نتایج جستجو برای: Daily Sperm Production
تعداد نتایج: 824557 فیلتر نتایج به سال:
background: phenol is an estrogenic and toxic compound and people are widely exposed to it, in different ways. objectives: the aim of this study was to determine the negative effects of phenol on the fertility of male mice, by investigating sperm parameters including viability, motility, fertility rates and daily sperm production (dsp). methods: a total of 106 adult nih mice were divided int...
Background: Phenol is an estrogenic and toxic compound and people are widely exposed to it, in different ways. OBJECTIVES: The aim of this study was to determine the negative effects of phenol on the fertility of male mice, by investigating sperm parameters including viability, motility, fertility rates and daily sperm production (DSP). METHODS: A total of 106 adult NIH mice were divided int...
Background: Heroin is one of the opiates which is used, as the most addictive drugs, in Iran. Considering the damaging effects of these drugs on the health of opiate addicts, investigation on the effects of heroin used in Iran, on male genital indicators including daily sperm production and its development, which has an essential role in fertility, seems to be necessary. Materials and Methods: ...
T ESTICULAR spermatid reserves have been quantified for bulls, buffalo-bulls, deer, boars, rabbits, guinea pigs, roosters and humans. Generally, a modification of the technique described by Amann and Almquist (1961) has been used. Daily sperm production can be calculated by dividing the value for testicular spermatid reserves by a time divisor which is the number of days of production these res...
The objectives of the present work were 3-fold. First, a new method for estimating daily sperm production was validated. This method, in turn, was used to evaluate testis output as well as deferent duct throughput. Next, this analytical approach was evaluated in 2 experiments. The first experiment compared left and right reproductive tracts within roosters. The second experiment compared reprod...
Background and purpose: Nowadays, the side effects of chemical drugs such as dexamethasone, as a steroidal anti-inflammatory factor, is considered on reducing male reproductive potential. The aim of this study was to evaluate the effect of pentoxifylline on sperm parameters and biochemical factors in mice treated with dexamethasone. Materials and methods: In this study, 24 adult male NMRI mice...
BACKGROUND Several factors have been shown to influence semen parameters, one of which is sexual abstinence; a clinical criteria included in the semen evaluation to provide maximum sperm quality. The aim of the present study was to assess the effect of a daily ejaculation frequency on conventional and functional semen parameters. METHODS Semen samples were collected daily over a period of two...
The non-sperm components of an ejaculate, such as copulatory plugs, can be essential to male reproductive success. But the costs of these ejaculate components are often considered trivial. In polyandrous species, males are predicted to increase energy allocation to the production of non-sperm components, but this allocation is often condition dependent and the energetic costs of their productio...
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