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1

Jesienne warzywa i ich właściwości prozdrowotne

100%
Gortat M.
Nauki Przyrodnicze
|
2013
|
nr 1
2

Budowa oraz właściwości przeciwdrobnoustrojowe wybranych monoterpenów znajdujących się w roślinach

100%
Gortat M.
Nauki Przyrodnicze
|
2013
|
nr 1
3

Biodostępność magnezu i jego rola w prawidłowym funkcjonowaniu organizmu

100%
Gortat M.
Nauki Przyrodnicze
|
2013
|
nr 2
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Effect of supplementation with copper in different chemical forms on selected physiological blood markers and content of minerals in selected tissues of turkeys

63%
Makarski B., Gortat M.
Journal of Elementology
|
2011
|
tom 16
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nr 4
Scientific research has demonstrated that different compounds containing copper are capable of stimulating body weight gains, improving the health of animals and attaining high production performance without causing excessive accumulation of various chemical compounds in animal tissues. Besides, copper has been reported to exert a positive effect on the immune system, haematological blood markers and the microbiological balance in the gastrointestinal tract of turkeys. The experiment was conducted on 60 BUT-9 line turkeys. The birds were divided into 5 experimental groups. Each group included 12 turkeys kept in cages. The bird were reared for 19 weeks. The first group served as control. Group II received CuSO4 added to water in a dose of 10 mg Cu dm–3 H2O. Group III was com posed of birds administered a Cu chelate with lysine in a dose of 10 mg Cu dm–3 H2O. Group IV received CuSO4 in a dose of 20 mg Cu dm–3 H2O, whereas group V were given a Cu-lysine supplement in a dose of 20 mg Cu dm–3 H2O. The birds were fed commercial complete feed mixes. The copper preparations were added to drinking water since the 3rd week of rearing. The objective of this study has been to determine the effect of Cu supplementation in the organic and inorganic form and in two doses on the health of birds and on accumulation of minerals in their breast muscle and liver. Further analyses involved the determination of haematological and biochemical markers in blood as well as assays of selected minerals in the birds’ blood, breast muscle and liver. The analysis of the results indicated that the doses of copper improved the health of the turkeys, as verified by better haematological markers. Statistically significant difference appeared in the group receiving 20 mg Cu dm–3 H2O irrespective of the chemical form in which copper was administered. The study also shows that Cu supplementation has a significant effect on the metabolism of lipids and a non-significant impact on the content of mineral elements in the analyzed tissues. It was not until the 20 mg dose of Cu as a chelate had been applied that the accumulation of copper in the turkey’s liver was enhanced.
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Leaf petioles blanching influence on the yield and chemical composition of cardoon (Cynara cardunculus L.)

51%
Salata A., Gortat M., Buczkowska H.
Acta Scientiarum Polonorum. Hortorum Cultus
|
2017
|
tom 16
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nr 6
The influence of leaf blanching with black polyethylene non-woven (PP) or white and black polypropylene foil (PE) used as soil mulching and blanching of leaves on yield, usefulness and biological value of cardoon leaf petioles were evaluated in the presented work. The effect of blanching duration of petioles (30, 25 and 10 days before leaves’ harvest) on the content of bioactive compounds was also estimated. The aim of the research was to evaluate the total yield of leaves, yield structure, dry weight, content of crude fibre, total sugars, L-ascorbic acid, chlorophyll, phenolic acids in conversion to caffeic acid, total flavonoides and DPPH activity in leaf petioles depending on the method and duration of leaves blanching. The content of apigenin, chlorogenic acid and cynarin in leaf petioles were marked with HPLC. Petioles of non blanched plants showed more dry weight and contained more L-ascorbic acid, chlorphyll, total phenolic acids and flavonoides than the uncovered ones. As a tendency it was observed that together with lengthening the blanching time from 10 to 30 days before harvest, the level of dry weight, crude fibre, total sugars, L-ascorbic acid and chlorophyll decreased. A reverse relationship was observed related to the blanching duration, as extending the time from 10 to 30 days before harvest, the content of total phenolic acids increased from 0.144 to 0.155% of fresh weight, while the content of flavonoides decreased from 0.662 to 0.352% of fresh weight. Lengthening blanching from 10 to 30 days before harvest of leaves decreased the content of apigenin and cynarin in petioles while increased the content of chlorogenic acid. The antioxidant activity DPPH did not depend on the method and duration of blanching. Unusual nutritional and medicinal benefits of cardoon petioles come from its rich and valuable chemical composition.
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Impact of copper (Cu) at the dose of 50 mg on haematological and biochemical blood parameters in turkeys, and level of Cu accumulation in the selected tissues as a source of information on product safety for consumers

39%
Makarski B., Gortat M., Lechowski J., Zukiewicz-Sobczak W., Sobczak P., Zawislak K.
Annals of Agricultural and Environmental Medicine
|
2014
|
tom 21
|
nr 3
Introduction. The current state-of the art points to a positive impact of copper (Cu) supplements on the general health status in poultry. Copper induces beneficial changes in the haematological and biochemical blood parameters. It also displays immunostimulating properties and helps maintain a proper microbiological balance in the digestive tract. Objective. The objective of this study was to investigate the impact of Cu at the dose of 50 mg/kg BW, administered in organic and inorganic form, on the haematological and biochemical blood parameters and level of Cu bioaccumulation in the liver and pectoral muscle. Materials and method. The study was carried out on 45 BUT-9 turkeys which had been were reared for 16 weeks. They were divided into 3 experimental groups: I – the control group; II – fed with CuSO4 at the dose of 50 mg Cu·dm-3 H2O; III – received a Cu chelate with lysine at the same dose. Results. The administration of Cu at the dose exceeding the nutritional recommendations did not induce beneficial changes in the examined birds. This indicates that it is not necessary to administer Cu doses higher than the recommended levels. The extent of Cu accumulation in the pectoral muscle increased by 40% compared to the control group, whereas in the liver it was higher by 30–35% than in the birds without Cu administration. The level of Cu in tissues does not pose a risk to consumers. Conclusions. The supplementation of Cu at the dose of 50 mg has a negative impact on the level of the analyzed parameters. The results of the presented study indicate that the administered Cu dose exceeds birds’ demand for this element.
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