and cryopreservation in Rusa timorensis. MATERIALS AND METHODS Seven healthy stags were chosen for semen collection using an electroejaculator. The collections were performed twice in a breeding season between February and June 2016. Samples were collected between 2 and 3 weeks inter...