Effects of selenium supplementation as sodium selenite or selenized yeast and different amounts of vitamin E on selenium and vitamin E status of broilers (original) (raw)
Related papers
Poultry science, 2018
The present study was conducted to assess effects of selenium (Se)-yeast supplementation on glutathione peroxidase activity, Se levels in tissues, growth performance, carcass, and meat composition in broilers. A total of 275 one-d-old Cobb 500 broilers of both sexes were randomly allotted to 1 of 5 treatments during a 42-d period. The 5 treatments differed only in Se content: group 1 had no additional Se (background only); groups 2, 3, and 4 received 0.3 mg/kg of added Se from the beginning of the trial until d 21, whereas in the second half of the study (from d 22 to 42), these groups received 0.3, 0.6, and 0.9 mg/kg of added Se, respectively; and group 5 received 0.9 mg/kg of Se for the entire experimental period. At the end of the study, the control group showed significantly lower (P < 0.01) glutathione peroxidase activity in blood plasma compared to Se-supplemented groups. Regarding Se concentration in various tissues, the groups receiving Se yeast showed higher plasma, fece...
Chicken Selenium Status when Fed a Diet Supplemented with Se-Yeast
Acta Veterinaria Brno, 2003
This experiment was designed to investigate the effects of the feed supplementation with inorganic and organic forms of Se on the activity of blood glutathione peroxidase (GSH-Px) and the Se levels in blood and tissues in young female chickens of the laying strain Isa Brown. The first group of birds received the basic diet (BD) with Se content 0.12 mg. kg-1 of dry matter (DM). Diets for Groups 1, 2 and 3 consisted of BD supplemented with sodium selenite 0.2 mg•kg-1 of DM, Se-enriched yeast 0.2 and 0.7 mg•kg-1 of DM, respectively. The experiment lasted from hatching until 7 weeks of age. The activity of blood GSH-Px was found to be dose-dependent throughout the experiment with no differences due to the form of Se administered. The selenium analysis in blood and liver samples revealed also the Se dose dependent responses but with significantly higher values recorded in chickens aged 5 weeks and older chickens and supplied with the equivalent amounts of organic Se source. Other tissue Se levels were also highest (P < 0.05) in the group with its largest intake. The values of Se content in the breast muscle were higher (P < 0.001) in chicks of Group 3 during entire experiment and they reached the doubled values than in the birds given selenite (11.54 ± 0.4 vs. 5.47 ± 0.2 µmol•kg-1 of DM, in 7-weekold birds). On the other hand, no differences in this parameter were determined between the chicks fed just BD or BD supplemented with Na 2 SeO 3. At the end of experiment, the intake of Se-yeast (Group 3) resulted in significantly (P < 0.05) higher Se levels in the heart, in lungs and in the gizzard than BD with selenite. No effects of the form of selenium used could be found in the spleen and kidney samples of 7-week-old chicks. The results demonstrate the evident advantage of supplementation of poultry feed with the selenium-enriched yeast due to more effective Se utilization and formation of mobile body deposits of this microelement than in the case of supplementation with selenite.
Biological Trace Element Research
This study was conducted to investigate the effects of different sources of dietary selenium (Se) supplementation on growth performance, meat quality, Se deposition, and antioxidant property in broilers. A total of 600 one-day-old Ross 308 broilers with an average body weight (BW) of 44.30 ± 0.49 g were randomly allotted to three treatments, each of which included five replicates of 40 birds. These three groups received the same basal diet containing 0.04 mg Se/kg, supplemented with 0.15 mg Se/kg from sodium selenite (SS) or from l-selenomethionine (l-Se-methionine (Met)) or from d-selenomethionine (d-Se-Met). The experiment lasted 42 days. Both Se source and time significantly influenced (p < 0.01) drip loss of breast muscle. Supplementation with l-Se-Met and d-Se-Met were more effective (p < 0.05) in decreasing drip loss than SS. Besides, the pH value of breast muscle was also significantly influenced (p < 0.05) by time. The SS-supplemented diet increased more (p < 0.05) liver, kidney, and pancreas glutathione peroxidase (GSH-Px) activities than the d-Se-Met-supplemented diet. In addition, l-Se-Met increased more (p < 0.01) liver and pancreas GSH-Px activities than d-Se-Met. The antioxidant status was greatly improved in broilers of l-Se-Met-treated group in comparison with the SS-treated group and was illuminated by the increased glutathione (GSH) concentration in serum, liver, and breast muscle (p < 0.05); superoxide dismutase (SOD) activity in liver (p < 0.01); total antioxidant capability (T-AOC) in kidney, pancreas, and breast muscle (p < 0.05) and decreased malondialdehyde (MDA) concentration in kidney and breast muscle (p < 0.05) of broilers. Besides, supplementation with d-Se-Met was more effective (p < 0.01) in increasing serum GSH concentration and decreasing breast muscle MDA concentration than SS. l-Selenomethionine supplementation significantly increased GSH concentration in liver and breast muscle (p < 0.05); SOD activity in liver (p < 0.01); and T-AOC in liver, pancreas, and breast muscle (p < 0.05) of broilers, compared with broilers fed d-Se-Met diet. The addition of l-Se-Met and d-Se-Met increased (p < 0.01) Se concentration in serum and different organs studied of broilers in comparision with broilers fed SS diet. Therefore, dietary l-Se-Met and d-Se-Met supplementation could improve antioxidant capability and Se deposition in serum and tissues and reduce drip loss of breast muscle in broilers compared with SS. Besides, l-Se-Met is more effective than d-Se-Met in improving antioxidant status in broilers.
Animal Feed Science and Technology, 2015
The aim of this study was to assess how dietary supplementation of organic selenium affected carcass and meat quality, tissue selenium content and glutathione peroxidase activity in ducks. The study was performed on 240 one-day old ducklings of the same origin (Cherry Valley hybrid), during a 49-day period, that were fed diets supplemented with four different levels of selenium yeast (ALKOSEL ® R397): groups with 0 mg/kg, 0.2 mg/kg, 0.4 mg/kg and 0.6 mg/kg added Se. Live weight, carcass characteristics, meat quality characteristics, chemical composition of meat, selenium content in plasma, feces, liver and meat, as well as plasma glutathione peroxidase activity were determined. Animals fed high Se diets (0.4 mg/kg) had higher live weight (P < 0.05) compared to those fed diets with inadequate (0 mg/kg) or with supranutritional (0.6 mg/kg) Se levels. Chemical analysis of meat revealed differences in moisture, protein and lipid content among compared groups. Breast meat from the group with the highest dietary Se (0.6 mg/kg) had a higher protein content (P < 0.01) compared to breast meat from groups with 0 mg/kg and 0.2 mg/kg added Se. Se supplementation increased significantly Se levels in plasma, liver and muscles, as well as activity of glutathione peroxidase in plasma.
Egyptian Poultry Science Journal, 2018
The purpose of this investigation was to study effects of using seleniumenriched yeast on productive performance, carcass composition, Se deposition in meat, some blood constituents and antioxidant activity of broiler chickens. One hundred fifty chicks of commercial broiler strain were divided into five groups, each group comprised five replicates (6 birds per replicate). The groups received a basal diet complemented with 0.2 (control), 0.3, 0.4, 0.5, or 0.6 ppm selenium (Se)/ kg diet. The experiment continued from one-day-old to five weeks of age. Data obtained illustrated that dietary treatments had insignificant effect on growth performance. Selenium (Se) concentration in breast muscles was increased by increasing Se-enriched yeast level in the diet, where the highest content of Se was in birds fed diet supplemented with 0.6 ppm Se/ kg (being 0.48 ppm /kg). Also, supplementing broiler diets with Se-enriched yeast resulted in higher activities of catalase (CAT), glutathione peroxidase (GPx) and superoxide dismutase (SOD) than in control group. Conversely, plasma malondialdehyde (MDA) levels were significantly declined by increasing dietary Se levels. Concerning total antioxidant capacity (TAC) levels, groups received 0.3 and 0.4 ppm Se/ kg diet appeared significantly similar to control group. Levels of triglyceride (TG), total cholesterol (TC), as well as low-density lipoprotein (LDL-C) in plasma were decreased in all treated groups compared to control group. In conclusion, complementing broiler diets with Se-enriched yeast might be recommended to improve the antioxidant status and blood lipid profile.
Effects of selenium and vitamin E supplementation on selenium distribution and meat quality of pigs
Acta Agriculturae Scandinavica, Section A — Animal Science, 2013
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animal, 2011
The objective of this study was to determine the concentration of total selenium (Se) and proportions of total Se comprised as selenomethionine (SeMet) and selenocysteine (SeCys) in the tissues of female turkeys offered diets containing graded additions of selenized-enriched yeast (SY), or sodium selenite (SS). Oxidative stability and tissue glutathione peroxidase (GSH-Px) activity of breast and thigh muscle were assessed at 0 and 10 dayspost mortem. A total of 216 female turkey poults were enrolled in the study. A total of 24 birds were euthanized at the start of the study and samples of blood, breast, thigh, heart, liver, kidney and gizzard were collected for determination of total Se. Remaining birds were blocked by live weight and randomly allocated to one of four dietary treatments (n= 48 birds/treatment) that differed either in Se source (SYv.SS) or dose (Con [0.2 mg/kg total Se], SY-L and SS-L [0.3 mg/kg total Se as SY and SS, respectively] and SY-H [0.45 mg total Se/kg]). Fo...
AFRICAN JOURNAL OF BIOTECHNOLOGY, 2012
Ninety-six thousand one-day-old AA broilers were randomly assigned to two groups, 5 replicates in each group, and 9,600 chickens for each replicate. In the control group, 0.3 part per million (ppm) inorganic selenium (Na 2 SeO 3 ) was added to the diets; while in the experimental group, 0.3 ppm organic selenium (Se-enriched yeast) was added to the same basal diets. The feeding experimental period was 42 days. The results show that: (1) Organic selenium could increase daily weight gain and feed intake by 8.92 (P<0.05) and 3.99% (P<0.05), and decrease survival rate and feed conversion by 0.93 (P<0.05) and 4.84% (P<0.05), indicating that the effects of organic selenium on broiler growth performance were better than that of inorganic selenium, except for survival rate.
Menoufia Journal of Animal Poultry and Fish Production
An experiment was designed to investigate the effects of dietary selenium on performance, carcass traits, blood biochemicals, tissues selenium deposition, antioxidant activity and immunoglobulin of broiler chicks. Total of 210 day old broilrer chicks were divided into seven dietary treatment groups with three replicates each. Control group (T 1) was fed with basal diet contain the recommended level of selenium of Arbor-Acres broiler chicks cataloge, as a source of inorganic selenium. Experimental groups; T 2 , T 3 and T 4 were given basal diet free of selenium, but supplemented with 0.1, 0.2 and 0.3 g selenium yeast/ kg diet, T 5 , T 6 and T 7 were fed basal diet free of Se and supplemented with 0.01, 0.02 and 0.03 g nano-selenium/ kg diet, respectively. Results showed that chicks fed diet supplemented with 0.03g nano-selenium/ kg diet (T 7) had significantly (P ≤ 0.05) the highest values of daily weight and improved feed conversion ratio compared to the other treatments which also recorded the least feed intake. Se-yeast or nano-selenium showed higher some carcass traits, liver meat of breast and thigh Se contents and high density lipoprotein, while low density lipoprotein, concentrations were significantly (P ≤ 0.05) decreased. Activity of glutathione peroxidase, in serum blood was significantly (P ≤ 0.05) increased by supplementation of 0.03 g nano-selenium/ kg diet compared to the control group and other treatments. Also, chicks fed diet supplemented with 0.03 g nano-selenium/ kg diet had the highest livability rate (98%) and the best European efficiency rate (443.5%) but it was less economically efficient and relatively economic efficiency may have been due to the high price of nanoselenium at the present time compared to organic selenium. So, the obtained results in the present study encouraging and indicated that 0.3 g selenium yeast/ kg diet (T 4) can be used in broiler chicken diets to get best economic efficiency and higher relative economic efficiency. It could be concluded that addition of organic and nano-selenium in broiler diets positively affects production performance and various parameters of broilers health.
2014
The trial was conducted to evaluate the effects of selenite and vitamin E included in combined feed on growth performance, feed conversion and mortality, pH of gastrointestinal tract chymus, amount of dry matters and short-chain fatty acids in caecum chymus of broiler chickens. The experiment was carried out in the experimental poultry house of „Vilniaus paukštynas“ and poultry house of LUHS Veterinary Academy in 2011. Six hundred Cobb 500 cockerels were divided into three treatment groups. Group I was control and groups II and III were experimental. Broiler chickens of the control group were fed the diet supplemented with 0.15 mg of sodium selenite (inorganic selenium) and 40 mg of vitamin E throughout the whole period of the trial (from the 1 to the 35 day of broiler chicken growth). The feed for broiler chickens of the experimental group II included 0.5 mg sodium selenite (inorganic selenium) and 40 mg of vitamin E throughout the whole period of the trial (from the 1 to the 35 da...