期刊
ANIMAL REPRODUCTION SCIENCE
卷 172, 期 -, 页码 1-9出版社
ELSEVIER
DOI: 10.1016/j.anireprosci.2016.04.013
关键词
Bovine semen; Sperm; Cryopreservation; Extender; Egg yolk; Soybean; Lecithin
资金
- National Dairy Research Institute, Karnal
- Cornell University
- Genex Cooperative, Inc., Ithaca, NY
- J. William Fulbright Foreign scholarship Board
- Department of Science & Technology, Govt. of India
Since the inception of bovine semen cryopreservation, egg yolk and milk based extenders have been used to protect sperm from the detrimental effects of cooling and freezing. In recent years, demand for alternatives to conventional commercial extenders has arisen as the risk of introducing exotic diseases through transporting egg yolk based products has been recognized. Egg yolk can also interfere with sperm evaluation and the presence of particulate material in the extender may reduce fertility. Soybeans contain lecithin, a phospholipid fraction that can substitute for high molecular weight lipoprotein and phospholipids from egg yolk and prevent or ameliorate damage to the sperm plasma membrane that occurs during extension, cooling, and cryopreservation. Soy lecithin based extenders have been evaluated for processing and freezing bovine semen, although extender from soybean milk has not been studied as extensively. Commercially available soy lecithin based extenders are used increasingly but remain under scrutiny and are not universally accepted. With these observations in mind, this review is intended to examine effects of conventional cryopreservation procedures, methods of assessment, and potential for developing soybean extract as an acceptable alternative to traditional egg yolk and milk based extenders for bull sperm cryopreservation. (C) 2016 Published by Elsevier B.V.
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