Temat: ejaculate - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Interactions of ostrich egg yolk lipoproteins with seminal plasma of fractionated ejaculates and their effects on post-thaw boar semen quality
Autorzy:: Fraser, L.
Zasiadczyk, Ł.
Strzeżek, J.
Kordan, W.
Mańkowska, A.
Powiązania:: https://bibliotekanauki.pl/articles/2087484.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: boar semen
ejaculate fractions
egg yolk lipoproteins
cryopreservation
Źródło:: Polish Journal of Veterinary Sciences; 2019, 3; 463-473
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Acrosin system of dog spermatozoa and reproductive tract secretions
Autorzy:: Strzezek, R
Koziorowska-Gilun, M.
Filipowicz, K.
Powiązania:: https://bibliotekanauki.pl/articles/32251.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: dog
semen
proacrosin
acrosin
spermatozoon
sperm-rich fraction
whole ejaculate
antitrypsin activity
antitrypsin inhibitor
seminal plasma
ejaculate
Beagle dog
mixed breed
Opis:: The aim of this study was to determine the activity of proacrosin and acrosin in spermatozoa originating from the sperm-rich fractions (SRF) and whole ejaculates (WE) of dog semen. In addition, experiments were conducted to determine the activity of antitrypsin inhibitors in the fluids of different ejaculate fractions and whole seminal plasma. Ejaculates were collected from five dogs of mixed breed and one Beagle dog (aged from 2 to 9 years). In the SRF, it was confirmed that the activity of the free acrosin form was predominant (acrosin / proacrosin; 2.38 ± 0.22 / 1.05 ± 0.08 mIU / 106 spermatozoa). On the other hand, spermatozoa originating from the WE exhibited significantly higher (p<0.05) proacrosin activity (proacrosin / acrosin; 2.19 ± 0.19 /1.30 ± 0.11 mIU / 106 spermatozoa). Furthermore, acrosin inhibitor activity was lower in the fluids of the pre-sperm fraction (0.09 ± 0.006 IU / cm3), whereas it was higher in the fluids of the post-sperm fraction (0.11 ± 0.007 IU / cm3). Using PAGE analysis, the antitrypsin activity of the enzyme was represented by the presence of one electrophoretic band in the fluids of the pre-sperm and post-sperm fractions and whole seminal plasma. Furthermore, two electrophoretic bands were detected in the fluids of the SRF. The findings of this study indicate that specific proteinase inhibitors present in the individual ejaculate fractions of dog semen may act by stabilizing the sperm acrosin system.
Źródło:: Polish Journal of Veterinary Sciences; 2010, 13, 1; 69-73
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Effect of sperm concentration in an ejaculate on morphometric traits of spermatozoa in Duroc boars
Autorzy:: Kondracki, S.
Wysokinska, A.
Iwanina, M.
Banaszewska, D.
Sitarz, D.
Powiązania:: https://bibliotekanauki.pl/articles/31784.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: sperm concentration
ejaculate
morphometry
spermatozoon
Duroc boar
boar
morphology
animal reproduction
mammal
Opis:: The experimental material consisted of 75 ejaculates collected form 8 Duroc boars. The ejaculates were divided into three groups according to sperm concentration in an ejaculate. An ejaculate was obtained from each boar monthly and it was used to make microscopic preparations to examine spermatozoa morphology. In each preparation morphometric measurements were taken of fifteen randomly selected spermatozoa characterized by normal morphology. The following measurements of spermatozoa were taken: length and width of the spermatozoa head, head area, length of the flagellum, perimeter of the spermatozoon head and total spermatozoon length. The results were used to calculate indicators of spermatozoa morphology. Moreover, assessments were made of frequency of morphological defects to isolate spermatozoa with primary and secondary abnormalities following the Blom classification system. It was found that the concentration of spermatozoa in the ejaculate influenced the morphometric characteristics of spermatozoa. Ejaculates with low sperm concentrations are characterized by larger spermatozoa as compared to ejaculates with high sperm concentrations. However, sperm concentration in the ejaculate does not much influence the shape of spermatozoa.
Źródło:: Polish Journal of Veterinary Sciences; 2011, 14, 1
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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