The extent and nature of prenatal losses up to 20 days post-coitum were examined in three groups of ewes joined at intervals over the period September to December at at a time when ambient temperatures were high (>35”C). Fertilization rates ranged from 72.7 per cent to 80.4 per cent whilst the proportions of abnormal ova noted were similar to those recorded from more temperate areas of Australi...

Phytoremediation offers an ecologically and economically attractive remediation technique for soils contaminated with polycyclic aromatic hydrocarbons (PAHs). In addition to the choice of plant species, agronomic practices may affect the efficiency of PAH phytoremediation. Inorganic nutrient amendments may stimulate plant and microbial growth, and clipping aboveground biomass might stimulate ro...

A 2 x 2 nutrient and water factorial experiment with four replications was installed in an 8-yr-old stand of Ioblolly pine (Pinus taeda L.) growing on an infertile, excessively drained sandy site in Scotland County, North Carolina. After the fourth year of treatment, estimated stem volume increment, total biomass production, and peak leaf area index (LAI) increased 152%, 99%, and 101%, respecti...

Mammalian reproduction is one of the most complex and fascinating biological phenomenon, which aims to transfer maternal and paternal genetic material to the next generation. At the end of oogenesis and spermatogenesis, both haploid gametes contain a single set of chromosomes ready to form the zygote, the first cell of the newly developing individual. The mature oocyte and spermatozoa remain in...

s:1858:"Background: Infertility is defined as inability in pregnancy after one year of regular intercourse without using contraceptive methods. Approximately15-10% of couples in childbearing appears infertile. It is the cause of infertility in men and women and infertility treatment depends on type of failure and is one of the methods of treating infertility in vitro fertilization. This researc...

The case of a couple with a history of long standing primary infertility is reported in which the man presented with a decapitated sperm defect. The woman had a normal history and presented with normal clinical characteristics. The couple underwent one unsuccessful conventional in-vitro fertilization (IVF). Subsequently, embryos were obtained and transferred after assisted fertilization attempt...

BACKGROUND During in vitro fertilization (IVF), fertility patients are expected to self-administer many injections as part of this treatment. While newer medications have been developed to substantially reduce the number of these injections, such agents are typically much more expensive. Considering these differences in both cost and number of injections, this study compared patient preferences...

BACKGROUND The aim of the study was to investigate the effect of psychological stress before and during IVF treatment on the outcome of IVF, controlling for known physiological predictors. METHODS This is a prospective, longitudinal study. A total of 166 women were studied during their first IVF treatment. They answered questionnaires concerning psychological and social factors on two occasio...

OBJECTIVE To estimate whether alcohol use at the initiation of an in vitro fertilization (IVF) cycle is associated with IVF outcomes. METHODS In this prospective cohort study, men and women completed a self-administered questionnaire before their first IVF cycle. Participants reported alcohol type, amount, and frequency consumed. Discrete survival analysis was applied to calculate the odds ra...