Topic
Semen
About: Semen is a research topic. Over the lifetime, 14571 publications have been published within this topic receiving 407739 citations. The topic is also known as: come & ejaculate.
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TL;DR: The male bird appears to contribute more to heat stress infertility than the female, and egg fertility was decreased when hens were inseminated with semen from S males.
95 citations
TL;DR: It is demonstrated that in the authors' climatic conditions clear seasonal differences occur in semen quality of fresh and frozen-thawed semen and that cryopreservation of stallion semen should preferably be performed in autumn.
95 citations
TL;DR: The results showed that ethanol consumption disturbs sperm motility, nuclear maturity and DNA integrity of spermatozoa in rat, and this may be one possible cause of infertility following ethanol consumption.
95 citations
TL;DR: In this paper, bovine semen parameters and the best IVF conditions to produce a maximal percentage of blastocysts were analyzed with CASA and flow cytometry, and four types of semen were obtained from four Holstein bulls and two ejaculates from each bull were analyzed.
95 citations
TL;DR: Spermatozoa from pathological samples may have higher levels of polyunsaturated fatty acids, especially docosahexaenoic acid (DHA), than spermatozoA from normozoospermic men, therefore, damage induced by lipid peroxidation would be higher in spermatozosa from pathology samples than those from normal men.
Abstract: Introduction The lipid composition of the sperm membrane has a significant effect on the functional characteristics of spermatozoa. Patients and methods In the present study, fatty acid composition of spermatozoa and seminal plasma levels of free 15-F 2t -Isoprostane and catalase were assayed in men with normozoospermia, asthenozoospermia, asthenoteratozoospermia, and oligoasthenoteratozoospermia. Results In spermatozoa from asthenozoospermic men only oleic acid levels showed a significant difference from normozoospermic men. In spermatozoa from asthenoteratozoospermic and oligoasthenoteratozoospermic samples all of the tested fatty acids were significantly higher than those from normozoospermic samples. Seminal plasma levels of catalase were significantly lower in all patients while levels of free 15-F 2t -Isoprostane were significantly higher in all patients compared with normozoospermic men. Discussion Spermatozoa from pathological samples may have higher levels of polyunsaturated fatty acids, especially docosahexaenoic acid (DHA), than spermatozoa from normozoospermic men. Therefore, damage induced by lipid peroxidation would be higher in spermatozoa from pathological samples than those from normozoospermic men.
95 citations