Cryopreservation of epididymal sperm is an effective technique to preserve genetic materials of domestic cats and wild felids when they unexpectedly die. However, this technique inevitably causes detrimental changes of cryopreserved-thawed spermatozoa, for example, by physical damage and excessive oxidative stress. L-carnitine is an antioxidant that has been used to improve sperm motility in hu...

In this study, sperm characteristics (motility parameters and ionic composition of seminal plasma) and effect of ions on motility (duration of motility of sperm and percentage of motile spermatozoa) and fertilization capacity (fertilization rate, hatching rate, survival rate and larvae length) were investigated in Ctenopharyngdon idella. The longest duration of motility obtained in solution con...

In this study, sperm characteristics (motility parameters and ionic composition of seminal plasma) and effect of ions on motility (duration of motility of sperm and percentage of motile spermatozoa) and fertilization capacity (fertilization rate, hatching rate, survival rate and larvae length) were investigated in Ctenopharyngdon idella. The longest duration of motility obtained in solution con...

Testicular fine needle aspiration cytology (FNAC) is widely being used in humans to evaluate the functional testicular mechanism, but its application is very limited in animals especially breeding bulls. This preliminary study was conducted to assess the effect of testicular fine needle aspiration (FNA) technique on testicular biometry and seminal characteristics in Karan Fries crossbred bulls....

Background: The study aimed to evaluate the impact of Calligonum extract and US radiation on sperm parametersof cryopreserved human semen samples.Materials and Methods: In this experimental study, twenty-five semen specimens were obtained from healthy semendonors and incubated in human tubal fluid (HTF) medium supplemented with 10% human serum albumin (HSA) for45 minutes...

The cholesterol content of the sperm membrane is regulated during both maturation in the epididymis and capacitation in the female tract, two processes required for the spermatozoa to acquire their fertilising ability. Because Niemann-Pick disease, type C2 (NPC2) protein is one of the most abundant components of the epididymal fluid and contains a functional cholesterol-binding site that can tr...

AbADjievA, D., M. Chervenkov, r. StefAnov, n. MetoDiev, e. kiStAnovA, D. kAChevA and e. rAyChevA, 2014. effect of breeding season on the kinematic parameters and morphology of ram’ sperm from synthetic population bulgarian milk sheep breed. Bulg. J. Agric. Sci., 20: 967-972 the aim of this study was the investigation of the breeding season effect on the kinematic and main spermatological parame...

Sperm quality in insemination doses is known to affect pregnancy rates following artificial insemination (AI) in a number of animal species. Furthermore, biotechnologies such as in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) require the spermatozoa to be removed from seminal plasma, which contains inhibitory substances, cellular debris and even pathogens. Several metho...

BACKGROUND The vitamin D receptor (VDR) is expressed in human spermatozoa, and VDR-knockout mice and vitamin D (VD) deficiency in rodents results in impaired fertility, low sperm counts and a low number of motile spermatozoa. We investigated the role of activated VD (1,25(OH)(2)D(3)) in human spermatozoa and whether VD serum levels are associated with semen quality. METHODS Cross-sectional as...

Electronic devices and the Internet have changed the way people interact with each other. Be it via lap-top computers with Wireless LAN, mobile phones or smartphones, nowadays everybody seems to be electronically connected to everybody all the time. These changes have brought about an enormous increase in everyday exposure to radio waves. Concerns have been raised that radiofrequency energy mig...