نتایج جستجو برای: and then thawed after 2 weeks past. semen characteristics including ph

تعداد نتایج: 17550479  

Journal: :علوم دامی ایران 0
مهرداد معمار دانش آموخته دکتری احمد زارع شحنه استاد علوم دامی سعید زین الدینی استادیار علوم دامی حمید کهرام استادیار دانشگاه تهران محمدجواد ضمیری استاد دانشگاه شیراز

seventy four 9-month-old fars indigenous roosters were randomly divided into three equal groups. the first group was exposed to 14 hours light and 10 hours darkness. the second group was exposed to the same lighting schedule as the first one and supplemented with 3 mg/kg of body weight edible melatonin daily. the third group was finally exposed to 24 hours of constant light. semen was collected...

Journal: :Theriogenology 2010
P H Purdy N Tharp T Stewart S F Spiller H D Blackburn

Boar semen is typically collected, diluted and cooled for AI use over numerous days, or frozen immediately after shipping to capable laboratories. The storage temperature and pH of the diluted, cooled boar semen could influence the fertility of boar sperm. Therefore, the purpose of this study was to determine the effects of pH and storage temperature on fresh and frozen-thawed boar sperm motili...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده مهندسی 1387

abstract this paper discusses several commonly used models for strategic marketing¹ including market environmental analysis methods (i.e. swot and pest analysis) and strategic marketing tools and techniques (i.e. boston matrix and shell directional policy matrix)and shows how these models may help a firm to achieve its strategic goals. at first, the main reason for doing this research is de...

پایان نامه :0 1374

the following question poped up: is there any relationship between iranian high school efl learners reading comprehension and listening comprehension? then the following null hypothesis (ho) was developed to the test the above, mentioned question. "there is no relationship between high school efl learners reading comprehension and listening comprehension. for nearly 16 weeks, the experimental g...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1391

1. to determine whether difference in birth body mass influenced growth performance in pipistrellus kuhlii we studied a total of 12 captive-born neonates. bats were assigned to two body mass groups: light birth body mass (lbw: 0.89 ± 0.05, n=8) and heavy birth body mass (hbw: 1.35 ± 0.08, n=4). heavier body mass at birth was associated with rapid postnatal growth (body mass and forearm length) ...

Journal: :علوم دامی ایران 0
طاهره محمدیان دانشجوی کارشناسی ارشد، گروه علوم دامی دانشکدۀ کشاورزی و منابع طبیعی دانشگاه اراک مهدی خدایی مطلق استادیار، گروه علوم دامی دانشکدۀ کشاورزی و منابع طبیعی دانشگاه اراک احمد زارع شحنه استاد، گروه علوم دامی پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج

the aim of this study was to compare the effects of using different levels of royal jelly in semen extender on viatal characteristics of goat sperm after freezing. semen was collected from four adult bucks twice a week and samples pooled together. sperm samples (six repeats) containing royal jelly in four levels (0.5, 1, 1.5 and 2%) had been frozen. after semen samples freezing – were thawed an...

Journal: :veterinary research forum 2012
kamran dorostkar sayed mortaza alavi-shoushtari aram mokarizadeh

the aim of the present study was to investigate the effect of in vitro supplementation of selenium on fresh and frozen spermatozoa quality of buffalo (bubalus bubalis) bulls. five healthy buffalo bulls (5 ejaculates from each bull) were used. each ejaculate was diluted at 37 ˚c with tris-based extender containing 0 (control), 0.5, 1, 2, 4 and 8 μg ml-1 sodium selenite and the sperm motility and...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده تربیت بدنی علوم ورزشی 1390

this research was conducted to examine the effect of a concurrent training on rest level of leptin of plasma and some hormonal factors in non-athlete subjects. the research population included non-athlete men who didn’t participate in any organized sport activities. 30 men were chosen voluntarily among the above-mentioned population and were divided into 2 groups: experimental (15 subjects) an...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم پایه 1392

a novel and ultra low cost isfet electrode and measurement system was designed for isfet application and detection of hydronium, hydrazinium and potassium ions. also, a measuring setup containing appropriate circuits, suitable analyzer (advantech board), de noise reduction elements, cooling system and pc was used for controlling the isfet electrode and various characteristic measurements. the t...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه کاشان - دانشکده ادبیات و زبانهای خارجی 1392

abstract this study aimed at investigating the possible relationship between self-assessment in writing and self-regulation of iranian efl learners. the main purpose of the study was not only to report and inform about this relationship, but also to investigate and find practical outcomes of the incorporation of self-assessment in writing, such as improving writing skill. the research was carr...

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