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Metodą ankietową oceniono zwyczaje i preferencje żywieniowe osób powyżej 50-tego roku życia, uwzględniając występowanie ewentualnych zmian chorobowych zależnych od wieku i odżywiania. Pierwszy etap przeprowadzono na losowo wybranej grupie 100 osób. W kolejnym etapie badań ankietę przeprowadzono w Domu Pomocy Społecznej dla osób starszych w Lublinie. Ocenione zostały także jadłospisy pensjonariuszy. Niezależnie od wieku i miejsca zamieszkania, najliczniejszą grupę respondentów stanowiły osoby z nadwagą. Wraz z wiekiem obniżeniu ulegały odczuwanie smaku i zapachu oraz apetytu. W posiłkach losowo wybranych respondentów, jak i podopiecznych DPS, należy zmniejszyć udział białka oraz tłuszczu, zwłaszcza zwierzęcego. Zmniejszenie spożycia mięsa i jego przetworów oraz równoczesne zwiększenie podaży warzyw, owoców mogłyby spowodować poprawę sposobu żywienia badanych pensjonari uszy. Wskazane byłoby rozłożenie dziennej racji pokarmowej z trzech na 4-5 posiłków.
The aim of this study was to estimate fatty acid composition, health related lipid indices (atherogenic-AI and thrombogenic-IT indices, h/H ratio) and the correlation between these traits and cholesterol content in various tissues of fatteners. The experiment involved 60 crossbred pigs (PL × PLW) × Duroc. The animals were slaughtered at 115 ± 2.0 kg body weight. The tissue samples (backfat, m. longissimus, liver, heart) were collected to analyze fatty acid profile and cholesterol content. The highest PUFA level was determined in the fat of the heart and liver. Weak to moderate correlations were observed between cholesterol content and most of the studied indices of fatty acid profile of the analyzed tissues. Importantly, the most significant correlations were established between the examined traits in the heart fat. Generally, irrespective of tissue type, the cholesterol level was negatively correlated with total PUFA, n-3 and n-6 FA content and h/H ratio.
This study was carried out on the farm specializing in organic pig production on 80 fatteners of the Polish native Pulawska breed, allocated into 4 groups (20 pigs each): EM – entire (uncastrated) males, IM – immunocastrates – males vaccinated with Improvac®, CM – surgically castrated males and G – gilts. The highest average daily gains were achieved by the IM group, slightly lower by EM, whereas the lowest by CM and G groups. Content of polyunsaturated fatty acids (PUFA) in intramuscular fat and backfat (10.19% and 10.68%, respectively) of IM was lower (P ≤ 0.05) than in fat of EM (11.4% and 13.20%, respectively), but higher (P ≤ 0.05) in comparison to CM (8.43% and 8.71%, respectively). Vaccination of boars against GnRH has not decreased quality traits of organically produced pork. Furthermore, comparing to meat from surgically castrated males, it resulted in better qualities (lower fat content in carcass, higher PUFA level in fat, better physicochemical meat properties).
The aim of the study was to analyse the effect of glycerin supplementation of dairy cow diets on haematological indices. The trial was carried out on two farms keeping 72 (farm S) and 68 (farm R) dairy cows (Polish HF, Black-and-White variety). On both farms the diets were based on maize silage and hay, and on farm S they cows also received haylage. Cows with daily milk yield of over 25 kg received a concentrate mixture. Forty-eight cows were used in the experiment. The experimental factor was glycerin (300 g/head/day) added to the diet for 4 weeks (1 week preceding calving and 3 weeks of lactation). During the experiment (2nd and 6th weeks of lactation) feed intake and milk yield were measured and samples were taken of feeds, milk and blood. The results were analysed statistically using Statistica 5.1 .G using analysis of variance. Significance of differences between means was determined by Duncan’s multiple confidence interval at 0.05 and 0.01. The glycerin supplement (300 g/head/day) influenced the values of blood indices, increasing haematological parameters and leukocyte count and elevating the proportion of lymphocytes in the leukogram. In cases of energy deficiency during the periparturient period in dairy cows, a supplement of 300g/head/d of pure glycerin, administered a week before calving and for 3 weeks of lactation, can be an effective prophylaxis of metabolic diseases in high-yield dairy cows.
Badaniami objęto 4 gatunki ryb słodkowodnych: szczupak (Esox lucius L.), sandacz (Sander lucioperca L.), karp (Cyprinus carpio L.) i leszcz (Aramis brama L.), odławianych po 6 sztuk w odstępie miesięcznym, od września do listopada 2007 roku. Oceniono cechy morfometryczne ryb oraz zawartość składników odżywczych, mineralnych i profil kwasów tłuszczowych w ich mięsie. Zawartość składników odżywczych w mięsie ryb zależna była od pory połowu – ich udział malał w kolejnych miesiącach. Największy udział nasyconych kwasów tłuszczowych oznaczono w tłuszczu mięsa leszczy oraz szczupaków. Najmniej kwasów wielonienasyconych zawierało mięso karpi, najwięcej natomiast szczupaków i sandaczy. Również najbardziej korzystnym, z punktu widzenia żywieniowego, stosunkiem kwasów tłuszczowych z rodziny n-3 do n-6 charakteryzowało się mięso szczupaków i sandaczy. Największy udział kwasu EPA stwierdzono w lipidach leszczy i szczupaków, zaś najwięcej DHA zawierał t łuszcz szczupaków i sandaczy. Zawartość metali ciężkich była mniejsza od dopuszczonych norm prawnych, przy czym nie stwierdzono istotnych różnic determinowanych okresem odłowu ryb.
The aim of the study was to evaluate the effect of an inulin source (aqueous or aqueous-alcoholic extract, dried chicory root, or dried Jerusalem artichoke tubers) on piglet performance, plasma lipid profile, and immunoglobulin concentration. The study was conducted on 534 piglets (44 litters) allocated to five nutritional groups: group I (control) - fed basal diet, groups II and III receiving basal diet supplemented with 2% of inulin (aqueous and aqueous-alcoholic extract respectively), and groups IV and V - 4% additive of dried artichoke or dried chicory respectively. During the trial, piglets' body weight, feed intake, diarrhoea incidence, and mortalit) were controlled. Blood samples were collected twice from six animals of each group. In blood plasma, indices of lipid profile and concentrations of IgA, IgG and IgM were measured. The addition of inulin, regardless of its form (extracts or dried plants), significantly improved the rearing indices. In piglets of groups III, IV and V a significant improvement of daily weight gains and feed efficiency was noted. Inulin showed hypolipidemic activity (lowered total cholesterol level) and stimulated piglet immune system manifested by elevated IgA and IgG concentrations. Irrespective of the inulin source, a lower mortality rate resulting from the improvement of animal health was noted in all experimental groups.
Effect of herbal mixture in beef cattle diets on fattening performance and nutrient digestibility. The aim of the study was to evaluate the impact of herbal mixtureaddition in beef cattle diet on daily weight gain, feed utilization and the nutrient digestibility. The study was performed on 16 Limousin bulls during the fattening period from 100 kg to 650 kg of body weight. The animals were divided into two groups: a control (C) and experimental (E) group. All experimental bulls received the same daily rations composed of basal feeds and a concentrate mixture. The experimental factor was a certified mixture of dried chopped herbs (the author's own elaboration): Echinacea (Echinacea purpurea Moench.), garlic (Allium sativum L.), thyme (Thymus vulgaris), caraway (Carum carvi), and liquorice(Glycyrrhiza glabra), given additionally to the rations, in the amount of 3% of the predicted daily dry matter intake. During the study, the feed intake, animal weight gain, feed utilization per 1 kg of body weight gain, and nutrient digestibility were determined.The digestibility study was performed with the indicator method using acid-insoluble ash (AIA) as internal indicator. The addition of herbs improved animals’ performance. Higher daily gains in the experimental group of animals (1194 g/day/animal), compared to those fed without the addition of herbs (982 g/day/animal), were found with simultaneous better feed utilization for 1kg of growth (5.01 kg in the experimental group, 5.94 kg in the control group). Higher apparent protein and fat digestibility coefficients were noted in the animals from the experimental group (by 1.3 and 2.5 percentage points, respectively), compared to the control ones. In conclusion at least a 3% addition of herbal mixture containing Echinacea, garlic, thyme, caraway,and liquoricecan be recommended in beef cattle diet in order to improve thefattening performance. The addition of herbs improves animals’ performance. Higher daily gains in the experimental group of animals, with simultaneous better utilization of feed per1 kgof growth, were found.
The aim of the study was to evaluate the haematological, biochemical and immunological blood parameters of beef cattle fed diets including a herbal mixture. The study was conducted in a herd of Limousin cattle reared under organic conditions. The study material consisted of 16 selected animals divided into 2 groups: control and experimental (8 animals each). Fattening was conducted from about 100 to about 650 kg body weight. The experimental factor was a certified organic mixture of chopped dried herbs: purple coneflower (Echinacea purpurea Moench.), garlic (Allium sativum L.), thyme (Thymus vulgaris), caraway (Carum carvi), licorice (Glycyrrhiza glabra), fed with a concentrate mixture in an amount of 3% total DM. During the study, at body weights of about 250 and 650 kg, blood samples were taken. In whole blood samples, RBC – red blood cell count, Hb – hemoglobin concentration, Ht – hematocrit and white blood cell count (WBC) and their percentage (leukogram) were determined. The biochemical markers in the plasma were determined by colorimetric methods (TG – triacylglycerols, CHOL – total cholesterol, HDL – high density lipoprotein) and by the kinetic method (enzyme activity: ALT- alanine aminotransferase and AST – aspartate aminotransferase). Immunoglobulin IgG, IgA, and IgM concnetrations in the blood plasma of the animals were determined by the immunoenzymatic (ELISA) method. The results were analyzed statistically with Statistica ver. 13 (StatSoft, 2016), and the significance of differences between the mean values of the tested parameter was determined by the Tukey test (P ≤ 0.05 and P ≤ 0.01). The addition of a mixture of herbs to the diet of fattening cattle caused a positive immunostimulatory effect by modulating the leukocyte count and composition of blood and increasing the concentration of G class immunoglobulin. The herbal mixture used in the experiment demonstrated a hypocholesterolemic effect and enhanced the organism’s defence mechanisms. The addition of the herbal mixture did not adversely affect liver functions, as confirmed by the aspartate and alanine aminotransferase activities.
The study was performed to evaluate the effect of a dietary level of two types of inulin differing in the degree of polymerization (DP), supplemented at different levels, on selected metabolic and immunological parameters of broiler chicken blood. Two hundred and forty 1-day-old broiler chickens were fed a diet without inulin addition (control group, C) or with standard inulin from chicory root with DP ≥ 10 (SI) or long-chain inulin (LCI) of DP ≥ 23 (Inulin Orafti®GR or Inulin Orafti®HPX, respectively; Orafti Beneo GmbH, Mannheim, Germany) at a level of 0.2%, 0.4%, or 0.6%. Therefore, 7 dietary treatments were formed. The experiment was carried out for 6 weeks. The addition of inulin had a significant (p ≤ 0.05) impact on the blood parameters analyzed, especially on the protein and lipid profile. The degree of polymerization of inulin and its level in the diet significantly affected the content of glucose and uric acid and creatinine levels in the blood plasma of 21-day-old chickens. The addition of the different types (SI vs. LCI) and levels (0.2, 0.4, and 0.6) of inulin to the diet and the interaction of these factors affected the total protein level and the content of albumins and globulins. Some differences (p ≤ 0.05) were found between the experimental groups in total cholesterol and its HDL fraction content as well as in the activity of ALT and LDH. The other biochemical indices were not affected by the experimental factors. In conclusion, it may be stated that inulin with the higher polymerization degree (LCI; DP ≥ 23) provided better results of the blood metabolic profile throughout the broiler fattening period. However, the impact of this factor is not explicit. The addition of the inulin extract at an amount of 4-6 g per kg of mixture is recommended, but further experiments are recommended.
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