Levels Of Organic Selenium Research Articles

Effect of Egg Injection with Different Levels of Organic Selenium and Spirulina Algae Extract in the Blood Biochemistry of Broiler Chickens

Effect of Egg Injection with Different Levels of Organic Selenium and Spirulina Algae Extract in the Blood Biochemistry of Broiler Chickens

Effect of Enrichment of Laying Quail Diets with Organic Selenium on Performance and Fresh and Stored Egg Quality

Selenium, which is a good antioxidant, is an essential trace mineral and its organic forms are more available than inorganic forms. Dietary deficiency or excess of this trace mineral causes health problems in poultry, and therefore the amount of selenium in the diet is controversial. The current research was carried out to determine the effect of diets enriched with organic selenium on the performance, egg quality, and stored egg properties in laying quails. In the study, 120 laying quails were allocated to six treatment groups with 20 quails in each, with five subgroups. Quails were fed for 70 days with experimental diet containing 0.12 mg/kg selenium based on corn-soybean meal enriched with the addition of organic selenium (Sel-Plex) at 0.0, 0.2, 0.4, 0.6, 0.8, or 1.0 mg/kg. Body weight change decreased linearly with the addition of 0.6 mg/kg and further levels of organic selenium (P<0.05). Feed intake quadratically increased with the supplementation of organic selenium up to 0.8 mg/kg, but it was minimum at 1.0 mg/kg (P<0.05). The eggshell quality parameters were not affected by the administration of organic selenium to the diet (P>0.05). Albumen pH linearly decreased with organic selenium supplementation up to the level of 0.60 mg/kg, but increased with the addition of higher levels of organic selenium (P<0.05). With the addition of organic selenium to the diet, yolk L* and b* values quadratically and linearly decreased respectively, while a* value increased linearly (P<0.01). Albumen pH value of stored eggs was linearly decreased by treatments (P<0.01), but other parameters did not affect (P>0.05). As a result, it was determined that laying quails can be fed with diets enriched with organic selenium up to 0.4 mg/kg and the eggs could maintain the freshness for a longer time in during storage.

The Effect of the Nutritional Value Enhancing of the Diet Provided to Common Carp Cyprinus carpio L. by Adding Organic Selenium and Vitamin E on Growth Parameters and Food Utilization

Farmed fish are subjected to different types of stress, including grading, transfer, crowding and vaccination, which can expose the fish to different risks. Therefore, researchers are resorted to the use of many feed additives. The aim of the current research is to promote growth and reduce oxidative stress by adding different levels of organic selenium with or without vitamin α-tocopherol. A total of 24 glass aquariums are used to feed 168 common carp fingerlings, Cyprinus carpio L., with an average weight of 31 ± 2 gm/fish on eight experimental diets with three replications for each treatment. The diets offered to the fish include the control (diet 1), while organic selenium is added in the form of seleniumthionine, in proportions of 0.6, 0.7 and 0.8 mg/kg (second, third and fourth diets). The fifth, sixth and seventh diets all include the same amounts of organic selenium along with 300 mg/kg of α-tocopherol, while the eighth diet only has α-tocopherol. The statistical analysis reveals that the addition of organic selenium, α-tocopherol, or both lead to a significant increase (P ≤ 0.05) in the parameters of final weight, total weight gain, daily growth rate, relative growth rate, specific growth rate, feed conversion ratio, feed efficiency ratio, protein retention, protein efficiency ratio and protein productive value compared to the control diet.

ПРОДУКТИВНЫЙ ПОТЕНЦИАЛ ВЫРАЩИВАЕМОГО МОЛОДНЯКА СВИНЕЙ ПРИ ОБОГАЩЕНИИ РАЦИОНОВ РАЗЛИЧНЫМИ СОЕДИНЕНИЯМИ СЕЛЕНА

To carry out scientific and economic experience, three groups of piglets-analogues at the age of 28 days (20 heads in each group) were selected, depending on the origin and live weight. The duration of the experiment was (62 days). According to the experimental scheme, the growing young pigs of the 1st control group as part of the SK-4 compound feed received 0.30 mg/kg of inorganic selenium feed in the form of sodium selenite, analogues from the 2nd and 3rd experimental groups received the same compound feed with the addition of 0.15 and 0.20 mg/kg of organic selenium, respectively. Feeding young pigs of the 2nd and 3rd experimental groups as part of the SK-4 compound feed of organic selenium in the amount of 0.15 and 0.20 mg/kg contributed to an increase in live weight and average daily gains at 60 and 90 days of age, respectively, by 7.46 g, 7.24 g and 12.3%, 12.1% and 8.4 g 8.3 g and 9.5%, 9.5% compared to control animals. The inclusion of various levels of organic selenium in the composition of the SK-4 compound feed contributed to an increase in the digestibility of all nutrients compared to the control. The inclusion of organic selenium in the growing young pigs of the experimental groups of 0.15 and 0.20 mg/kg of feed had a positive effect on the dynamics of morphological, biochemical, immunological parameters that cause an increase in the protective properties of the body. The greatest economic effect was obtained in the 2nd experimental group of piglets receiving 0.15 mg of B-Traxime Selenium per 1 kg of feed and amounted to 292.5 rubles per head.

A new selenium source from Se-enriched Cardamine violifolia improves growth performance, anti-oxidative capacity and meat quality in broilers.

BackgroundCardamine violifolia (Cv) is a kind of selenium-enriched plant which contains high levels of organic selenium (Se) such as selenocysteine and methylselenocysteine. This study was conducted to investigate the effects of this new source of Se on the growth performance, anti-oxidative capacity and meat quality in broilers compared with other frequently-used Se sources.MethodsA total of 240 broilers were allotted into 4 treatments: (1) Control group (Se free diets, CON); (2) Sodium selenite group (0.3 mg/kg Se sourced from Na2SeO3 diets, SeNa); (3) Selenium yeast group (0.3 mg/kg Se sourced from Se-Yeast diets, SeY); (4) Plant Se group (0.3 mg/kg Se sourced from Cv diets, SeCv). The whole study lasted 42 days and was divided into 2 stages (1–21 d as earlier stage and 22–42 d as later stage).ResultsThe results showed that the broilers fed SeCv diets had improved average daily gain and the ratio of feed to gain compared to the broilers fed SeNa and SeY diets during the earlier stage. However, there was no significant difference in growth performance of broilers fed these 3 sources of Se diets during the whole period. The broilers fed SeCv diets had improved intestinal mucosal morphology on d 21 and 42. Enhanced liver total anti-oxidative capacity was observed from the broilers fed SeCv diets compared with the other 2 Se sources diets on d 21. Furthermore, lower liver malondialdehyde contents were determined from the broilers fed SeCv and SeY diets compared with SeNa diets. At last, the broilers fed SeCv had increased redness in thigh muscle and decreased cooking loss in both breast and thigh muscle compared with the boilers fed SeNa diets. However, the broilers had similar meat quality between SeCv group and SeY group.ConclusionIn conclusion, these results demonstrated that SeCv was a well-organic Se source for broilers.

Nutraceutical effects of organic Selenium and vitamin E supplementation on performance, antioxidant protection and egg quality of Japanese quails (Coturnix japonica)

This study evaluated the nutraceutical effects of organic Selenium and vitamin E supplementation on performance, egg quality and antioxidant protection of Japanese quails. Forty-two posture cages with six birds each were randomly set in seven treatments. Each treatment consisted of the addition of 200 IU of vitamin E/kg of feed and increasing levels of organic Selenium. Significant differences were found in α-Tocopherol deposition, enzymatic activity of glutathione peroxidase (GSH-Px) and oxidative bioindicator malondialdehyde (MDA) in egg yolk with vitamin E supplementation. We concluded that supplementing 200mg of vitamin E and 0.30 ppm organic Selenium did not affect bird performance, but improved egg quality and shelf life. Highlights: This study evaluated the nutraceutical effects of organic selenium and vitamin E supplementation on egg quality of Japanese quails. Forty-two posture cages with six birds each were randomly set in seven treatments. Each treatment consisted of the addition of 200 IU of vitamin E/kg of feed and increasing levels of organic selenium. Supplementing 200mg of vitamin E and 0.30 ppm organic selenium did not affect bird performance, but improved egg quality and shelf life.

Influence of the Application of Organic Selenium in Duck Concentrate Mixtures on the Sensory Properties of Duck Meat

There are data in the literature on the influence of higher amounts of organic selenium on production results, and the obtained results indicate that high levels of organic selenium added to feed (even up to 15 mg / kg) of chickens did not have a negative effect on production results. Also, in the literature related to chicken nutrition there is data on the use of different forms (inorganic, organic) and different amounts of selenium on carcass meat, pH value of meat, ability to bind water, chemical parameters of meat quality, oxidative stability of meat, and and on the sensory properties of broiler meat. Of particular importance are the studies of the possibility of using increased amounts of organic selenium in poultry nutrition in order to enrich meat with selenium. This is of particular importance for the nutritional value of meat, and in connection with this, human health. The aim of this study was to investigate the effect of adding different amounts of organic selenium (ALKOSEL® R397) in concentrate mixtures on the sensory properties of meat streams.

Can Moderate Levels of Organic Selenium in Dairy Cow Feed Naturally Enrich Dairy Products?

Simple SummaryMilk and dairy products, such as cheese and yogurt, can be useful sources of selenium-enriched products to increase human Se intake. We studied the effect of dairy cow feed supplementation with inorganic plus organic Se on milk yield, and on the Se enrichment of milk and dairy products to obtain naturally enriched products. Two groups of lactating cows were assigned to two feeding treatments, both with 0.240 mg Se/kg of ration dry matter: One was supplemented with inorganic Se, the other with a 60/40 ratio of inorganic Se/organic Se. The results showed that the inclusion of inorganic plus organic Se did not affect the yield or basic chemical composition of milk; however, the Se content of milk was higher with inorganic plus organic Se supplementation. Cheese from cows fed inorganic plus organic Se had a higher Se content, although this effect was not observed for yogurt. At a moderate level in the diet, sodium selenite plus Se yeast may be more effective than only inorganic Se, increasing the Se concentration in milk and cheese.This work studied the effect of dairy cow ration supplementation with inorganic plus organic Se on metabolic status, milk yield, and the quality of milk and dairy products, especially its Se content. Twenty multiparous Holstein Friesian lactating cows were assigned to two feeding treatments. The cows were fed with 22.5 kg dry matter (DM) of total mixed ration (11.75 kg DM of forage plus 10.75 kg DM of concentrate) by head. There were two different concentrates with the same Se content (0.240 mg/kg of ration DM) but with different Se sources: The control (CON) was supplemented with inorganic Se (sodium selenite); and the other (IOSe) was supplemented with sodium selenite plus organic Se (Sel-Plex®), at 0.144 and 0.096 mg Se/kg of ration DM, respectively. The results indicated that, in general, the IOSe treatment did not modify the metabolic profile, and even decreased the total oxidant status (p < 0.05) and did not lead to a deterioration of quality and yield of milk. However, milk and cheese from IOSe had higher Se content (an increase of 29.7% and 38.2%, respectively) than CON (p < 0.01), but this effect was not observed in yogurt. In general, physical or sensorial parameters of cheeses did not show differences between treatments. Moderate inorganic plus organic Se supplementation may be more effective than inorganic Se, increasing the Se content in milk and cheese, without causing a deterioration in quality or productive parameters.

EFFECT OF ADDING TWO LEVELS OF ORGANIC SELENIUM AND SELENIUM NANOPARTICLES IN THE DIET ON THE BLOOD BIOCHEMICAL TRAITS AND LIPID PROFILE OF BROILER CHICKENS ROSS 308

This experiment was conducted at the poultry farm in the Animal Production Department at the College of Agriculture, Al-Qasim Green University, during the period from 31/1/2018 until 13/ 3 / 2018 the study was aimed to Effect of Adding Two Levels of Organic Selenium and Selenium Nanoparticles in the Diet on the Blood Biochemical Traits and lipid profile of Broiler Chickens Ross 308 using 225 broiler chicks with one day years old. It was randomly divided into five treatments with 45 birds per treatment whereas,. The treatments of the experiment were as follows: First treatment Without any addition, second and third treatment: Organic selenium was added to the feed 0.4, 0.5 mg / kg feed respectively and the fourth and fifth treatment: addition 0.4, 0.5 mg nano-selenium particles / kg feed .The experiment included a study of the following characteristics : total protein, albumin, globulin, ALT , AST , Glutathione peroxidase, cholesterol , Triglycerides , High-density lipoproteins, Low- density lipoproteins and Malondialdehyde .The results dicated The highest level of serum protein concentration (p &lt;0.05) was observed in the serum level of the third, fourth and fifth treatments broilers compared with the control treatment. The fourth and the fifth treatments were significantly improvement (p &lt; 0.05) in the level of concentration of serum globulin compared to the first treatment , the results of the study showed no significant differences between the experimental treatments in enzymatic activity (AST) and (ALT) in the serum, while the fourth and fifth treatments were significantly improvement (p &lt;0.05) in the concentration of Glutathione peroxidase compared to the first, second and third treatments. There was significance decrease (P &lt;0.05) in the concentration of cholesterol and triglycerides, as well as low-density lipoproteins and high levels of high-density lipoproteins in the serum of broiler compared to the first treatment . The second, fourth, and fifth treatments recorded a significant decrease (P &lt;0.05) in the level of Malondialdehyde compared to the first and the third treatments.

Effect of dietary organic selenium on survival, growth, antioxidation, immunity and gene expressions of selenoproteins in abalone Haliotis discus hannai

No studies have been focused on the inclusion of organic selenium in formulated feed of abalone when organic minerals are accepted by aquaculture feed industry. This experiment evaluated the effect of organic selenium on the growth, antioxidation, immunity and gene expressions of selenoproteins in abalone. Graded levels of organic selenium were included to the basal diet at 0.00, 0.15, 0.30 and 0.60 ppm providing 157.83, 322.51, 437.59 and 596.59 ug/kg of selenium in the diet. Accordingly, the diets were named as Se-0.00, Se-0.15, Se-0.30 and Se-0.60 respectively. Results had shown that survival rate, weight gain rate and shell length increase rate were lowest for Se-0.60 group (p < 0.05). The concentration of selenium in the whole body generally increased with increasing level of dietary organic selenium (p < 0.05). The enzyme activities related to antioxidation increased initially with low levels of dietary selenium and decreased with higher levels, with the highest value in Se-0.30 group (p < 0.05). The enzyme activities of immunity increased with the addition of dietary selenium. With the increase of dietary selenium, Myostain expression decreased initially and increased afterwards, with lowest value for Se-0.30 group (p < 0.05). However, the expressions of other genes related to growth, antioxidation and selenoproteins firstly increased and then decreased, with the highest value recorded for Se-0.15 group. In conclusion, the inclusion rate of 0.15 – 0.30 ppm Se in diet could promote growth, antioxidation, immunity and gene expressions of selenoproteins in abalone; however, excess selenium with 0.60 ppm inclusion lever in diet had toxic effects.

Production of Selenomethionine-Enriched Bifidobacterium bifidum BGN4 via Sodium Selenite Biocatalysis.

Selenium is a trace element essential for human health that has received considerable attention due to its nutritional value. Selenium’s bioactivity and toxicity are closely related to its chemical form, and several studies have suggested that the organic form of selenium (i.e., selenomethionine) is more bioavailable and less toxic than its inorganic form (i.e., sodium selenite). Probiotics, especially Bifidobacteriium and Lactobacillus spp., have received increasing attention in recent years, due to their intestinal microbial balancing effects and nutraceutical benefits. Recently, the bioconversion (a.k.a biotransformation) of various bioactive molecules (e.g., minerals, primary and secondary metabolites) using probiotics has been investigated to improve substrate biofunctional properties. However, there have been few reports of inorganic selenium conversion into its organic form using Bifidobacterium and Lactobacillus spp. Here we report that the biosynthesis of organic selenium was accomplished using the whole cell bioconversion of sodium selenite under controlled Bifidobacterium bifidum BGN4 culture conditions. The total amount of organic and inorganic selenium was quantified using an inductively coupled plasma-atomic emission spectrometer (ICP-AES). The selenium species were separated via anion-exchange chromatography and analyzed with inductively coupled plasma-mass spectrometry (ICP-MS). Our findings indicated that the maximum level of organic selenium was 207.5 µg/g in selenium-enriched B. bifidum BGN4. Selenomethionine was the main organic selenium in selenium-enriched B. bifidum BGN4 (169.6 µg/g). Considering that B. bifidum BGN4 is a commercial probiotic strain used in the functional food industry with clinically proven beneficial effects, selenium-enriched B. bifidum BGN4 has the potential to provide dual healthy functions as a daily supplement of selenium and regulator of intestinal bacteria. This is the first report on the production of organic selenium using B. bifidum spp.

Effects of different selenium sources and levels on antioxidant status in broiler breeders.

ObjectiveThis study was conducted with the objectives to examine the impacts of inorganic selenium (Se) and different types and levels of organic selenium on the serum and tissues Se status and antioxidant capacity in broiler breeders.MethodsFive hundred and forty 48-wk-old Lingnan Yellow broiler breeders were randomly assigned to 6 dietary treatments, provided same basal diet (0.04 mg/kg of Se) with 0.15 mg/kg, or 0.30 mg/kg of Se from sodium selenite (SS) or from selenium-enriched yeast (SY) or from selenomethionine (SM). The broiler breeders were slaughtered after an 8-wk experiment.ResultsThe results showed that SM was better than SY and SS, 0.30 mg/kg level was better than 0.15 mg/kg level in Se deposition (p<0.05) in serum, liver, kidney, pancreas and muscle; in antioxidant status, organic selenium had better effects than SS in broiler breeders (p<0.05), but SM and SY had a similar result, and 0.15 mg/kg level was better than 0.30 mg/kg (p<0.05).ConclusionThe results demonstrated the evident advantage of supplementation of broiler breeders with 0.15 mg/kg SM, which improved tissue Se concentrations and antioxidant status, and can be considered as the best selenium source.

Total Phenolic Contents and Antioxidant Activities of Selenium-Rich Black Tea Versus Regular Black Tea

Two black aqueous tea extracts of Camellia sinensis, (selenium-rich black tea (Se-BTE) and regular black tea (R-BTE)) were assessed for their total phenolic content (TPC) and antioxidant properties. Aqueous tea extracts were prepared using different extraction temperature and time. TPC was measured using the Folin-Ciocalteu method, while antioxidant activity was measured by ferric-reducing antioxidant power (FRAP) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) assays. The R-BTE showed significantly higher TPC (P &lt; 0.05) and antioxidant activity (P &lt; 0.05) than the Se-BTE, which may be due to these being different cultivars, or differences in growing conditions. Our findings demonstrate that both extraction temperature and time are important determinants of extracted TPC and antioxidant activities of these teas. In addition and in contrary to our expectations, the high level of organic selenium in black tea did not enhance the antioxidant activity when compared with black tea containing very low level of organic selenium. Other elements and minerals may contribute to the high antioxidant activity detected in the regular black tea.

Effects of increasing dietary organic selenium levels on meat fatty acid composition and oxidative stability in growing rabbits

The effects of dietary organic selenium (Se) addition at 0.1, 0.5 and 2.5mg/kg vs. an unsupplemented basal diet (BD) on performance, fatty acid (FA) composition and oxidative stability were studied in muscle tissue of growing rabbits. Muscle Se content increased (P<0.001) in a dose dependent manner with dietary Se inclusion. Saturated FA (SFA) were affected linearly (P<0.05) and quadratically (P<0.05) by dietary Se addition. Polyunsaturated FA (PUFA) increased linearly (P<0.01) resulting in a linear increase in the PUFA:SFA ratio (P<0.01) with dietary Se increment. Feeding 0.5mgSe/kg diet reduced malondialdehyde (MDA) and oxygen radical absorbance capacity (ORAC) values in the muscle, whilst 2.5mgSe/kg diet increased MDA concentrations and tended to increase ORAC values, likely indicating oxidative stress. In conclusion, dietary Se supplementation at 0.5mg/kg improves meat FA composition and oxidative stability, whereas at 2.5mg/kg may induce pro-oxidant effects.

Effect of Supplementing Different Levels of Organic Selenium &amp; Inorganic Selenium to Broiler Breeder Diet on Production Performance, Selenium Concentration in Plasma and Egg

Effect of Supplementing Different Levels of Organic Selenium &amp; Inorganic Selenium to Broiler Breeder Diet on Production Performance, Selenium Concentration in Plasma and Egg

Effect of dietary supplementation of organic selenium and vitamin E on growth performance, carcass characteristics and meat quality of broiler chickens

Present study was conducted in a 3 × 2 factorial arrangement of 3 levels of organic selenium (0, 0.1, and 0.2 ppm) and 2 levels of vitamin E (0 and 300 mg/kg) to determine the effect of organic selenium and vitamin E on growth performance, carcass characteristics and meat quality in broiler chickens. Day-old Vencobb broiler chicks (180) were randomly divided into 6 treatments (3 replicates of 10 birds/treatment). The diets were formulated according to BIS (1992). The diet was based on corn soybean meal. Study revealed significant interaction in between organic selenium and vitamin E for feed intake, body weight, FCR, dressing percentage and protein and lipid content of muscle. The broilers receiving 0.1 ppm organic selenium with 300 mg/kg vitamin E (T4) displayed heavier final weight and improved FCR. The highest dressing percentage was determined in the similar group (T4). As the level of vitamin E increased in the broilers diet, protein percentage of breast and thigh muscle significantly increased whereas, lipid percentage significantly decreased. Lowest muscle lipid and highest protein percentage obtained in broilers receiving 0.1 ppm organic selenium with 300 mg/kg vitamin E (T4). It can be concluded that dietary organic selenium with vitamin E in broiler feed improved the growth performance and gave the possibility for achievement of better quality meat and higher meat yield.

Selenium speciation in human serum and its implications for epidemiologic research: a cross-sectional study

Observational studies addressing the relation between selenium and human health, particularly cancer risk, yielded inconsistent results, while most recent randomized trials showed a fairly consistent pattern suggesting null or adverse effects of the metalloid. One of the most plausible explanations for such inconsistencies is inadequate exposure assessment in observational studies, commonly carried out by measuring total Se content without taking into account the specific exposure to the individual chemical forms of the metalloid, whose toxic and nutritional properties may vary greatly. Data on the distribution of these species in human blood and their correlation with overall selenium levels are very limited.The concentrations of organic and inorganic selenium species were analyzed in serum of fifty subjects sampled from the general population of the municipality of Modena, northern Italy, aged from 35 to 70 years. Samples were collected during a 30-month period, and determinations of selenium species were carried out using high pressure liquid chromatography coupled with inductively coupled plasma dynamic reaction cell mass spectrometry.The majority of selenium was found to be present as organic species, but the inorganic forms showed higher levels than expected. These species showed limited correlations with age, sex and body mass index, while the organic forms increased in subjects consuming selenium-containing dietary supplements and decreased in smokers. The length of the sample storage period strongly influenced the distribution of selenium compounds, with a clear tendency towards higher inorganic and lower organic selenium levels over time. In multivariate analysis adjusting for potential confounders, total serum selenium correlated with human serum albumin-bound selenium and, in males, with two organic species of the metalloid (selenocysteine and glutathione peroxidase-bound selenium), while little association existed with the other organic forms and the inorganic ones.These findings highlight the potential for exposure misclassification of observational epidemiologic investigations based on overall selenium content in blood and possibly other tissues, and the critical role of the storage conditions for speciation analysis.

Effect of Organic Selenium and Vitamin E Supplementation on Physico-chemical Characteristics of Broiler Meat

Present study was conducted to investigate the effect of organic selenium and vitamin E on physico-chemical characteristics of broiler meat. This study was a 3 x 2 factorial arrangement of three levels of organic selenium (0, 0.1, and 0.2 ppm) and two levels of vitamin-E (0 and 300mg/kg). Day-old Vencobb broiler chicks (n=180), were randomly assigned in 6 treatment groups. The experiment lasted for 35 days. The six different dietary treatments were: T1- Control diet without organic selenium and vitamin E; T2- 300mg/kg vitamin E; T3- 0.1ppm organic selenium; T4- 0.1ppm organic selenium and 300mg/kg vitamin E; T50.2ppm organic selenium and T6- 0.2ppm organic selenium and 300mg/kg vitamin E. Supplementation of organic selenium and vitamin E had no significant effect on pH of broiler meat. Extract release volume (ERV) and water holding capacity (WHC) were significantly (P<0.01) increased in organic selenium and vitamin-E supplemented groups as compared to control and was recorded highest in birds fed 0.1ppm organic selenium with 300mg/kg vitamin-E. Significantly (P<0.01) decreased level of thiobarbituric acid (TBA) and tyrosine value (TV) were observed in birds fed organic selenium and vitamin-E as compared to control and was least in birds fed 0.1ppm organic selenium with 300mg/kg vitamin-E. There was marked interaction between organic selenium and vitamin E for ERV, WHC, TBA and TV (P<0.01) however it was non-significant for pH. Supplementation of organic selenium and vitamin E reduces the lipid peroxidation and autolysis, thus improves the shelf life of broiler meat.

Status of selenium and correlation with blood GSH-Px in goats and their kids in organic breeding fed with different levels of organic selenium

Abstract. The aim of this research was to determine how the supplement of organic selenium in the diet at different concentrations reflects on the content of blood Se and GSH-Px activity and their correlation in goats and their kids in organic breeding. The study included 24 Alpine goat breeds during lactation and their kids. Goats were divided into three groups depending on dietary treatments. Goats were fed with the cereals mixture 1 kg/per day in control group (C). Organic selenium supplied as selenised yeast in the first experimental group (E-I) 0.015 % and in the second experimental group (E-II) 0.030 % in cereals mixture. The addition of organic selenium significantly (P&lt;0.01) increased blood Se of goats and kids in E-I and E-II groups in relation to C group and higher (P&lt;0.05) in E-II in comparison with the E-I group. Concentrations of Se followed by GSH-Px activity, and were higher in the EI and E-II groups in comparison with C group. In the blood of suckling kids has determined higher (P&lt;0.01) GSH-Px activity in E-I and E-II groups in relation to C group. It was also determined higher GSH-Px in the blood of kids E-II group compared to the EI group. Significant correlations was found between Se levels and GSH-Px activity in goats and kids, but were significant only in the goats of E-II group. The results obtained concentration of Se and GSH-Px in the blood goats and kids showed the validity of adding prganic selenium into food in organic breeding.

Growth and gut health in chickens on diets varying in fatty acid composition and selenium content

Chicken feed composition is essential to chicken health and meat composition. Fatty acids of the n-6 and n-3 families and selenium are of high importance to inflammatory processes. The effect of varying chicken dietary compositions in saturated and unsaturated oil sources with varying n-6 and n-3 levels combined with two levels of organic selenium on chicken growth, gizzard and gut health was studied.Wheat-based chicken diets supplemented with either 0.1 mg Se/kg feed or 1.0 mg Se/kg feed in combinations with rendered fat, soybean oil, rapeseed oil, linseed oil, palm oil, and red palm oil were used.Altering the fatty acid profile and selenium level did not significantly affect gizzard or gut health in broiler chickens, but increased early growth in chickens was seen for the red palm oil, linseed oil, and high selenium groups. Increased selenium levels lead to fewer incidences of loose digesta and higher gizzard weights.