نتایج جستجو برای: progressive motile spermatozoa

تعداد نتایج: 137023  

Journal: :Reproduction, nutrition, developpement 1987
A I Mustafa B H Ali T Hassan

Furazolidone was given to male Nubian goats for 5 days at a therapeutic dose of 10 mg/kg or at a dose of 40 mg/kg, and the effect on semen morphology and biochemistry was studied. At the lower dose, furazolidone significantly reduced seminal ejaculate volume, the number of motile spermatozoa per ejaculate and the number of live spermatozoa per ejaculate, while secondary abnormalities increased....

Journal: :Human reproduction 2000
M N Giraud C Motta D Boucher G Grizard

Semen cryopreservation is an important procedure in the treatment of human infertility. However, the ability of spermatozoa to survive freeze/thaw processes varies between patients. Cryopreservation-induced stress may result in membrane injury with consequent loss of sperm motility and viability. We investigated the relationship between the physico-chemical state of the human sperm membranes an...

2017
Huanhua Chen Guixue Feng Bo Zhang Hong Zhou Caizhu Wang Jinhui Shu Xianyou Gan Ruoyun Lin Dongmei Huang Yingqin Huang

BACKGROUND Sperm cryopreservation is the most effective method to preserve male fertility but this is normally used for motile spermatozoa. Thus, only motile spermatozoa are used for cryopreservation in most reproductive medicine centers worldwide. The immotile spermatozoa from some problematic patients are usually discarded, resulting in a missed opportunity of sterility cryopreservation for f...

2016
Jufeng Zheng Yongning Lu Xianqin Qu Peng Wang Luiwen Zhao Minzhi Gao Huijuan Shi Xingliang Jin

INTRODUCTION Spermatozoa motility is the critical parameter to affect the treatment outcomes during assisted reproductive technologies (ART), but its reproductive capability remains a little informed in condition of severe male factor infertility. This retrospective cohort study aimed to evaluate the effects of reduced sperm motility on the embryological and clinical outcomes in intra-cytoplasm...

Journal: :Turkish Journal of Veterinary & Animal Sciences 2021

The aim of this study was to analyse semen quality parameters fresh-extended porcine imported from Denmark through prolonged importing regulations and transport fertility performance in sows inseminated four days post collection. Semen analysed immediately upon the arrival (4 collection) using computer-assisted sperm analyses (CASA), cytomorphology flow cytometry, were later same day. mean conc...

Journal: :Reproduction, nutrition, developpement 1982
C Jeulin C Serres P Jouannet

The influence of various technical procedures and diluent media upon human spermatozoa has been tested in vitro. The percentage and velocity of motile spermatozoa were measured objectively using laser Doppler velocimetry. Vitality was determined by fluorescent staining. Centrifugation of semen (diluted 1 : 1 with Tyrode) at forces of 500, 800, 1 800 and 2 500 X g resulted in almost complete sed...

Journal: :International Journal of Health Sciences (IJHS) 2022

Background: In order to offer successful assisted reproductive procedures, a variety of in vitro sperm preparation techniques were created separate normal and motile spermatozoa from other constituents the sample. Much research on laser as motility stimulant has been undertaken, results have indicated that Laser good effect activation improves progressive forward movement. Objective: This study...

Journal: :تولیدات دامی 0
رعنا جهان بین کارشناس ارشد، گروه علوم دامی، دانشکدۀ کشاورزی و منابع طبیعی، دانشگاه آزاد اسلامی واحد علوم و تحقیقات، تهران، ایران پریسا یزدان شناس کارشناس ارشد، گروه علوم دامی، دانشکدۀ کشاورزی و منابع طبیعی، دانشگاه آزاد اسلامی واحد علوم و تحقیقات، تهران، ایران مهدی امین افشار استادیار، گروه علوم دامی، دانشکدۀ کشاورزی و منابع طبیعی، دانشگاه آزاد اسلامی واحد علوم و تحقیقات، تهران، ایران عبدالله محمدی سنگ چشمه استادیار، گروه علوم دام و طیور، پردیس ابوریحان، دانشگاه تهران، پاکدشت، ایران حمید ورناصری استادیار، مرکز نهاده های دامی جاهد، تهران، ایران محمد چمنی دانشیار، گروه علوم دامی، دانشکدۀ کشاورزی و منابع طبیعی، دانشگاه آزاد اسلامی واحد علوم و تحقیقات، تهران، ایران محمدحسن نظران

the effect of zinc nano-particles (zn- nano- complex) on bull sperm quality after freeze-thawing process studied. ejaculates collected from four holstein bulls twice a week. on the day of semen collection, four ejaculates were pooled and diluted with bioxcell extender containing 0, 10-6, 10-5, 10-4, 10-3, 10-2 molar of zinc nano-complex and frozen. after thawing, sperm motility and motion param...

2016
Farzaneh Eskandari Hamid Reza Momeni

BACKGROUND Sodium arsenite can impair male reproductive function by inducing oxidative stress. Silymarin is known as a potent antioxidant. OBJECTIVE This study was performed to investigate if silymarin can prevent the adverse effect of sodium arsenite on ram sperm viability, motility and mitochondrial membrane potential. MATERIALS AND METHODS Epidydimal spermatozoa obtained from ram were di...

2016
M. Anand S. Yadav J. Kumar B. Yadav

The experiment was designed to evaluate the optimal concentration of egg yolk in extender for diluting Barbari buck semen during short-term storage at 4oC. A total of four Barbari bucks were used as semen donors during the experiment. The observed mean (±SE) valuesrecorded for percent live spermatozoa ranged from 63.5 ± 1.08 to 75.33 ± 0.99, percent progressive motile spermatozoa ranged from 54...

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