This study aimed at assessing the sperm quality of the Amazon catfish, Leiarius marmoratus ¸ after refrigeration without extenders. After capturing the animals and stripping of semen, the following parameters were analyzed: progressive motility, motility quality score, duration of motility and sperm morphology. An aliquot of fresh semen from each male was kept at room temperature (28 ± 2°C) as ...

Semen quality is a key indicator of the male reproductive ability. The decline in semen quality has been debated for several decades. However, data on decline in semen quality might be inconsistent given factors such as geographical area, ethnicity, environmental exposure and lifestyle changes. This study aimed to provide information on the semen quality of men in Northern Taiwanese. We recruit...

The repeatability of the analysis of frozen thawed equine semen using a computer-assisted sperm analysis system is high. However, the settings used to analyze the semen samples influence the results to a large extent. Therefore, settings used in different studies should be described clearly, facilitating comparison of results. Authors’ address: Department of Reproduction, Obstetrics and Herd He...

BACKGROUND Standard semen analysis has low objectivity and reproducibility and is not closely related to fertility. We assess the prognostic value of automated measurements of sperm motility and morphology. METHODS During 1997-1999, 1191 infertile couples with no known absolute barrier to conception were assessed by conventional semen analysis, and automated measurements of average straight-l...

BACKGROUND Subfertility affects one in eight couples. In up to 50% of cases, the male partner has low semen quality. Four Y chromosome deletions, i.e. Azoospermia factor a (AZFa), P5/proximal-P1 (AZFb), P5/distal-P1 and AZFc deletions, are established causes of low semen quality. Whether a recently identified partial AZFc deletion, the gr/gr deletion, also causes low semen quality is at present...

background: while traditional semen parameters are of significant clinical value, total fertilization failure in ivf cycles is not uncommon. sperm function testing such as; hamster egg penetration test has severed limitations as a clinical test. the aim of this study was to evaluate the predictive value of semen parameters by using of intracellular calcium [ca2+]i increase in response to proges...

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...

Introduction. Semen analysis is considered as the surrogate marker for male fecundity while assessing infertile men. There are several reasons for altered semen quality and bacteriospermia could be one among them. Thereby the aim of our work is to study the semen culture and its impact on semen parameters among infertile men. Materials and Methods. Semen samples were collected from men attendin...

BACKGROUND The influence of an accompanying person (parent, guardian or nurse) on the ability of an adolescent (post-pubescent, <20 years of age) to produce a semen sample for cryopreservation, is undetermined, as is the potential for use of urine samples to retrieve sperm in those adolescents that are unable to produce a semen sample. METHODS The records from 1991-2000 inclusive were reviewe...

Purpose: To evaluate the drop-to-drop and pellet-to-pellet repeatability and stability of frozen sperm pellets. Methods: Ten pellets were thawed per batch (low and normal concentration) and evaluated by two investigators to establish a quality control chart. Then low and normal concentration pellets were thawed and evaluated daily for 10 days by both investigators. The values for both investiga...