this experiment was conducted using 216 male chicken (ross 308) to evaluate the effects of organic selenium and sodium bicarbonate supplementation on blood parameters, growth performance and carcass characteristics in heat stress condition. birds were reared under same condition and fed with similar diets till 28 d of age. at 28 days of old, broiler with similar weight were regrouped within die...

Two well-known antioxidative nutrients, vitamin E and selenium, were used in this study to investigate possible inhibitory action against the formation of esophageal adenocarcinoma (EAC) in rats. In this model, carcinogenesis is believed to be driven by oxidative stress. Male Sprague-Dawley rats (8 weeks old) were divided into four groups and received esophagoduodenal anastomosis (EDA) surgery ...

an experiment was conducted to evaluate the effects of high dietary levels of selenium (as sodium selenite) and copper (as copper sulphate) on growth performance, serum biochemical parameters and antibody production against newcastle disease vaccine (ndv) virus in broiler chickens. a total of 160 ross 308 unsexed day old broiler chickens were randomly allocated into four treatment groups (n=40 ...

Introduction. Selenium is a micronutrient embedded in several proteins. In adults, the thyroid is the organ with the highest amount of selenium per gram of tissue. Selenium levels in the body depend on the characteristics of the population and its diet, geographic area, and soil composition. In the thyroid, selenium is required for the antioxidant function and for the metabolism of thyroid horm...

OBJECTIVE This study aimed to review the literature about blood concentrations of selenium associated with gestational age, feeding, supplementation and related clinical features in preterm infants. DATA SOURCES Systematic review in the following databases: MEDLINE, PubMed, Google academics, SciELO. org, ScienceDirect (Elsevier) and CINAHL-Plus with Full Text (EBSCO). Articles published up to...

This research was carried out to investigate the effects of various levels of dietary organic selenium supplementation (0, 0.1,  0.2 and  0.3 mg/Kg) on reproductive traits of rooster. Semen was collected using abdominal massage and samples were mixed together. Sperm characteristics including percentage of motile, viable and abnormal sperms were assessed. This experiment was carried out based on...

AIM To study the bioavailability of selenium enriched yeast in preterm infants living in a low selenium area (Hungary). METHODS Thirty six preterm infants were randomly assigned to two groups at birth with respect to selenium supplementation. In the supplemented group (n = 18) infants received 4.8 mg of selenium enriched yeast containing 5 micrograms selenium daily. RESULTS In the supplemen...

In the 1996 Nutritional Prevention of Cancer (NPC) trial, selenium supplementation was associated with a reduced risk of prostate cancer. This relationship was further studied in two large well‐ designed clinical trials, but no significant associations were found. However, the study populations in both of these trials had a moderate to high selenium status while the NPC trial population had a l...

Two concepts are often currently applied to selenium in adult men in the United States: • Intake is generally enough to maximize blood glutathione peroxidase activities. • In such men, selenium supplementation does not reduce risk of prostate cancer. In contrast to these concepts, 30 healthy middle-aged men were studied to test the following hypothesis: 6-week supplementation of 200 μg of selen...

Selenoproteins such as glutathione peroxidases (GPx), thioredoxin reductases (TrxR), and selenoprotein P (SePP) contain molecular selenium in form of selenocysteines within their active center. They are involved in the defense of reactive oxygen species, which otherwise may cause DNA damage and alterations of protein function. Selenium intake has been linked to colon carcinogenesis in epidemiol...