Wyniki wyszukiwania

1

The effect of dietary conjugated linoleic acid on the levels of lipids, cholesterol and iodothyronines in the blood of pigs

100%

Sechman A., Pieszka M., Rzasa J., Migdal W., Wojtysiak D., Pustkowiak H., Zivkovic B., Pasciak P.

Journal of Animal and Feed Sciences

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2007

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tom 16

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nr 2

193-204

2

Prevalence of estrogen receptor alpha PvuII and XbaI polymorphism in population of Polish postmenopausal women

80%

Jakimiuk A. J., Nowicka M., Bogusiewicz M., Adamiak A., Skorupski P., Miotla P., Rechberger T., Haczynski J.

Folia Histochemica et Cytobiologica

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2007

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tom 45

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nr 4

331-338

3

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Level of selected lipid fractions in egg yolk of hens fed with fodders supplemented with amaranth seeds

80%

Bartkowiak A., Skiba T., Kroliczewska B.

Polish Journal of Food and Nutrition Sciences

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2007

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tom 57

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nr 4[A]

3-6

This investigation was aimed at the assessment of the effect of amaranth addition to laying hens fodder on egg yolk lipid fractions. The examinations were conducted on 32-week-old laying hens of ISA SHAVER line, divided into 4 groups: control (I) – fed without supplementation and experimental (II, III and IV) fed with the addition of amaranth seeds (2%, 5% and 10%, respectively). Strict experiment lasted for 56 days. The following analyses were conducted: vitamin A, cholesterol and fatty acids content in egg yolk (after 4 weeks – series I and after 8 weeks – series II). Fatty acids content in amaranth seeds was analysed as well. There were not proved any statistically significant differences between particular groups. The highest vitamin A content in both series was assayed in the eggs of laying hens fed with the fodder containing 5% amaranth addition and ranged 1.96 μg and 4.37 μg/1 g yolk, respectively. Cholesterol level was the lowest in group III in both series (137 and 165 mg/1 g egg yolk, respectively). Fatty acids content in egg yolk was similar in all groups, although in the case of polyunsaturated acids of n-6 group, especially linoleic acid, there was reported their slightly higher level in experimental groups, with a slight increase in n-6/n-3 acids ratio at the same time.

4

Effects of high sucrose diet, gemfibrozil, and their combination of plasma paraoxonase 1 activity and lipid levels in rats

80%

Macan M., Vrkic N., Vrdoljak L. A., Radic B., Bradamante V.

Acta Biochimica Polonica

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2010

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tom 57

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nr 3

We investigated the influence of high sucrose diet (HSD) after 3 or 5 weeks of administration on paraoxonase 1 (PON1) activity in plasma of normolipidemic rats and the relationship between serum PON1 activity, triacylglycerides (TGs), HDL and total cholesterol vs. the control group of rats fed normal, control diet (CD). Because the data about the influence of gemfibrozil (GEM) on PON1 activity are controversial, we also investigated its effects (administration in the 4th and 5th week in rats on HSD and CD) on plasma PON1 activity and lipid levels in normolipidemic rats, and in rats with hypertriglyceridemia caused by HSD. Our results obtained in rats on HSD show a significant increase of plasma TGs levels by 47 % (P < 0.05) after 5 weeks of treatment, and PON1 activity by 32 % and 23 % (P < 0.05) after 3 and 5 weeks, but without change in lipid levels vs. rats on CD. In the rats on CD and HSD, GEM caused a significant decrease of PON1 activity by 44 % and 33 %, while a significant decrease of TGs level by 38 % (P < 0.05) was measured only in rats on CD. The effects of GEM on total cholesterol, HDL and LDL in both groups of rats were typical for its action on lipoprotein metabolism. Because GEM in the rat liver stimulates proliferation of peroxisomes, β oxidation, and production of H2O2, it is possible that the oxidative stress induced by GEM damages hepatocytes and lowers the synthesis of PON1.

5

Evaluation of selected feeds differing in dietary lipids levels in feeding juveniles of wels catfish, Silurus glanis L.

80%

Mazurkiewicz J., Przybyl A., Golski J.

Acta Ichthyologica et Piscatoria

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2008

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tom 38

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nr 2

91-96

Background. Development of modern aquaculture and the increasing consumer demand provoke improvements in the complex breeding technologies of economically valuable fish species. Wels catfish, Silurus glanis L. (known also as the European catfish), because of its breeding and consumption values, becomes an increasingly common object of breeding. The objective of the presented work was the evaluation of selected feeds differing in dietary lipids levels applied in rearing the wels catfish fry under controlled conditions. Materials and Methods. The feeding trial (60 days) was carried out with the wels catfish fry, weighing on average 55 g. The experiment was conducted under controlled conditions in an aquarium hall in 60-L flow-through tanks. During the growth test, the fish were given four commercial feeds of the same protein amount (45%) and graded fat levels (15%, 20%, 25%, and 30%). In the final evaluation of the feeding tests, the following rearing effectiveness indices were used: food conversion ratio (FCR), specific growth rate (SGR), protein efficiency ratio (PER), protein retention (PR), lipid retention (LR), and survival rate (SR). Conclusions were drawn on the basis of statistical analysis using Statistica computer software. Results. The wels catfish fed 20%-fat-content feed attained the highest individual weights. The other treatments yielded statistically significantly lower (P < 0.05) body weights. No statistically significant differences were found between the mean values of the specific growth rate (SGR). The values of feed conversion ratio (FCR) and protein efficiency ratio (PER) were approximately equal in the individual groups. The protein retention attained values from 28.2% to 33.0%, while fat retention ranged from 11.8% to 24.2%. No mortalities were recorded. The amount of fat in all groups increased significantly after the termination of the growth. The increase of fat amount in the feed was not correlated with the growth of fat amount in the fish body. The levels of the other body components increased, but no differences between the groups were found. Conclusion. Differentiated amounts of dietary lipids in the diet did not exert any effect on the rate of fish growth or on the proper utilization of the nutritive components in feeds.

6

The effect of glutene-free diet supplemented with Humana-MCT on the level of lipid fractions in blood serum of infants with coeliac disease

80%

Jaskiewicz J., Szafran H., Kruszewska M., Brylska U., Krol M.

Acta Physiologica Polonica

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1987

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tom 38

|

nr 1

7

Apolipoproteins AI and B, and LpAI lipoprotein particles in normocholesterolemic and hypercholesterolemic subjects with documented coronary heart disease

80%

Jarosz A., Nowicka G.

Żywienie Człowieka i Metabolizm

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2008

|

tom 35

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nr 2

The relation between coronary heart disease risk and low density lipoprotein and high density lipoprotein cholesterol concentrations is well accepted. These parameters are widely used in coronary heart disease risk assessment. However, an evidence is accumulated that other lipoprotein related parameters may be useful in CHD risk prediction. The aim of the study was to assess differences in plasma levels of apolipoproteins AI and B, and apo AI containing lipoprotein subpopulations LpAI and LpAI/AII, between subjects with and without documented coronary heart disease but similar total cholesterol and LDL cholesterol levels. 233 subjects were studied. CHD patients were characterized by higher apo B levels than Control subjects with similar LDL cholesterol levels and these differences were visible in normocholesterolemic as well as in hypercholesterolemic subjects. Significantly lower levels of LpAI particles were noted in CHD patients. The drop in LpAI was significant even when no differences in HDL-cholesterol and apo AI concentration occurred. The presented data support the idea that measurements of apolipoprotein B and apo AI and especially LpAI particles levels may improve CHD risk assessment. These markers may be particularly useful in patients with no classical risk factors, patients with serum and LDL cholesterol levels in normal range.

8

Effect of freezing desiccation on cold hardiness, ROS, membrane lipid levels and antioxidant status in spruce seedlings

80%

Kaminska-Rozek E., Pukacki P. M.

Acta Societatis Botanicorum Poloniae

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2005

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tom 74

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nr 3

The symptoms of oxidative stress and antioxidative response were investigated on Norway spruce seedlings subjected to freezing desiccation conditions. Three-year-old seedlings were exposed to freezing desiccation at -3oC and -10oC for 45 days in two acclimation stages: autumn (October) and winter (January). The stress enhanced the production of reactive oxygen species (ROS): superoxide radical anion (O2.-), and hydrogen peroxide (H2O2). Concentrations of low molecular antioxidants: glutathione (GSH), ascorbic acid (AsA) and a-tocopherol declined at both low temperatures and acclimation stages. The activity of superoxide dismutase (SOD) increased with ROS production, while guaiacol peroxidase (POX) activity decreased. The freeze-induced desiccation of needles was significantly correlated with the cold hardiness (LT50), the level of low-molecular antioxidants, and POX activity, but not with SOD activity. Under extreme freezing desiccation conditions, these reactions continued, leading to the degradation of membrane phospholipids and a strong decrease in cold hardiness. The results show that membranes are the primary site of injury induced by ROS, produced under the influence of low temperature combined with dehydration. The acclimation response of Norway spruce needles to the oxidative stress generated by long-term cold and/or freezing desiccation is discussed.

9

Growth performance of common carp, Cyprinus carpio fed varying lipid levels through low protein diet, with a note on carcass composition and digestive enzyme activity

80%

Manjappa K., Keshavanath P., Gangadhara B.

Acta Ichthyologica et Piscatoria

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2002

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tom 32

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nr 2

Protein sparing by lipid has been demonstrated in certain cultivable species of fish. This study was carried out using four low protein isonitrogenous diets (24% crude protein) formulated by supplementing varied levels of fish oil (0, 3, 6, and 9%). The diets were fed for 120 days at 5% body weight to triplicate groups of common carp (av. wt. 2.13-2.21 g) stocked at 1 per m2 in mud bottomed cement tanks (18 m2), fertilized with poultry manure. The growth of fish was the highest (P < 0.05) with the diet containing 6% fish oil, followed by 3, 9, and 0%. Food conversion ratio and protein efficiency ratio improved with increasing dietary lipid level. Dietary lipid had a positive impact on carcass lipid level (P < 0.05). Moisture and crude protein did not vary (P > 0.05) from that of the control. Survival ranged from 96.29 (T1) to 100% (T0) without any significant (P > 0.05) difference among the treatments. While there was a general increase in amylase activity in the treated fish, protease activity showed a reduction with increase in oil supplementation. No difference (P > 0.05) in lipase activity was observed between the different treatments. The results indicate the beneficial effects of incorporating fish oil in the diet of common carp.

10

The effect of dietary soybean meal on growth, nutrient utilization efficiency, and digestibility of juvenile common dentex, Dentex dentex (Actinopterygii: Perciformes: Sparidae)

71%

Tomas A., Martinez-Llorens S., Jover M.

Acta Ichthyologica et Piscatoria

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2009

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tom 39

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nr 1

Background. The aim of this work was to study the growth of juvenile dentex fed on cooking-extruded diets,determine the level of substitution of fishmeal by soybean meal may be without affecting the growth in his species and its digestibility. Materials and Methods. The availability of defatted soybean meal as a substitute for fish meal was evaluated In juvenile (41 g on average) dentex by feeding diets containing 0%–60% soybean meal, for 97 days. Results. Survival at the end of the experiment was high (80%) except for the fish fed diets with 50% and 60% substitution. Growth, feed gain ratio, and protein efficiency ratio (PER) were slightly reduced at higher soybean meal levels. Fish fed diets containing 0% to 40% of soybean meal grew significantly more and FCR was lower than fish fed other diets. No differences were obtained for protein digestibility coefficients of experimental diets (20%, 30%, 40%, and 50% SBM). Conclusion. The results confirm the best protein level for optimum growth seems to be around 50% and 12% lipid level, and maximum soybean meal substitution of 40%.

Ograniczanie wyników

The effect of dietary conjugated linoleic acid on the levels of lipids, cholesterol and iodothyronines in the blood of pigs

Prevalence of estrogen receptor alpha PvuII and XbaI polymorphism in population of Polish postmenopausal women

Level of selected lipid fractions in egg yolk of hens fed with fodders supplemented with amaranth seeds

Effects of high sucrose diet, gemfibrozil, and their combination of plasma paraoxonase 1 activity and lipid levels in rats

Evaluation of selected feeds differing in dietary lipids levels in feeding juveniles of wels catfish, Silurus glanis L.

The effect of glutene-free diet supplemented with Humana-MCT on the level of lipid fractions in blood serum of infants with coeliac disease

Apolipoproteins AI and B, and LpAI lipoprotein particles in normocholesterolemic and hypercholesterolemic subjects with documented coronary heart disease

Effect of freezing desiccation on cold hardiness, ROS, membrane lipid levels and antioxidant status in spruce seedlings

Growth performance of common carp, Cyprinus carpio fed varying lipid levels through low protein diet, with a note on carcass composition and digestive enzyme activity

The effect of dietary soybean meal on growth, nutrient utilization efficiency, and digestibility of juvenile common dentex, Dentex dentex (Actinopterygii: Perciformes: Sparidae)