نتایج جستجو برای: semen diluters

تعداد نتایج: 14043  

2008
JOHN HOOLIHAN WILLIAM BURNHAM

Collection frequencies and certain characteristics of Peregrine Falcon (Falco peregrinus) semen were investigated using semen from a falcon trained to copulate on a specially designed hat. Semen volume increased significantly when collections were increased from two to three times/day, but cells/ejaculate decreased. No significant difference in number cells/ejaculate or cells/microliter was det...

Journal: :Singapore medical journal 2007
D S Gaur M Talekar V P Pathak

INTRODUCTION Defective sperm quality is a significant cause of infertility. It is known that cigarette smoking affects semen quality. Our aim was to compare the semen of infertile cigarette smokers with infertile non-smokers to study the effect of smoking on semen quality. METHODS Semen samples of 100 cigarette smokers and 100 strictly non-smoking primary infertility patients were included in...

2013
Teruaki Iwamoto Shiari Nozawa Makiko Naka Mieno Katsunori Yamakawa Katsuyuki Baba Miki Yoshiike Mikio Namiki Eitetsu Koh Jiro Kanaya Akihiko Okuyama Kiyomi Matsumiya Akira Tsujimura Hiroshi Kanetake Jiro Eguchi Niels E Skakkebaek Matti Vierula Jorma Toppari Niels Jørgensen

OBJECTIVES To provide information of semen quality among normal young Japanese men and indicate the frequency of reduced semen quality. DESIGN Cross-sectional, coordinated studies of Japanese young men included from university areas. The men had to be 18-24 years, and both the man and his mother had to be born in Japan. Background information was obtained from questionnaires. Standardised and...

Journal: :AIDS research and human retroviruses 2001
S C Kalichman M Cage T Barnett P Tharnish D Rompa J Austin W Luke J O'Mowrey R F Schinazi

Risks for sexually transmitted HIV may be related to concentrations of virus detected in semen and previous research shows a small to moderate association between viral load in blood and semen. This study examined the association between viral load in semen and plasma in a community sample of HIV-infected men and is the first study to examine semen viral load in relation to sexual transmission ...

Journal: :Animal reproduction science 2000
G Sansone M J Nastri A Fabbrocini

Characteristics of buffalo semen, diluents used for liquid storage, aspects involved in freezing and thawing of semen are reviewed, and fertility results after artificial insemination (AI) with frozen-thawed semen are given.

Journal: :Journal of animal science 2014
J M Thomas S L Lock S E Poock M R Ellersieck M F Smith D J Patterson

This experiment was designed to test the hypothesis that delayed insemination of nonestrous cows would increase pregnancy rates when using sex-sorted semen in conjunction with fixed-time artificial insemination (FTAI). Estrus was synchronized for 656 suckled beef cows with the 7-d CO-Synch + controlled internal drug release (CIDR) protocol (100 μg GnRH + CIDR [1.38 g progesterone] on d 0, 25 mg...

Journal: :veterinary research forum 2012
saleh tabatabaei roozali batavani esmail ayen

the purpose of this study was to evaluate the probable effects of the vitamin e addition in different levels to the extender of chicken semen on spermatozoa quality during storage of semen at 4°c for 0, 3, 6, 10 and 24 hours. eight young ross broiler breeder strain 308 roosters were used in this experiment. the collected semen from all roosters was mixed together and diluted with modified a rin...

Journal: :medical journal of islamic republic of iran 0
heidar tavilani department of medical biochemistry, hamadan university of medical sciences, hamadan, mahmoud doosti department of medical biochemistry, faculty of medicine, tehran university of medical sciences hojatollah saeidi , the department of medical pathology, tehran university of medical sciences, tehran,سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) seyed mohammad hosseinipanah he department of anatomy, kashan university of medical sciences, kashan, i.r. iran. hasan hasani baferani he department of anatomy, kashan university of medical sciences, kashan, i.r. iran.

background: the lipid peroxides and their degradation products are highly toxic to spermatozoa and may play a major role in sperm dysfunction. the purpose of this study was to determine the level of lipid peroxidation as indicated by malondialdehyde (mda) in the spermatozoa and seminal plasma of asthenozoospermic and normozoospermic males. in addition, correlation of lipid peroxidation with mot...

Journal: :Animal : an international journal of animal bioscience 2012
S Khalajzadeh A Nejati-Javaremi H Mehrbani Yeganeh

Stochastic simulation was used for studying the impacts of sexed semen on genetic progress and reproductive performance of dairy cows. Three strategies were compared: WSS (use unsexed semen in cows and heifers), SSH (use sexed semen in heifers and unsexed semen in cows) and SSCH (use sexed semen in both cows and heifers). Conception rate (CR) of unsexed semen was considered to be 35% and 65% in...

Journal: :Human reproduction 2005
Carolina Almeida Margarida F Cardoso Mário Sousa Paulo Viana Ana Gonçalves Joaquina Silva Alberto Barros

BACKGROUND There are no studies relating the apoptotic marker caspase-3 in human sperm to different degrees of abnormal sperm concentration, morphology and rapid progressive motility. METHODS Semen from 67 males with abnormal semen analyses (n = 61) and normozoospermia (n = 6) were used. In each case, sperm from the neat semen (semen fraction) and after gradient centrifugation and swim-up (sw...

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