Classification of ostrich sperm characteristics
نویسندگان
چکیده
منابع مشابه
A morphological classification of sperm defects in the ostrich (Struthio camelus).
Commercial ostrich farming is constrained by the absence of a formal animal recording and evaluation scheme as well as by current farming practices. Artificial insemination may have an important role in overcoming these limitations, but requires a thorough knowledge of sperm morphology. Although the morphological characteristics of normal ostrich sperm have been documented, little information i...
متن کاملSperm-storage tubules in the vagina of the ostrich (Struthio camelus).
Sperm-storage tubules have been described in a number of species of birds. The presence of these tubules in the Rhea has been mentioned, but no description of these structures in ratites is available. The purpose of this study was to determine the presence and morphology of sperm-storage tubules in the vagina of the ostrich. The study was performed with the use of conventional light- and electr...
متن کاملOstrich diseases.
Scientific knowledge of ostrich diseases is incomplete and very fragmented, with specific details on technical aspects of diagnostic and/or screening tests completely absent in most cases. Salmonella Typhimurium is common in multispecies collections and causes mortality in chicks younger than three months on commercial farms, but is rarely found in chicks older than six months, or slaughter bir...
متن کاملSupplementing Fatty Acids to Improve Sperm Characteristics
Artificial insemination via cooled or frozen-shipped semen allows more mares to be bred to a single stallion, but not all stallions produce semen capable of withstanding the cooling and freezing procedures. Aurich et al. (1996) estimated that cooled or frozen-shipped semen achieves < 75% of the pregnancy rates achieved with fresh semen. Some factors affecting the fertility rates of thawed semen...
متن کاملHuman sperm characteristics during frequent ejaculation.
Sperm concentration, morphology, DNA condensation and nuclear protein pattern as well as sperm adenylate cyclase were evaluated in semen samples provided by 7 volunteers every 8 h for 2 days. During the observation period, sperm concentration and total sperm number decreased but began to return towards normal after a 3-day abstinence period. No increase in the proportion of immature sperm cells...
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ژورنال
عنوان ژورنال: Animal Reproduction Science
سال: 2016
ISSN: 0378-4320
DOI: 10.1016/j.anireprosci.2016.03.007