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Przeprowadzono doświadczenie żywieniowe na 24 tucznikach hybrydowych (PIC 408 x Camborough 24), mające na celu zbadanie wpływu mieszanek z udziałem śruty jęczmiennej lub pszenżytniej na zawartość składników podstawowych i profil kwasów tłuszczowych mięśnia longissimus lumborum i adductor oraz stężenie trójglicerydów i cholesterolu w surowicy krwi. Wykazano, że rodzaj zboża zastosowanego w mieszankach nie wpłynął w sposób statystycznie istotny na zawartość składników podstawowych (białko, tłuszcz, popiół) i profil kwasów tłuszczowych (z wyjątkiem kwasów C14:0 i C20:1 w m. adductor) w lipidach obu ocenianych mięśni. Zaobserwowano jednak nieznaczne obniżenie zawartości tłuszczu śródmięśniowego, w którym było nieco więcej wielonienasyconych kwasów tłuszczowych (głównie linolowego), a także poziomu analizowanych wskaźników krwi tuczników żywionych mieszankami z pszenżytem.
The aim of the research was to compare selected biochemical parameters of rabbits’ blood (crossbreeds) depending on the kind of diet. Twelve rabbits at the age of 2 months and at a body weight of 1.5 kg were chosen for this experiment. The animals were divided into two research groups depending on the kind of diet they were fed. The first group consisted of rabbits fed on an all-mash diet while the second group was fed according to a typical ecological model. After 7 months of the experiment blood was collected for analysis from each animal. In the blood serum samples, the activities of the following enzymes were determined: aspartate aminotransferase (AST), alanine aminotransferase (ALT), as were the concentration of glucose, urea, total protein, protein fractions and the lipid proflile (total cholesterol, HDL and LDL fractions) as well as the concentration of triglycerides. This research showed statistically significant diet-dependent differences among all biochemical parameters of blood apart from HDL fractions.
Background. The formation and development of the metabolic syndrome (MetS) is largely caused by lifestyle factors. Many studies have shown that excessive consumption of simple carbohydrates, alcohol, salt, physical inactivity and smoking increase the risk of MetS. Objective. The aim of the study was to assess the nutritional status and its relationship with selected lifestyle factors in elderly people with MetS. Material and methods. 81 people aged 51-75 participated in the study. According to the guidelines, all tests were performed on an empty stomach. The comparison of individual quantitative variables between the groups was performed using the Student's t-test for independent measurements or using the Mann-Whitney U test. The relationship between quantitative variables was verified with the Spearman's correlation coefficient. All statistical tests were based on a significance level of p<0.05. Results. The BMI, the percentage of body fat and the waist circumference significantly exceed the norm for the population in the examined persons. The responses of respondents aged 51-65 show that 36% of people sweetened their drinks, 65.6% were salted their food, 51.6% consumed alcohol, and at the age of 66-75, respectively: 47.1%, 52.9%, 41.2%. There was no correlation between sweetening beverages and salting food and the concentration of glucose and lipids. However, a positive correlation was found between the amount of salt consumed and the heart rate (r=0.28, p<0.05). In both age groups, statistically significant differences in the concentration of triglycerides depending on alcohol consumption or non-consumption were found. Due to the lack of precise data on the amount of alcohol consumed, the correlation between alcohol consumption and the concentration of glucose and lipids was not analyzed. Physical activity was not undertaken by 39.1% of patients aged 51-65 years and 41.2% of patients aged 66-75 years. In the group of elderly people without physical activity, a statistically significantly higher glucose concentration was found in relation to those who were physically active (130 mg/dl vs. 105 mg/dl; p=0.031). Patients aged 51-65 who engaged physical activity had statistically significantly lower body weight, BMI, waist circumference and lean body mass, which requires further studies. Conclusions. The anthropometric indices and parameters of MetS patients indicated disturbances in the nutritional status. Unhealthy lifestyle was shown mainly in the younger group of patients 51-65 years old (they sweetened drinks more often, salted dishes, consumed alcohol). Patients with metabolic syndrome did not undertake physical activity as often as recommended.
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