The results of 47 experiments with broilers over the period 1974 to 1983 were selected for regression analysis. Included were those dealing with the relationship of growth and food utilisation to content of dietary protein (DP), metabolisable energy (DME) and added fat (DAF) in conventional feedingstuffs. Significant correlations were found ...

The validity of 2 electrothermal atomic absorption spectrometric methods for determination of selenium in foods and diets was tested. By using 0.5% Ni(II) as a matrix modifier to prevent selenium losses during the ashing step, it was shown that selenium can be determined in samples containing greater than or equal ...

Performance from 1 to 56 d and some aspects of gut morphology were examined in broilers fed on five nutritionally similar diets in mash or pellet form varying in acid-detergent fibre content from 50 to 100 g/kg. Dietary fibre and physical form did not significantly affect food consumption. Growth and ...

Levels of As and Se in human foods and animal feeds respectively have decreased in recent years as a result of official limits and other factors. The reduction of SeO2 by SO2 to Se0 results in less bioavailability in the food cycle. Acid rain further reduces the pH of Se-depleted ...

An endemic disease was discovered in 1961 in parts of the population of Enshi County, Hubei Province of the People's Republic of China. During the years of the highest prevalence, from 1961 to 1964, the morbidity was almost 50% in the 248 inhabitants of the five most heavily affected villages; ...

Salivary glands with high, low, or no peroxidase activity do not differ in [S14CN-] after the i.v. injection of KS14CN, nor do the glands differ from blood and muscle in [S14CN-]. The content of SCN- in a salivary gland does not mirror the gland's participation in the peroxidase-mediated antimicrobial mechanism.

Recommendations for safe and adequate dietary intakes of selenium were recently established. The recommendations were based largely on data from animals, because few data for humans were available. Some information regarding the dietary selenium intake required by humans to replace excretory losses has now appeared, but the bioavailability to humans ...

In the present study, the plasma and erythrocyte Se concentration and the erythrocyte and leukocyte glutathione peroxidase (GSH-Px) activity in 20 patients affected by multiple sclerosis (MS) were compared with those of a group of healthy controls. The Se concentration in the food was also studied and found to be ...

When the average intake of selenium among the Finnish population during the period 1941 to 1981 was estimated, the proportion of imported grain used for human consumption, as well as its country of origin, was taken into account as a factor increasing the total intake. The figures indicting the intake ...

Various aspects of selenium metabolism and nutrition in relation to the question of selenium bioavailability in foods and the diet of man are reviewed. Few published studies exist on selenium metabolism in human subjects, particularly those representative of healthy individuals in the United States. Animal studies reveal that various factors, ...

1. Seasonal influence on pancreatic activity has been determined in the frog Rana esculenta. 2. Protein content, amylase activity and cyclic nucleotide levels, show significant changes throughout the year, being higher in the active period (spring, summer), with respect to a constant pancreas weight. 3. A significant correlation between protein ...

The effect of varying dietary protein content on the activity of human pancreatic proteinases was studied in healthy volunteers. Following the consumption of food with a higher protein content, proteinases activities in duodenal aspirate after pancreozymin and secretin stimulation showed an increasing trend only for a period of 14 days ...

A prospective review of 272 institutionalized cerebral palsy residents was undertaken in order to determine the incidence and characteristics of neuromuscular scoliosis in this population. The types of cerebral palsy in the group consisted of 75% spastic, 8% dyskinetic, 4% ataxic, 8% mixed, and 5% undefined. There was a 64% ...

Grain, flour and milk samples were collected in spring 1980 and analysed for selenium. The selenium content of flour was approximately 10 times higher than in 1975-1977, and that of milk twice as high. The increase in the selenium content of flour is a reflection of the massive grain imports ...

The concentration of selenium in soil, water, or minerals is site specific. World or regional averages are of little practical value. In one report from the front range area of Colorado, average selenium concentrations in bodies of standing water were from 0.3 to 15.8 micrograms Se per liter of water. ...

The occurrence of selenium (Se) in foods and the toxicological information relevant to it are reviewed. The estimated normal dietary daily intake for man in most parts of the world ranges from 4-35 microgram/person in infants to 60-250 microgram/person in adults. The current use of Se supplementation in animal feeds ...

We assayed the availability of selenium in feeds and selenomethionine relative to selenium in sodium selenite for restoring blood serum glutathione peroxidase activity in selenium-depleted chicks. The contents of total selenium (determined by neutron activation analyses) were for eight samples of capelin fish meal, 1.34, two samples of mackerel fish ...

In this bench study, coffee and soy sauce stained composite resin restorations to a significantly greater degree than did tea or cola beverage. Generally, the greatest degree of staining with all samples occurred during the first week of the study time. The stain penetration was superficial and was estimated to ...

The collagen, elastin, total sugar, and nonscleroprotein content was evaluated in 32 samples of saphenous varicose vein and in 34 controls. A significantly lower collagen and elastin content was found in the varicose samples without correlation with the degree of pathologic broadening. Otherwise the total sugars and the soluble nonscleroproteins ...

The multiple components of soybean ferric leghemoglobin are readily separated by analytical and preparative flat bed isoelectric focusing in both the presence and also the absence of the ligand nicotinate. In the presence of nicotinate the separation by isoelectric focusing is more rapid and results in sharper bands of the ...

A study of wholebody elimination of mercury (203HgCl2) and selenium (75SeO2-3) given separately or simultaneously in single doses by intraperitoneal injections to mice has been performed. The conclusion of this study can be summarized as follows: there seems to exist a homeostatic mechanism for selenium, but not for mercury; increased ...

In two experiments, Sprague-Dawley rats were administered elemental selenium (Se; 10 ppm), silver (Ag; 1000 ppm) and arsenic (As; 50 ppm), either alone or in combination (Ag+Se or As+Se). Administration was via drinking water. Body weight, fluid intake, and food consumption were monitored weekly and measures of forelimb and handlimb ...

Selenium and vitamin E exert powerful effects in reducing acute or chronic methylmercury toxicity. Levels of selenium normally found in foods (below 1 ppm) delay the onset of toxic signs caused by much higher levels of methylmercury. Tissue levels of mercury in selenium-supplemented animals equal or exceed those found in ...

Six kittens, three males and three females, were fed exclusively for one hundred days a commercially canned red meat tuna found to contain elevated concentrations of Mercury (Hg) and Selenium (Se). A similarly sized control group was fed for the same period a dry commercial cat food comparatively low in ...

1. The amount of selenium in nationally representative samples of prepared and cooked groups of foods, and in a variety of raw individual foods, was determined fluorimetrically. 2. The average British diet was calculated to provide approximately 60 microgram Se/d, of which half was derived from cereals and cereal products ...

A method based on acid digestion, hydride evolution atomic absorption spectrophotometry for estimating microgram and submicrogram quantities of As and Se in foods was developed and evaluated. Samples up to 3 g dry weight were digested with HNO3-HCIO4-H2SO4. As and Se in aliquots of the digests were reduced with NaBH4 ...

The effect of combined supplementation with selenium and Vitamin E upon fertilization of ova was evaluated in beef cattle maintained on either an adequate or inadequate nutrition. Fertilization of ova was 100% in those females receiving supplemental selenium/vitamin E and on an adequate plane of nutrition. Interaction between plane of ...

Selenium is an unusual trace element, since both toxicities and deficiencies are known to occur in animals in the United States under natural conditions. Such extremes in the selenium intake of animals are due to the fact that the plants consumed by the animals are often of local origin and ...

No data are available on Selenium concentration in the Italian environment in spite of its importance as an essential and toxic element. In order to get some information about the concentration and distribution of this element in the environment and in the food-chain, a survey has been made in the ...

Practical diets containing various selenium levels, with and without selenite supplementation, were fed to hens. Eggs were then collected over a 14-day period to determine how quickly changes in dietary selenium affected egg white and yolk selenium. Changes in egg white selenium content were rapid and essentially completed seven days ...

Data were collected on the selenium concentration in human mature milk from a total of 241 subjects who resided in or near cities located in 17 states across the United State. The overall mean value for the selenium content of mature human milk was 0.018 ppm Se. Most of the ...

Four composite diets from three cities, each representing the daily per capita consumption of foods in Canada, contained on analysis 191, 220, 113, and 150 mug selenium. Cereals provided the most selenium (62-112 mug) followed by meat, poultry, and fish (25-90 mug) and dairy products (5-25 mug). The average daily ...

In order to make a tentative recommendation for the maximum acceptable daily intake of selenium, relevant data were compiled from the available literature. Normal daily intake of selenium from foods was estimated as about 100 mug, half of which comes from fish and shellfish (in an average adult Japanese). Intake ...

An eastern gorilla group of the Mt. Kahuzi region (République du Zaïre) was studied over 15 months. Its migration route was determined, and the various biotopes it visited are described. A record was made of its main food plants, and of the plant parts eaten. For nine important food plants ...

Thesis (Ph. D.)--University of Cincinnati, 2007.

One in a series of fact sheets produced by registered dietitians at the US National Institutes of Health (NIH), in conjunction with the NIH Office of Dietary Supplements. This fact sheet explains what selenium is, what foods provide it, the recommended dietary allowance, causes of selenium deficiency and who is ...