A study on the influence of gastrointestinal trichostrongyles on ram fertility was performed. Two groups of semen donor rams (Sarda breed) were utilized; one was experimentally infected with Haemonchus contortus, Trichostrongylus colubriformis and Teladorsagia circumcincta and the other was used as a control group. In all animals, coprological, haematological and reproductive parameters were st...

Sperm DNA fragmentation is being increasingly recognized as an important cause of infertility. We herein describe the Sperm Chromatin Dispersion (SCD) test, a novel assay for sperm DNA fragmentation in semen. The SCD test is based on the principle that sperm with fragmented DNA fail to produce the characteristic halo of dispersed DNA loops that is observed in sperm with non-fragmented DNA, foll...

Background: Improved survival dramatically alters the consequences of adult co-morbidities in men with cystic fibrosis (CF) such as male infertility. Few studies have systematically addressed the impact of sexual and reproductive health issues in these men or considered the implications for healthcare delivery. Method: A descriptive cohort study was undertaken using a sexual and reproductive he...

AIM To examine the influence of ultraviolet C (UVC) radiation on blood, saliva, semen, and naked DNA samples for preventing DNA cross-contamination on working surfaces in laboratories. METHODS Blood, saliva, semen, and DNA isolated from buccal swab samples were obtained from a single male donor and applied to the laboratory working surfaces. UVC radiation was applied to these diluted and undi...

BACKGROUND Improved survival dramatically alters the consequences of adult co-morbidities in men with cystic fibrosis (CF) such as male infertility. Few studies have systematically addressed the impact of sexual and reproductive health issues in these men or considered the implications for healthcare delivery. METHOD A descriptive cohort study was undertaken using a sexual and reproductive he...

In birds, the primordial germ cell (PGC) lineage separates from the soma within 24 h following fertilization. Here we show that the endogenous population of about 200 PGCs from a single chicken embryo can be expanded one million fold in culture. When cultured PGCs are injected into a xenogeneic embryo at an equivalent stage of development, they colonize the testis. At sexual maturity, these don...

In vitro fertilisation after stimulation of the ovulatory cycle has led to successful pregnancy. If more oocytes are recovered than are needed they may be left unfertilised, preserved, or donated to a recipient couple from whom oocytes cannot be obtained. A case of human pregnancy initiated by transfer of a donated embryo fertilised in vitro is reported. The donor was a 42 year old woman with p...