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Wyświetlanie 1-10 z 85
Tytuł:
Phagocytosis of neutrophils in rabbits infected with antigenic variants of RHD (rabbit haemorrhagic disease) virus
Autorzy:
Niedzwiedzka-Rystwej, P.
Deptula, W.
Tematy:
phagocytosis
neutrophil
rabbit
animal infection
antigenic variant
rabbit hemorrhagic disease virus
hemagglutination
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:
https://bibliotekanauki.pl/articles/31977.pdf  Link otwiera się w nowym oknie
Opis:
The present study was aimed at determining changes in chosen elements of phagocytosis in rabbits infected with 3 antigenic variants of RHD – Hartmannsdorf, Pv97 and 9905, which differed in haemagglutination ability. The animals were tested for phagocytosis parameters, and the results revealed that the examined strains showed the differences. These variations regarded mainly Pv97 strain, as the intensity of the changes were 5 times stronger in comparison to strain Hartmannsdorf and 9905. As all of the strains examined are signified as antigenic variants, we have stated that this feature does not determine their immunological picture. The results suggest the existence of immunological dissimilarities among strains of the RHD virus, which was revealed for the first time in antigenic variants.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relationships between meat quality traits of Popielno White rabbits
Autorzy:
Palka, S.
Migdal, L.
Otwinowska-Mindur, A.
Kmiecik, M.
Tematy:
correlation
meat quality traits
rabbit
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Wydawca:
Polskie Towarzystwo Zootechniczne
Powiązania:
https://bibliotekanauki.pl/articles/2119557.pdf  Link otwiera się w nowym oknie
Opis:
The purpose of the study was to determine the phenotypic correlations between meat quality traits in Popielno White rabbits. The experimental material consisted of 93 Popielno White rabbits (49♀; 44♂). From weaning at 35 days of age until 84 days of age, the animals were housed in a battery system and fed ad libitum with a complete feed containing 10,2 MJ of metabolic energy, 16,5% total protein and 14% crude fibre. The rabbits were slaughtered at 84 days of age with a body weight of about 2,6 kg. The research material was the meat of longissimus lumborum muscle. Meat quality characteristics, i.e. meat acidity, meat colour, shear force, meat texture and cooking loss, were examined. The results were analysed using the SAS package (2014). Many statistically significant relationships were found between the meat quality characteristics of Popielno White rabbits. The results indicate that potential selection towards a change in pH value may adversely affect the meat texture of Popielno White rabbits. Selection to improve the colour of the meat of this breed may have a negative effect on its shear force, hardness and cooking loss. Selection to improve shear force will improve the other texture profile parameters. An improvement in the meat texture parameters of Popielno White rabbits will lead to an improvement in the cooking loss value. Dependencies among meat quality traits in Popielno White rabbits are high enough to be useful in selecting an appropriate breeding method.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study by scanning electron microscopy of the morphogenesis of filiform and fungiform papillae in the rabbit, Oryctolagus cuniculus f. domestica
Badanie przy pomocy mikroskopu elektronowego skaningowego morfogenezy brodawek nitkowatych i grzybowatych u królika, Oryctolagus cuniculus f. domestica
Autorzy:
Kulawik, M.
Godynicki, S.
Tematy:
domestic rabbit
rabbit
Oryctolagus cuniculus f.domestica
scanning electron microscopy
morphogenesis
filiform papilla
fungiform papilla
papilla
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Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Powiązania:
https://bibliotekanauki.pl/articles/44839.pdf  Link otwiera się w nowym oknie
Opis:
Rudiments of fungiform papillae were observed at day 18 of prenatal development. They were arranged only on the dorsal surface of the apex of the tongue and its margins. The fungiform papillae looked like a hemispherical, dome-shaped eminences. From day 22 of prenatal development, scanning electron microscope showed also that rudiments of fungiform papillae appeared on the body of the tongue at the front of forming torus linguae, and on its both sides. No rudiments of filiform papillae were observed at day 22 of prenatal development. However, after removal the epithelium, the connective tissue cores of rudiments of fungiform and filiform papillae were visible. Scanning electron microscopy showed on the surface of the tongue numerous filiform papillae at day 26 of prenatal development. They were arranged on the entire dorsal surface of the apex and body of the tongue, and on its margins. During morphogenesis two types of filiform papillae were noticed. One type of filiform papillae was similar to separated cones, another had 3–4 processes more. The similar changes was with the shape of connective tissue core. The fungiform papillae were located among filiform papillae. Scanning electron microscope showed three types connective tissue cores of developing fungiform papillae. One type was mace-shaped, another one was bowl-shaped and yet barred-shaped. At day 30 of postnatal development on the surface of the connective tissue cores of fungiform papillae, from its top towards its base there were parallel and longitudinal folds.
Zawiązki brodawek grzybowatych obserwowano w 18 dniu rozwoju prenatalnego. Były one rozmieszczone na powierzchni grzbietowej wierzchołka języka i na jego brzegach. Brodawki grzybowate wyglądały jak półkoliste, kopulaste wyniosłości. Od 22 dnia rozwoju prenatalnego, mikroskop elektronowy skaningowy wykazał, że zawiązki brodawek grzybowatych pojawiły się także na trzonie języka przed formującym się wałem języka i po jego bokach. Żadnych zawiązków brodawek nitkowatych nie obserwowano w 22 dniu rozwoju prenatalnego. Jednak po usunięciu nabłonka, zręby łącznotkankowe zawiązków brodawek grzybowatych i nitkowatych były widoczne. Mikroskop elektronowy skaningowy wykazał na powierzchni języka liczne brodawki nitkowate dopiero w 26 dniu rozwoju prenatalnego. Były one rozmieszczone na całej powierzchni grzbietowej wierzchołka i trzonu języka i na jego brzegach. Podczas morfogenezy zanotowano dwa typy brodawek nitkowatych. Jeden typ brodawek nitkowatych był podobny do pojedynczych stożków a drugi miał dodatkowe 3-4 wyrostki. Podobne zmiany dotyczyły kształtu zrębu łącznotkan- kowego. Brodawki grzybowate zlokalizowane były pośród brodawek nitkowatych. Mikroskop elektronowy skaningowy wykazał trzy typy zrębów łącznotkankowych brodawek grzybowatych. Jeden typ był kształtu buławkowatego, drugi miseczkowa- tego a kolejny beczułkowatego. W 30 dniu rozwoju postnatalnego, na powierzchni zrębów łącznotkankowych brodawek grzybowatych, od ich wierzchołka w kierunku podstawy przebiegały podłużne i równoległe fałdy.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Alice - "Follow the White Rabbit" - parasites of farm rabbits based on coproscopy
Autorzy:
Kornas, S.
Kowal, J.
Wierzbowska, I.
Basiaga, M.
Nosal, P.
Niedbala, P.
Tematy:
coccidian fauna
White rabbit
parasite
farm animal
rabbit
coproscopy
fecal analysis
Protozoa
coccidiosis
parasitic infection
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Wydawca:
Polskie Towarzystwo Parazytologiczne
Powiązania:
https://bibliotekanauki.pl/articles/5965.pdf  Link otwiera się w nowym oknie
Opis:
The aim of the study, conducted in the years 2011–2013, was to determine the level of gastrointestinal parasites infection in New Zealand White rabbits, kept at the Experimental Station of the University of Agriculture in Krakow. The study showed rabbits protozoan infection with the genus Eimeria, belonging – based on the sporulation method – to the following species: E. magna, E. media, E. perforans, E. stiedae and E. irresidua. The highest prevalence of infection, as well as the intensity of oocysts output (OPG – oocysts per gram of faeces), was noted for E. magna and E. media – respectively 31.4 % (19477.3 OPG), and 40.0 % (14256.07 OPG). The infection of rabbits with Eimeria spp. differed significantly between years. With regard to oocysts output, the level of infection was strongly connected with the age of rabbits, being higher in young animals. However, the range of infection was highest among adults. Among nematodes, Passalurus ambiguus pinworm was regularly found (prevalence reached 21.9%), other species – Trichuris leporis, and Graphidium strigosum were rarely noted. The overall infection with nematodes did not differ between years. Similarly, as in the case of Eimeria older individuals were more often infected by nematodes. We observed some trends in parasite oocysts/eggs output; the protozoan oocysts were recorded more often in faecal samples collected in the evenings, whereas the nematodes eggs occurred frequently in the mornings. This situation may be related to the phenomenon of coprophagy occurring in the mammals of Lagomorpha order. The results of the study indicate that especially coccidiosis constitute permanently throughout the years an important problem in the rabbitry examined.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cytometric analysis of lymphocytes T and B in rabbits infected with non-haemagglutinogenic strains of RHD virus [rabbit heamorrhagic disease] - Rainham, Frankfurt and Asturias
Autorzy:
Niedzwiedzka-Rystwej, P
Deptula, W.
Tematy:
T lymphocyte
B lymphocyte
cytometric analysis
rabbit
rabbit hemorrhagic disease virus
infection
animal infection
non-hemagglutinogenic strain
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:
https://bibliotekanauki.pl/articles/31408.pdf  Link otwiera się w nowym oknie
Opis:
The present paper refers to the cytometric analysis of lymphocytes T (with receptor CD5+), Th (with receptor CD4+), Tc/Ts (with receptor CD8+), lymphocytes CD25+ and lymphocytes B with receptor CD19+ in rabbits experimentally infected with strains of RHD virus - Rainham, Frankfurt and Asturias, not having haemagglutinogenic capacities, which makes them unique, as haemagglutinogenic capacity is a classic and typical property of most strains of this virus. The study was performed in the dynamic system, drawing blood samples from animals at hour 0, namely before the administration of the viral antigen, and then at 4, 8, 12, 24 and 36 h after the infection. The study indicated that Rainham and Asturias strains of RHD virus cause a similar amount of changes as the most immunogenic haemagglutinogenic strains CAMP V-561 and CAMP V-562 of the RHD virus do. In contrast, the Frankfurt strain of the RHD virus is characterised with 5-6-fold lower reactivity in this respect and is most similar to the least immunogenic haemagglutinogenic strain CAMP V-558 of the RHD virus.
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-10 z 85

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