Home > Search Results: keywords:"pohlavní soustava"
Search:
Search Tips :: Advanced Search
Search collections:
Sort by: Display results: Output format:
National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Kvalitativní a kvantitativní ukazatele ejakulátu kohoutů výchozích snáškových linií kura domácího (gallus domesticus)
 Bestová, Barbora
Bachelor's thesis describes the qualitative and quantitative indicators of roosters ejaculate. Literary review deals with the reproductive system of domestic fowl, the composition of the ejaculate, sperm morphology and spermatogenesis. It also deals with macroscopic and microscopic evaluation of semen. It altso describes the morphological defects in sperm. The methodology to evaluate the qualitative and quantitative indicators of ejaculate of two laying breeds - Rhode Island White and Brindle Plymouth Rocsk. Both breeds have fewer than 20% of morphologically abnormal sperm. Most of the changes were represented at the connecting piece, the head and a tail.
Detailed record
Kvalitativní a kvantitativní ukazatele ejakulátu kohoutů výchozích snáškových linií kura domácího (gallus domesticus)
 Bestová, Barbora
Bachelor's thesis describes the qualitative and quantitative indicators of roosters ejaculate. Literary review deals with the reproductive system of domestic fowl, the composition of the ejaculate, sperm morphology and spermatogenesis. It also deals with macroscopic and microscopic evaluation of semen. It altso describes the morphological defects in sperm. The methodology to evaluate the qualitative and quantitative indicators of ejaculate of two laying breeds - Rhode Island White and Brindle Plymouth Rocsk. Both breeds have fewer than 20% of morphologically abnormal sperm. Most of the changes were represented at the connecting piece, the head and a tail.
Detailed record
Developmental defects of reproductive system in selected species of mammals
 Vedralová, Petra ; Chmelíková, Eva (advisor) ; Krejčířová, Romana (referee)
Genital organs of males and females provide the reproduction and survival of the species. If the gonads or efferent tract are formed abnormally or missing, reproductive anomalies arise. Then development of female or male gametes are not normal and fertilization and pregnancy or sexual act can not be performed. It is in all livestock but also in all mammals. Developmental disorders of reproductive system are usually inherited and they are passed from parents to offspring. Defects may occur at the chromosomal, gonadal or phenotypic level. Monosomy and trisomy are serious disorders of chromosomal sex and they cause infertility of affected individual. Sex reversal is included among the defects of gonadal sex. Anomalies of phenotypic sex are hermaphroditism and pseudohermaphroditism. Hypoplasia of the ovaries and testes and frequent cryptorchidism belong to defects of the gonads. The most common anomalies of the efferent genital tract are aplasia of Müllerian and Wolffian ducts, hypospadia and diphallia. Developmental defects are grave. Because of them the reproduction is not successful or even impossible. Animals in testing or breeding with disorders are excluded from breeding programme to defects not get among descendants. The occurrence of genital tract defects causes reproductive disorders and infertility. It is linked closely with the economy mainly in livestock. So the breeding is lossy. Breeding is healthier and more successful if methods for describing are improved and selection is realized.
Detailed record

Interested in being notified about new results for this query?
Subscribe to the RSS feed.
Digital Repository :: Search :: Submit :: Personalize :: Help
Powered by Invenio v1.1.2
Maintained by admin.invenio@techlib.cz
This site is also available in the following languages:
Česky  English