نتایج جستجو برای: semen samples were collected 36 times from each bull
تعداد نتایج: 7578744 فیلتر نتایج به سال:
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...
the history of plant’s used for mankind is as old as the start of humankind. initially, people used plants for their nutritional proposes but after the discovery of medicinal properties, this natural ?ora became a useful source of disease cure and health improvement across various human communities. berberis vulgaris is one of the medicinal plants used in iranian traditional medicine. berberis ...
this study attempts to investigate the effect of peers’ revision in comparison to that of the teacher, and whether peers’ comments and teachers’ comments facilitate students’ revision? if yes, which one is more effective? also attempts have been made to see which aspects of language are more highlighted by peers versus teachers when commenting. besides, it is investigating the student’s attitud...
semen from six adult male black bengal goats (capra hircus) was collected to compare the fresh and frozen-thawed semen quality and investigate its relationship with the fertility. each collected samples was divided into two parts: one part of semen was used as fresh and another part was filled into 0.50 ml straws, sealed, cooled (5 ˚c) and equilibrated for freezing.in both cases, semen was dilu...
BACKGROUND The current study was designed to investigate the effect of supplementation of Flaxseed (Linumusitatisimum) oil on libido and semen quality of Nilli-Ravi buffalo bulls. METHODS In this study, 12 adult healthy bulls kept at the Semen Production Unit, Qadirabad district Sahiwal, were used. These bulls were divided into three equal groups, A, B and C. Group A was kept as control, whil...
The semen used in these studies was collected from healthy dairy bulls by means of an artificial vagina and was kept in a refrigerator until used. All experiments were begun within 2 hours after the semen was collected. Observations were made on the effect of inhibitors on bull sperm in the egg yolk-buffer pabulum previously described (2, 3). Semen and yolk-buffer at pH 6.8 were mixed at the ra...
for any educational program to be successful, many factors work hand in hand. based on pervious efl studies, teachers and learners are the keys to gain achievement. granted the fact that explicit and implicit practice plays a key role in education, knowledge of it can help teachers facilitate students’ vocabulary learning. this study investigated to determine the contribution of explicit and i...
The effect of four enzymes: collagenase, fibrinolysin, hyalurodinase, and trypsin were recorded on the viscosity, motility, percent live spermatozoa and acrosome integrity of Llama and Alpaca semen. Semen samples were collected using a modified artificial vagina for each of the five llamas and five alpacas. A 25% solution of the of enzyme at a concentration of 1mg/ml was added to the ejaculate....
The present study was designed to compare fertilization rates following oocyte exposure to spermatozoa from different buffalo bulls, using three sperm preparation methods i.e. percoll density gradient, swim-up (modified Ca free Tyrode’s medium and TALP medium) and sodium citrate washing prior to co-incubation with oocytes. Buffalo oocytes were aspirated from ovarian follicles within 1.5 to 2 ho...
Results: Serum samples became PCR-positive before semen samples. During the first 6 days after inoculation, serum was PRRSV-positive in 36 of 40 boars, and semen was PRRSV-positive in four of 40 boars. Median time to detection was 36 and 48 hours for nested PCR and Taqman PCR, respectively. Results were inconsistent when a positive semen sample was pooled with negative semen. Elevated rectal te...
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