Fine structure of boar sperm abnormality: Tightly coiled tail
نویسندگان
چکیده
منابع مشابه
The Fine Structure of Haematolœchus Spermatozoan Tail
For a n u m b e r of year~ investigators generally agreed that electron optical studies had established a basic pattern for the axial fiber bundle of sperm tails. This consisted essentially of two single ilia-ments centered within a ring made up of nine doublet filaments. It was further established that this structure possessed bilateral symmetry, All of the electron micrographs are from sperma...
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Though the fagellum of Sciara sperm arises from a blepharoplast and is characterized by doublet tubules with arms, it differs markedly from the familiar type of flagella in the number and arrangement of its tubules. The axial filament complex in sperm from the testis of Sciara consists of approximately 70 doublet tubules, each with an associated singlet tubule. Near the nucleus these tubules ar...
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Little information exists about boar sperm chromatin quality and fertility within a commercial setting. The objective of this report is to provide information about boar sperm chromatin integrity and its relationship to fertility. The sperm chromatin structure assay (SCSA) was used retrospectively to characterize sperm from 18 sexually mature boars having fertility information. Boar fertility w...
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Optimal sperm cryopreservation is a prerequisite for the sustainable commercial application of frozen-thawed boar semen for AI. Three experiments were performed to identify factors influencing variability of postthaw sperm survival among 464 boar ejaculates. Sperm-rich ejaculate fractions were cryopre-served using a standard freezing-thawing procedure for 0.5-mL plastic straws and computer-cont...
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Natural service boars and boars who’s semen is collected for artificial insemination make up a relatively small portion of the pig population. This may partially explain the limited amount of data on the nutritional requirements and feeding practices of adult boars. Several research and literature reviews have been done, Kemp and den Hartog (1989), Colenbrander and Kemp (1990), Close and Robert...
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ژورنال
عنوان ژورنال: The Japanese journal of animal reproduction
سال: 1978
ISSN: 0385-9932
DOI: 10.1262/jrd1977.24.89