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nr 3
EN
The aim of the study was to analyse whether and to what degree the use of RRR-d-α-tocopherol in diets containing an oil rich in linoleic or linolenic acid (soyabean or linseed oil, respectively) would make it possible to halve the dosage of this antioxidant with respect to that of α-tocopherol without negatively affecting the metabolic status and rearing performance of slaughter turkey hens. A study was performed on 480 one-week-old turkey hens reared until the 16th week of life. The hens in groups I and II received soyabean oil, in groups III and IV linseed oil in feed mixture. The birds in groups I and III received dl-α-tocopherol acetate, whereas those in groups II and IV RRR-d-α-tocopherol. The body weight gain and feed intake were monitored. Selected haematological and biochemical parameters were estimated in blood. The linseed oil was found to improve production effects and carcass traits in turkey hens. It may also contribute to stimulation of erythropoiesis. It should be emphasized, however, that it may overburden the organism, as indicated by the increased activity of liver enzymes. It is possible to use the natural form of tocopherol in diets rich in linoleic and linolenic acid (soyabean/linseed oil) without detrimental effect on metabolic status and rearing performance in turkey hens. Nonetheless, the commonly used tocopherol acetate, despite the higher dosage, is cheaper and has similar effects. Thus, from an economic point of view, the use of linseed oil with the synthetic form of vitamin E can be recommended.
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tom 36
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nr 2
518-523
PL
Oznaczono zawartość garbników, kwasu szczawiowego oraz pierwiastków śladowych (Cu, Zn, Fe) w herbatkach owocowych, ziołowych i owocowo ziołowych przeznaczonych dla niemowląt i dzieci do lat 3. Przeprowadzone analizy wykazały iż, w herbatkach specjalnego przeznaczenia żywieniowego (dla niemowląt i dzieci do lat trzech) zawartość garbników była istotnie wyższa w porównaniu z zawartością jaką stwierdzono w herbatkach przeznaczonych dla dzieci starszych i dla dorosłych. Z kolei zawartość kwasu szczawiowego w herbatkach dla niemowląt i dzieci do lat 3 była istotnie niższa niż w pozostałych herbatkach. Uzyskane zawartość pierwiastków śladowych (Cu, Zn, Fe, Mn) w próbkach analizowanych herbatek można uznać za niskie, nie stanowiące zagrożenia dla zdrowia dzieci, gdyż wyłącznie w nielicznych próbkach stwierdzono nieznaczne przekroczenia norm dla tych składników.
EN
Contents of tannins, oxalic acid and trace minerals were determined in fruit, herbal and herbal- fruit instant tea assigned for children up to 3 year old. The conducted analyses revealed that instant tea intended for infants and small children were characterized by essentially higher tannins contents and lower oxalic acid level as compared to values recordered in instant tea for adults and elder children. Trace minerals (Cu, Zn, Fe, Mn) contents in samples of analysed tea of special destination may be treated as low and did not create the danger for children health, because only in a few samples insignificant outreaching of their permissible level was noted.
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nr 1
161-165
EN
This paper deals with determining nitrates (III) and (V), lead and cadmium in 10 apple, 10 plum, 12 strawberry, 12 raspberry, and 10 white grape samples. Examined products originated from allotment gardens localized in the center of Lublin as well as in its surroundings. Among the analyzed fruits, the highest nitrate (III) contents were found in plums and white grapes harvested from the allotments located outside the city. Regardless of the harvest site, the highest content of nitrates (V) was recorded in strawberries. Exceeding permissible lead levels occurred in the majority of analyzed fruit samples, while in the case of cadmium, the permissible limit was exceeded only in white grape samples.
EN
The aim of the study was to determine whether silver nanoparticles (Ag-NPs) administered per os to chickens as a hydrocolloid at a dose of 2.87 or 12.25 mg per bird per whole experiment (D1 and D2, respectively) will affect the accumulation of this element in tissues, immune and antioxidant responses, and how the increasing of the Ag-NPs size from 5 nm to 25 or 40 nm (S-5, S-25 and S-40, respectively) will influence these processes. The experiment was carried out on 280 chickens assigned to 7 experimental groups. The control group did not receive Ag-NPs. Other chickens received a hydrocolloid of Ag-NPs at a concentration of 5 mg · l–1 in the drinking water in 1 cycle × 7 days (days 8–14 of life) for D1 and in 2 cycles × 7 days (days 8–14 and 36–42 of life) for D2. Neither Ag-NPs addition influences performance parameters of birds. All sizes of Ag-NPs were accumulated in the intestine and liver with the higher dose the higher accumulation relation. The villus height to crypt depth ratio in jejunum was decreased by Ag-NPs administration. All doses and sizes of Ag-NPs stimulated the immune system (except S-40(D1) treatment) and intensified oxidation stress in relation to the control group. However, the changes observed in the immunological indices do not allow to draw clear conclusions about the occurrence of inflammation state in the organism of chickens receiving Ag-NPs. Concluding, it has been demonstrated that oral administration of Ag-NPs to chickens influences the morphology of the gastrointestinal tract and the parameters of immune and redox status. This effect varies depending on the dose and size of used Ag-NPs, so there is still a need for further investigation in order to assess the suitability of Ag-NPs in poultry nutrition.
EN
The aim of the study was to evaluate the effect of partial replacement of soybean meal (SM) with 3 or 6% of fermented soybean meal (FSM) on growth performance, gut microbiota, intestinal histology and immunity of chickens. In the study one-day-old male Ross 308 chickens raised to the age of 40 days were used. The experiment was carried out on 600 animals assigned to three experimental groups of 200 birds each (10 replications of 20 individuals each). In the control group (C), SM was the main source of dietary protein, whereas the chickens from FSM-3% and FSM-6% groups were fed diets in which SM was partially replaced with FSM at a dose of 3 and 6%, respectively. It was shown that partial replacement of SM with FSM (both 3 and 6%) improved the chicken growth performance and dressing percentage, and modulated the immune system. However, the introduction of a 6% dose of FSM was found to better improve the morphology of intestines (reflected by increased villi length and crypts depth) than a 3% FSM dose. It also contributed to a decrease in total number of fungi and coliforms in the jejunum. Based on the obtained results, it can be concluded, that it is better to use a 6% share of FSM in chicken feed, than a 3% share.
EN
The aim of the study was to evaluate the influence of prolonged and interrupted stress in the form of crowding, temperature decrease and light change on levels of turkey-hen’s selected blood indices, including anti-oxidation system factors. The investigations involved a medium-heavy type of turkey-hen BUT-9, reared from 6 till 16 weeks of life. The birds were randomly divided into 3 groups consisting of 60 turkey-hens each (2 replications of 30 birds each). Group I was the control. Groups II and III were subjected to the experimental factor: stress in the form of crowding, as well as temperature and light changes. The stress exposure frequency was the differentiating factor. Birds from group II were exposed to the stress for a 28-day-period every 2 days for one hour daily. Turkey-hens of group III were stressed for a 28-day period everyday for an hour daily. A three-week break with no stress was applied after 28 days of the experiment. After that period the experimental factors were applied once more for 28 days. Blood for the tests was taken from the birds’ wing vein at the end of 9th, 12th and 16th week of life. Corticosterone and malonic dialdehyde (MDA) levels were determined in blood serum to find out if stress factors affected the birds. Quantitative ratio of heterophylls to lymphocytes (H:L) as an indicator of environmental stress was also determined. Moreover, peroxide dismutase activity, glutathione peroxidase and catalase activities in blood erythrocytes as well as zinc, copper and iron in blood serum of turkey-hens were recorded. Results indicate that except for glutathione peroxidase stress exerted a significant influence on all tested parameters of a turkey-hen’s blood. The applied experimental factor appeared to be a higher stress for intensively stressed turkey-hens, which is proved by the significant increase of corticosterone and malonic dialdehyde levels as well as the H:L ratio. A significant dependence between the activities of anti-oxidation enzymes (SOD and CAT) in blood erythrocytes and copper, zinc and iron concentrations in blood serum suggests that anti-oxidation immune mechanisms cannot efficiently protect an organism against any stress during trace element deficiencies. In consequence, it may affect the strengthening of lipid peroxidation processes of poultry exposed to stress.
PL
Oznaczono zawartość wybranych metali oraz azotanów i azotynów w owocach żurawiny błotnej oraz borówki czarnej i czerwonej zebranych w rejonie Lubelszczyzny. Próby do badań pobrano na terenach potencjalnie narażonych i nie narażonych na ekspozycją zanieczyszczeń. Analizowane owoce charakteryzowały się bardzo wysoką zawartością kadmu mieszczącą się w granicach od 0,082 mg/kg do 0,59 mg/kg, co znacznie przekraczało wartość dopuszczalną (0,05mg/kg). Zawartości pozostałych badanych metali (Pb, Zn, Cu, Fe, Mn) były dosyć niskie i nie stanowiły zagrożenia dla zdrowia człowieka. Poziom azotanów w badanych owocach był stosunkowo niski i nie przekraczał 3,4 mg/kg. Również zawartość azotynów okazała się nieznaczna i oscylowała w granicach 0,584-0,69lmg/kg.
EN
The content of some metals as well as nitrate and nitrite in cranberry, blueberry and red berry fruits gathered in the region of Lublin was determined. Samples for determinations were taken from areas potentially exposed and unexposed to pollution. Analysed fruits were characterised with very high Cd content ranged from 0,082 mg/kg to 0,59 mg/kg. It considerable exceeded the admissible level (0,05 mg/kg). The content of remaining metals (Pb, Zn, Cu, Fe, Mn) were low enough and did not create danger for human health. The level of nitrate in studied fruits was low comparatively and did not exceeded 3,4 mg/kg. The content of nitrite turned out inconsiderable also and ranged from 0,584 mg/kg to 0,691 mg/kg.
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