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Wyświetlanie 1-6 z 6
Tytuł:
The effect of Artichoke (Cynara scolymus L.) on the expression of calcium-binding proteins in the eggshell gland of laying hens
Autorzy:
Abadjieva, D.
Ankova, D.
Grigorova, S.
Kistanova, E.
Powiązania:
https://bibliotekanauki.pl/articles/2087239.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
hens
egg shell gland
genes
artichoke
Źródło:
Polish Journal of Veterinary Sciences; 2021, 24, 1; 127-133
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Antioxidant enzymes activity, GSH and MDA level in eggs from heritage breeds
Autorzy:
Muchacka, Renata
Sosnówka-Czajka, Ewa
Skomorucha, Iwona
Kapusta, Edyta
Greń, Agnieszka
Goc, Zofia
Powiązania:
https://bibliotekanauki.pl/articles/2183563.pdf
Data publikacji:
2018-12-31
Wydawca:
Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Tematy:
antioxidant enzymes
eggs
GSH
hens
MDA
Opis:
The objective of the study was to determine the activity of antioxidant enzymes and the level of GSH and MDA in yolk and albumen of hen’s eggs. The experiment was carried out with 99 hens of three heritage breeds (‘Greenleg Partridge’ - group I, ‘Sussex’ - group II, ‘Rhode Island Red’ - group III). Layers were reared in the litter system and had outdoor access. Birds were fed ad libitum standard diets based on concentrates for laying hens and had free access to water throughout the experiment. All the groups were managed under uniform environmental (air humidity and temperature, lighting programme) and feeding conditions. At 48 weeks of age, 6 eggs from each group were collected. In the samples of egg yolks and albumens the concentration of GSH and MDA, and activity of SOD, GPx and CAT were estimated. The results were statistically analysed by one-way analysis of variance and significant differences were estimated with Duncan’s multiple range test. The highest activity of SOD, the highest level of GSH and the lowest level of MDA were characterised by eggs from ‘Sussex’ hens, which may indicate their best quality. Based on the obtained results, it can be concluded that the activity of antioxidant enzymes (mainly SOD) and the levels of GSH and MDA which occur in eggs may depend on the breed of hens.
Źródło:
Annales Universitatis Paedagogicae Cracoviensis Studia Naturae; 2018, 3 (suppl.); 47-53
2543-8832
2545-0999
Pojawia się w:
Annales Universitatis Paedagogicae Cracoviensis Studia Naturae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of accumulation of fluorine compounds in selected tissues of laying hens depending on the distance from sources of pollutant emissions in Central Pomerania, Poland
Autorzy:
Bombik, E.
Bombik, A.
Powiązania:
https://bibliotekanauki.pl/articles/1192784.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
fluorine compounds
laying hens
pectoral muscles
liver
breastbones
Opis:
The research aim was to evaluate the levels of contamination with fluorine compounds in selected tissues of laying hens kept in a free range system in Central Pomerania (Poland) in relation to the distance from contaminant emission sources. The study covered 60, randomly selected, two-year-old laying hens on 6 farms. Fluorine levels in tissues of laying hens were determined with the potentiometric method using an ion-selective electrode from ORION. The results for the tissues and organs, such as pectoral muscles, livers and breastbones, were investigated with an analysis of variance, the Tukey’s test and linear correlation coefficients. The analyses revealed a higher mean fluorine compound content in the pectoral muscles, livers and breastbones of laying hens in zone 1, located 50 km to the west of the contaminant emission sources, than in zone 2, situated between 80 and 100 km to the west of the pollution sources. Fluorine compound levels in the pectoral muscles of zone 1 birds were almost twice as high in hens from experimental zone 2 (respectively: 1.835 mg kg-1 of DM and 0.978 mg kg-1 of DM). A statistically significantly higher average content of fluorine compounds (4.92 mg kg-1 of DM) was found in the liver of laying hens in zone 1, nearer to the sources of fluorine compounds emission compared to zone 2 (3.34 mg kg-1 of DM). The mean fluorine compounds content in the breastbones of hens in zone 1 was more than 4 times as high as the level of this element identified in the bones of hens kept in zone 2 (respectively: 765 mg kg-1 of DM and 183 mg kg-1 of DM). A significant positive correlation was confirmed between fluorine compound levels in the breastbones and pectoral muscles. The lower level of fluorine compounds in the examined tissues of laying hens in zone 2 could have been influenced by the dominant west and south wind, which limited the spread of pollution. This may also be due to the lower level of fluorine compounds in soil and feed for laying hens in this zone determined in previous studies. The study showed that the closer the sources of emissions of fluorine compounds, the more fluoride in hard tissues of hens’ bodies.
Źródło:
Journal of Elementology; 2021, 26, 1; 75-85
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected blood parameters in organically raised hens fed with purple coneflower supplemented diet**
Autorzy:
Sosnówka-Czajka, Ewa
Skomorucha, Iwona
Powiązania:
https://bibliotekanauki.pl/articles/2183568.pdf
Data publikacji:
2018-12-31
Wydawca:
Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Tematy:
blood parameters
chicks
hens
immunity
organic production
purple coneflower
Opis:
The aim of the study was to determine the effect of dietary addition of dried purple coneflower (Echinacea purpurea (L.) Moench) on selected blood parameters of chicks and hens of the native ‘Greenleg Partridge’ breed (Z-11), maintained on a certified poultry farm according to organic farming principles. Birds were divided into two groups according to diet: organic layer diet (group 1), and the same diet supplemented with certified purple coneflower from 20 weeks of age at 10 g/kg feed (group 2). Layers were fed the certified layer diet (17% protein and 11.1 MJ ME/kg diet) following organic farming principles. Experimental incubations were performed at 34 wks of age. Blood was collected from laying hens at 34 wks and from newly hatched chicks at one day of age to determine selected blood parameters. The organically raised ‘Greenleg Partridge’ hens and chicks responded to the purple coneflower supplement by changes in blood picture, which are important indicators of avian health and condition. As in Z-11 chicks, purple coneflower supplemented to the layer diet reduced the H:L ratio and induced a tendency for higher level of the immunoglobulin complex and IgG in blood, which shows their better living comfort and higher immunity. Dietary purple coneflower was observed to have no effect on the level of hematocrit, erythrocytes and leukocytes. High individual variation occurred for the immunoglobulin complex and IgG in the organically raised ‘Greenleg Partridge’ hens.
Źródło:
Annales Universitatis Paedagogicae Cracoviensis Studia Naturae; 2018, 3 (suppl.); 72-82
2543-8832
2545-0999
Pojawia się w:
Annales Universitatis Paedagogicae Cracoviensis Studia Naturae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of lycopene and astaxanthin in feed on metabolic parameters of laying hens, yolk color of eggs and their content of carotenoids and vitamin A when stored under refrigerated conditions
Autorzy:
Shevchenko, L.V.
Iakubchak, O.M.
Davydovych, V.A.
Honchar, V.V.
Ciorga, M.
Hartung, J.
Kołacz, R.
Powiązania:
https://bibliotekanauki.pl/articles/2087136.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
feed additives
antioxidants
laying hens
blood biochemical parameters
egg yolkquality
Źródło:
Polish Journal of Veterinary Sciences; 2021, 24, 4; 525-535
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Differential influence of phytase supplementation on the balance of phosphorus and other elements in laying hens’ feed
Wpływ dodatku fitazy mikrobiologicznej w żywieniu kur nieśnych na bilans fosforu oraz innych pierwiastków
Autorzy:
Sobolewska, Sylwia
Orda, Janusz
Budny-Walczak, Anna
Powiązania:
https://bibliotekanauki.pl/articles/435357.pdf
Data publikacji:
2015-12
Wydawca:
Uniwersytet Opolski
Tematy:
phytase
laying hens
phosphorus
calcium
manganese
zinc
fitaza
kury nioski
fosfor
wapń
mangan
cynk
Opis:
The aim of this study was to evaluate the impact of microbial phytase addition to laying hen diet on the balance of phosphorus, calcium, manganese and zinc. Phytase supplementation caused a decrease in phosphorus excretion by 8% in the group with low-phytase diet and 21% in the group with phytase addition of 1000 FTU (one unit of phytase activity) to a diet. Phytase supplementation increased the retention of phosphorus by 31% in laying hens receiving 500 FTU and 57% in the group with phytase addition of 1000 FTU to a diet, in comparison to the group without enzyme supplementation. The level of manganese in excretion was increased by 18% in the group receiving 1000 FTU phytase, and retention decreased by 24% compared with the control group. Zinc excretion was significantly increased in the group receiving 500 FTU (P ≤ 0.01) and in the group receiving 1000 FTU phytase (P ≤ 0.05). Retention of zinc was lower (P ≤ 0.01) when the birds were fed with feed containing 500 FTU and 1000 FTU phytase (P ≤ 0.05), compared with the control group. No effect on the quantity and retention of calcium excretion was found. There was no impact of phytase supplementation on egg production and egg weight.
W prezentowanej pracy przedstawiono badania dotyczące wpływu dodatku fitazy mikrobiologicznej do mieszanki pełnoporcjowej przeznaczonej dla kur nieśnych na bilans fosforu, wapnia, manganu i cynku. Dodatek fitazy wpłynął na obniżenie wydalania fosforu w kałomoczu o 8% w grupie otrzymującej paszę z mniejszym dodatkiem oraz o 21% w grupie z dodatkiem 1000 FTU fitazy. Dodatek enzymu do mieszanki zwiększył także retencję fosforu o 31% u kur nieśnych otrzymujących 500 FTU i o 57% w grupie z dodatkiem 1000 FTU fitazy w porównaniu do grupy ptaków nieotrzymujących tego enzymu. Ilość fosforu wydalanego w jajach była wyrównana we wszystkich grupach i nie zaobserwowano istotnych różnic pomiędzy nimi. Kury nioski otrzymujące 1000 FTU fitazy w paszy wydalały o 18% więcej manganu w pomiocie i jednocześnie o 24% spadła jego retencja w porównaniu z grupą kontrolną. Ilość cynku wydalanego przez ptaki zwiększyła się w grupie otrzymującej 500 FTU (p ≤0.01) oraz w grupie otrzymującej 1000 FTU fitazy (p ≤0.05). Retencja cynku była niższa (p<0.01) w porównaniu z grupą kontrolną zarówno gdy ptaki żywiono paszą z dodatkiem 500 FTU fitazy, jak i w grupie dostającej 1000 FTU (p ≤0.05). Niezależnie od ilości dodatku badanego enzymu nie obserwowano jego wpływu na ilość oraz retencję wapnia wydalanego przez kury nioski. W doświadczeniu nie stwierdzono wpływu dodatku fitazy na nieśność oraz masę jaj.
Źródło:
Economic and Environmental Studies; 2015, 15, 4(36); 461-468
1642-2597
2081-8319
Pojawia się w:
Economic and Environmental Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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