Experiment on frozen semen by the straw method.
نویسندگان
چکیده
منابع مشابه
The clinical use of frozen semen banks.
In humans, use of frozen semen is still limited to the activities of a few centers. Procedure for freezing semen involves adding .1 ml of glycerol for each milliliter of semen to be frozen. The specimen is then transferred into sterilized ampules in 1 ml quantities and sealed. The ampules are then suspended in liquid nitrogen vapor at a temperature of -99 degrees C for 1/2 hour. Following t...
متن کاملBasic aspects of frozen storage of semen.
Basic concepts of cryopreservation and the causes of cryoinjury are reviewed. The possible roles of cryoprotectants and additives are considered in the context of their putative interactions with the sperm plasma membrane. Modern approaches to the laboratory assessment of spermatozoa after freeze-thawing are also briefly discussed.
متن کاملBreeding With Chilled And Frozen Semen
Artificial Insemination (AI) involves the introduction of sperm into the reproductive tract of the mare without natural mating. AI in the horse was first practiced long ago. Ancient Arabian texts describe how mares were successfully inseminated. In the late 18th Century, an Italian scientist took the idea up again. He performed a series of studies in which he placed stallion semen in the snow a...
متن کاملUltrasonographic diagnosis of the retained semen straw in the uterus of a repeat breeder cow
A 6-year-old lactating Holstein cow with a history of repeat breeding syndrome (failed to conceive afterthree artificial inseminations (AI) with fertile semen) was referred to the Veterinary Teaching Hospital of theSchool of Veterinary Medicine, Shiraz University. According to the history, neither abnormal clinical signs,nor uterine discharge had been observed subsequent to AI. The cow had show...
متن کاملthe role of task-based techniques on the acquisition of english language structures by the intermediate efl students
this study examines the effetivenss of task-based activities in helping students learn english language structures for a better communication. initially, a michigan test was administered to the two groups of 52 students majoring in english at the allameh ghotb -e- ravandi university to ensure their homogeneity. the students scores on the grammar part of this test were also regarded as their pre...
15 صفحه اولذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nihon Yoton Gakkaishi
سال: 1989
ISSN: 1881-655X,0913-882X
DOI: 10.5938/youton.26.53