Comparative effects of various dietary levels of Se as sodium selenite or Se yeast on blood, wool, and tissue Se concentrations of wether sheep

Davis, Philip A.; Lr, McDowell; Wilkinson, N. S.; Buergelt, C. D.; Alstyne, R. Van; Weldon, Richard N.; Marshall, T. T.; Matsuda-Fugisaki, E.Y.

doi:10.1016/j.smallrumres.2007.05.003

Cited by 38 publications

(26 citation statements)

References 29 publications

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“…We also analyzed the Se concentration in blood plasma and testis and the effect of dietary Se on antioxidant status in the testis was investigated. It has been shown in several species that Se supplementation significantly increases blood or tissue Se levels (Kim and Mahan, 2001;Davis et al, 2008;Brennan et al, 2011) and in the present study a similar increase was also observed when the dietary Se level was progressively increased from the control to 2.0 mg/kg. Accumulating evidence indicates that both experimental and clinical Se deficiency result in decreased GSH-Px activity (Surai, 2000;Utterback et al, 2005;Zhang et al, 2012).…”

Section: Discussionsupporting

confidence: 87%

Effects of different levels of dietary selenium on the proliferation of spermatogonial stem cells and antioxidant status in testis of roosters

Shi

Zhao

Ren

et al. 2014

Animal Reproduction Science

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Section: Discussionsupporting

confidence: 87%

Effects of different levels of dietary selenium on the proliferation of spermatogonial stem cells and antioxidant status in testis of roosters

Shi

Zhao

Ren

et al. 2014

Animal Reproduction Science

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“…In our research, we also determined a significant decrease (P < 0.05) of cholesterol and triglyceride level in group 3 of the lactating ewes. A similar concentration of albumin in the serum of sheep, as well as in this study, was found by Davis et al (2007) upon the addition of 0.2 mg/kg selenium as sodium selenite and selenium yeast. The same authors found that sodium selenite significantly increased (P < 0.05) the concentration of albumin.…”

Section: Biochemical Indicatorssupporting

confidence: 89%

Blood biochemical indicators and concentration of thyroid hormones in heavily pregnant and lactating ewes depending on selenium supplementation

et al. 2017

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The aim of this research was to determine the effect of dietary selenium supplementation (organic and inorganic) on the biochemical indices and thyroid hormone concentration in the blood of heavily pregnant and lactating ewes. Research was conducted on 30 pregnant ewes of the Merinolandschaf breed divided into 3 groups, and lasted for four months (two months on ewes in late pregnancy and two months on ewes during lactation). The first group was given a basal diet without the addition of selenium. The feed mixture of group 2 was supplemented with 0.3 mg/kg of organic sources of selenium, and group 3 with the same amount of inorganic sources of selenium. In lactating ewes, organic and inorganic selenium lead to a significant (P < 0.05; P < 0.01) increase in urea concentration. At the same time, in lactating ewes inorganic selenium had a significant decreasing effect (P < 0.05; P < 0.01) on cholesterol, lowdensity lipoprotein and triglycerides. Organic selenium in heavily pregnant ewes significantly (P < 0.01) increased aspartate aminotransferase activity in comparison to group 1 and 3. In lactating ewes significant (P < 0.05) differences in aspartate aminotransferase activity were determined between groups 2 and 3. With selenium supplementation a significant (P < 0.01; P < 0.05) increase concentration of Se was determined (for heavily pregnant and lactating ewes, respectively), as well as Na, Cl, Fe (lactating ewes), and a decrease of K (high pregnant ewes). Organic selenium had an effect on the increase of triiodothyronine in lactating ewes. We can conclude that selenium supplementation contributes to good health and condition of ewes in the demanding period of lactation.

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“…Monterrosa et al (2011), who compared the effect of supplementation of selenium products on the digestive function of lambs, did not find any differences in selenium absorption and digestibility between animals receiving sodium selenite or selenomethionine. On the contrary, Rock et al (2001) in lambs and Davis et al (2008) in wethers observed higher concentrations of Se in experimental groups receiving Se-yeast (i.e. organic selenium).…”

Section: Blood Parametersmentioning

confidence: 80%

“…The form of supplementation of microelements is generally considered as an important factor. Organic forms are usually reported to be more efficient and having higher biological effect (Rabianski et al, 1998;Pavlata et al, 2001aPavlata et al, , 2011aKuricová et al, 2003;Davis et al, 2008;Pechova et al, 2008;Skřivan et al, 2010;Sevcikova et al, 2011;Wang et al, 2011). However, other studies did not prove this finding and, on the contrary, their authors observed equivalent or even better efficiency of inorganic compounds (Leeson et al, 2008;Heindl et al, 2010;Pavlata et al, 2011bPavlata et al, , 2012a.…”

mentioning

confidence: 96%

Effect of supplementation of various selenium forms and doses on selected parameters of ruminal fluid and blood in sheep

Panev¹,

Hauptmanová²,

Pavlata³

et al. 2013

Czech J. Anim. Sci.

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Effect of various doses and forms of selenium (organically bound vs. inorganic) on selected parameters of ruminal fluid and blood in sheep was evaluated. The trial was performed with 15 sheep divided into two groups. Animals from group A (n = 8) received a feeding mixture with selenomethionine, while sheep from group B (n = 7) were fed a mixture with sodium selenite. During the first 14 days, animals from both groups were fed a mixture with optimum dose of selenium (1 mg Se/kg dry matter). For another 28 days, all experimental animals received a Se-deficient mixture (0.1 mg Se/kg dry matter), whereas in the last 21 days of the experiment, animals were fed a high-Se diet (5.0 mg Se/kg dry matter). Throughout the trial, 4 samples of blood and ruminal fluid were taken from each animal. The samples of ruminal fluid were analyzed to determine the concentration of Se and identify other parameters of ruminal fermentations. Selenium levels were also determined in ruminal biomass. In blood, Se concentration, glutathione peroxidase (GSH-Px) activity, and other selected biochemical parameters were measured. The results of the present study demonstrate that the actual intake of both organic and inorganic Se is reflected in Se concentration in ruminal fluid and ruminal biomass and, similarly, in Se content and GSH-Px activity in blood. The form of supplemented selenium did not have a significant effect on ruminal fermentation parameters in dependence on different doses of Se contained in feeding rations (except for the negative effect of a sudden start of feeding high levels of organically bound Se on infusoria count, which was accompanied by the increase of GMT, LDH, and AST enzymes activity in ruminal fluid). The results also suggest possible negative interaction between the intake of organically bound selenium and the concentration of copper in blood of sheep.

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Comparative effects of various dietary levels of Se as sodium selenite or Se yeast on blood, wool, and tissue Se concentrations of wether sheep

Cited by 38 publications

References 29 publications

Effects of different levels of dietary selenium on the proliferation of spermatogonial stem cells and antioxidant status in testis of roosters

Effects of different levels of dietary selenium on the proliferation of spermatogonial stem cells and antioxidant status in testis of roosters

Blood biochemical indicators and concentration of thyroid hormones in heavily pregnant and lactating ewes depending on selenium supplementation

Effect of supplementation of various selenium forms and doses on selected parameters of ruminal fluid and blood in sheep

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