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Wyszukujesz frazę "Stankiewicz, T." wg kryterium: Autor


Wyświetlanie 1-5 z 5
Tytuł:
Circannual changes in serum concentrations of thyroxine, calcitonin and parathormone in immature and mature red deer females (Cervus elaphus)
Autorzy:
Kuba, J.
Blaszczyk, B.
Stankiewicz, T.
Kwita, E.
Udala, J.
Powiązania:
https://bibliotekanauki.pl/articles/31677.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
The aim of this study was to determine circannual changes in the serum concentrations of thyroxine, calcitonin and parathormone in mature and immature red deer females. Blood samples from 8 hinds were collected monthly for 26 months. Secretions of thyroxine and calcitonin showed circannual rhythms with significantly higher levels in the immature hinds compared to the mature animals (p<0.05). For thyroxine, the concentration was higher in the winter/spring period than in summer/autumn (p<0.05), while for calcitonin the concentration profile was the opposite (p<0.05). The concentration of parathormone was significantly higher in summer/autumn that in the other months of the experiment (p<0.01). These results may indicate that the hormones investigated may be involved in the regulation of seasonal reproductive activity and in processes contributing to entering puberty in red deer females.
Źródło:
Polish Journal of Veterinary Sciences; 2015, 18, 3
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bacterial contamination of boar semen and its relationship to sperm quality preserved in commercial extender containing gentamicin sulfate
Autorzy:
Gaczarzewicz, D.
Udala, J.
Piasecka, M.
Blaszczyk, B.
Stankiewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/30463.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
This study was designed to determine the degree and type of bacterial contamination in boar semen (79 ejaculates from Large White and Landrace boars) and its consequences for sperm quality during storage (27 extended semen samples, 16°C for five days) under practical conditions of artificial insemination (AI). The results revealed the presence of aerobic bacteria in 99% of the ejaculates (from 80 to 370 ×106 colony-forming units/mL). Most of the ejaculates contained two or three bacterial contaminants, while the Staphylococcus, Streptococcus, and Pseudomonas bacterial genera were most frequently isolated. Also detected were Enterobacter spp., Bacillus spp., Proteus spp., Escherichia coli, P. fluorescens, and P. aeruginosa. In general, the growth of certain bacterial types isolated prior to semen processing (Enterobacter spp., E. coli, P. fluorescens, and P. aeruginosa) was not discovered on different days of storage, but fluctuations (with a tendency towards increases) were found in the frequencies of Bacillus spp., Pseudomonas spp., and Staphylococcus spp. isolates up to the end of storage. Semen preserved for five days exhibited decreases in sperm motility and increases in the average number of total aerobic bacteria; this was associated with sperm agglutination, plasma membrane disruption, and acrosome damage. We inferred that, due to the different degrees and types of bacterial contaminants in the boar ejaculates, the inhibitory activity of some antimicrobial agents used in swine extenders (such as gentamicin sulfate) may be limited. Because such agents can contribute to the overgrowth of certain aerobic bacteria and a reduction in the quality of stored semen, procedures with high standards of hygiene and microbiological control should be used when processing boar semen.
Źródło:
Polish Journal of Veterinary Sciences; 2016, 19, 3
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Superoxide dismutase and glutathione peroxidase activity in porcine follicular fluid i relation to follicle size, birth status of gilts, ovarian location and year season
Aktywnosc dyzmutazy ponadtlenkowej i peroksydazy glutationowej w swinskim plynie pecherzykowym w odniesieniu do wielkosci pecherzyka, statusu porodowego loch, polozenia jajnika i pory roku
Autorzy:
Lasota, B
Blaszczyk, B.
Stankiewicz, T.
Udala, J.
Szewczyk, M.
Matusiak-Bielska, D.
Powiązania:
https://bibliotekanauki.pl/articles/45154.pdf
Data publikacji:
2009
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
pig
birth status
oxidative metabolism
embryo energy production
reactive oxygen species
mammal
oocyte
embryo
follicular fluid
porcine oocyte
oxidative stress
glutathione peroxidase
superoxide dismutase
porcine follicular fluid
season
ovarian location
gilt
follicle size
Źródło:
Acta Scientiarum Polonorum. Zootechnica; 2009, 08, 1-2; 19-29
1644-0714
Pojawia się w:
Acta Scientiarum Polonorum. Zootechnica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected meat and fattening features and sperm quality in young purebred and hybrid boars
Wybrane cechy użytkowości tucznej i mięsnej a jakość nasienia u młodych knurów ras czystych i mieszańców
Autorzy:
Udala, J.
Kwita, E.
Gaczarzewicz, D.
Kuba, J.
Stankiewicz, T.
Blaszczyk, B.
Pilarczyk, B.
Tomza-Marciniak, A.
Bakowska, M.
Powiązania:
https://bibliotekanauki.pl/articles/44978.pdf
Data publikacji:
2015
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Źródło:
Acta Scientiarum Polonorum. Zootechnica; 2015, 14, 2
1644-0714
Pojawia się w:
Acta Scientiarum Polonorum. Zootechnica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Serum selenium concentration and glutathione peroxidase activity and selenium content in testes of Polish Konik horses from selenium-deficient area in North-Western Poland
Autorzy:
Pilarczyk, B.
Tomza-Marciniak, A.
Stankiewicz, T.
Blaszczyk, B.
Gaczarzewicz, D.
Smugala, M.
Udala, J.
Tylkowska, A.
Kuba, J.
Ciesla, A.
Powiązania:
https://bibliotekanauki.pl/articles/31875.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
The aim of this study was to determine serum selenium concentrations in Polish Konik horses residing in the Odra Delta Nature Park (Poland) and to evaluate the activity of glutathione peroxidase and Se content in testes of this horse breed. In over 95% of cases, serum Se concentration was below the optimal range, and none of the horses examined was deficient in this trace element. The lack of Se deficiency in the animals examined suggests however, that the Polish Konik horses have a natural ability to the optimal use of nutrients available in their life area. Testicular content of Se and GSHPx activity in the colts was higher than those found in stallions, and a positive relationship between these antioxidants was demonstrated. The differences in Se contents and GSHPx activities in testes between colts and stallions suggest that selenoenzymes play important roles during the puberty of male horses.
Źródło:
Polish Journal of Veterinary Sciences; 2014, 17, 1
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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