نتایج جستجو برای: 15 extender compared to other extenders in conclusion

تعداد نتایج: 18719183  

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...

2009
Yusuf BOZKURT Fatih ÖĞRETMEN Faik Sertel SEÇER

The present study was conducted to evaluate the effect of different extenders and storage periods on motility and fertilizing ability of short-term stored grass carp sperm during spawning season. Sperm was collected from anesthesized males by the abdominal massage method. Having determined the main spermatological properties, the pooled ejaculates were diluted with 3 different extenders at a ra...

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

this study investigated the effects of three kinds of gloss conditions, that is traditional non-call marginal gloss, audio gloss, and extended audio gloss, on reading comprehension and vocabulary gain of iranian upper- intermediate efl learners. to this end, three experimental and one control groups, each comprising 15 participants, took part in the current study. in order to ensure that the pa...

Alavi Shoushtari SM Belbasi A Dorostkar K Khaki A, Tabassomi M Tahmasbian H

Background: Semen cryopreservation is the most important section of artificial insemination programs; it allows preservation of semen fertility for a long time. Materials and Methods: The aim of the present study was to detect the effect of in vitro supplementation of 4-hydroxy Tempo on fresh and frozen spermatozoa quality of buffalo bulls. Five healthy buffalo bulls (5 ejaculates from each bul...

2012
Luna Gutiérrez-Cepeda Álvaro Fernández Francisco Crespo Miguel Ángel Ramírez Jaime Gosálvez Consuelo Serres

BACKGROUND Variability among stallions in terms of semen cryopreservation quality renders it difficult to arrive at a standardized cryopreservation method. Different extenders and processing techniques (such us colloidal centrifugation) are used in order to optimize post-thaw sperm quality. Sperm chromatin integrity analysis is an effective tool for assessing such quality. The aim of the presen...

2011
Reza Asadpour Razi Jafari Hossein Tayefi

The objective of this study was to evaluate quality of frozen-thawed bull semen processed with extenders containing vitamin C and E as antioxidants. Pooled semen's were collected from 5 bulls and diluted to a concentration of 30 × 10 6 sperm/mL with citrate –egg yolk (CEY) or Tris – egg yolk (TEY) extenders. The diluted semen was divided to 5 aliquots including control and 4 experimental groups...

Journal: :Journal of Veterinary and Animal Sciences 2023

The study evaluated the effect of extenders and sperm concentration on migration efficiency Malabari buck spermatozoa in bovine cervical mucus. Fresh semen ejaculates collected six different days from three adult healthy bucks were pooled divided into four groups based extender used (tris-egg yolk-based or liposome-based extender) rate extension (200 400 million motile per 0.5 mL) (n=6 group) s...

2016
SA Olurode O Ajala

The survivability of caprine spermatozoa was compared in semen extenders prepared from the conventional egg-yolk citrate and goat-milk citrate. Motility was comparable in both sets of extenders during the first 24 hours post-extension when extended ejaculates were stored at either room temperature (28 O C) or refrigerator temperature (5 O C). Motility in goat milk citrate extenders at 5 O C was...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده زبانهای خارجی 1390

acknowledgements i wish to express my gratitude to all those who have helped me in preparing this thesis. i would like to express my deep gratitude to my respected advisor dr. kourosh akef, whose advice and comments helped me in the early stages of the research and throughout the writing process. i would also like to express my gratitude to dr. hajar khanmohammad whose invaluable guidance he...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد 1388

there is less published research about how teachers in efl contexts respond to students who are relatively less mature and less competent l2 writers. while writing researchers have examined various issues concerning peer and teacher response in writing-oriented classes, little research has centered on the effect of collaborative tasks particularly dictogloss on writing skills. output collaborat...

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