Iodine status in ewes with the intake of iodine enriched alga Chlorella

Trávníček, Jan; Kroupová, V.; Konečný, Roman; Staňková, Martina; Šťastná, Jitka; Hasoňová, Lucie; Mikulová, M.

doi:10.17221/40/2009-cjas

Cited by 7 publications

(3 citation statements)

References 16 publications

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“…(2011) found similar results in Merino sheep in Australia. I in the blood serum of ewes decreased at lambing, as previously reported by Trávníček et al. (2010), probably because of a large transfer of I from the blood serum to mammary glands and milk (Anke, 2004).…”

Section: Resultssupporting

confidence: 74%

Se and I status in pregnant ewes from a pastoral system and the effect of supplementation with Se and I or only Se on wool quality of lambs

Guerra

Cabrera

Abella

et al. 2019

Heliyon

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Australian Merino ewes and lambs producing fine fibre wool for export are raised in the north-west of Uruguay in pasture-based systems. We studied the status of selenium and iodine in pregnant Merino ewes (10 per treatment) grazing in natural pasture, in natural pasture and supplemented with Se (0.1 mg Se/kg dry matter intake) and I (1 mg I/kg dry matter intake), or in natural pasture and supplemented with Se alone (0.1 mg Se/kg dry matter intake), during the last 30 days of gestation. Further, we evaluated the performance and wool quality of their offspring. Content of Se and I in natural pasture, in the sera of pregnant ewes, and in the wool of their offspring and levels of thyroidal hormones—TSH, T4, and free T3 (FT3)—in the sera of pregnant ewes were determined. The performance of lambs and the commercial parameters of fine fibre wool produced were measured. Results showed normal Se levels in serum (0.12–0.15 mg/l) in the ewes grazing in natural pasture (0.07–0.09 mg/kg DM) during late pregnancy. The observed increase in Se content in the pasture at lambing (0.11–0.16 mg/kg DM) improved serum Se levels (0.216 mg/l); however, the serum levels were not affected by the supplementation.I content in pasture showed adequate levels (0.50–0.60 mg/kg DM), which were reflected in the blood serum values 30 days prior to lambing (0.197–0.208 mg/l). However, at lambing, the I content in blood serum decreased (0.150 mg/l). Further, the supplementation did not modify the serum I levels (0.163–0.175 mg/l). An increase in FT3 levels in ewes at lambing could be associated with the increase in Se content in pasture and/or the adequate I content in pasture. No effect of supplementation was observed. Lambs showed good results regarding the quality of fine fibre wool and performance after supplementation with Se and I or Se alone and exhibited slightly improved Se and I content in wool. In conclusion, natural pasture provides adequate status in Se and I for the Merino ewes and their offspring without any additional beneficial effects of supplementation with Se and I or only Se.

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Section: Resultssupporting

confidence: 74%

Se and I status in pregnant ewes from a pastoral system and the effect of supplementation with Se and I or only Se on wool quality of lambs

Guerra

Cabrera

Abella

et al. 2019

Heliyon

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“…vulgaris has selenium and iodine in enough quantities, which play important roles in human and animal health due to their effect on the formation of glutathione-peroxidase that is important for buffering the destructive effect of peroxidation reactions on living cells (Rayman, 2000). Moreover, both of these elements are important for the production of thyroid hormones, which regulate metabolism level in the tissues of virtually all mammals (Trávníček et al, 2010). Such content of minerals and vitamins makes C. vulgaris an excellent source of essential micronutrients.…”

Section: Vitamins and Mineralsmentioning

confidence: 99%

Chlorella vulgaris microalgae in Ruminant Nutrition: a Review of the Chemical Composition and Nutritive Value

Kholif

Olafadehan

2021

Annals of Animal Science

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Recently, microalgae, natural marine resources, have gained increasing interests as a feed for animals. Chlorella vulgaris microalgae are single-cell microorganisms that have been used to provide nutrition to humans and animals for centuries. In the present review, we unveil the composition and nutritive value of C. vulgaris microalgae as a feed for ruminants. Research has shown that inclusion of C. vulgaris microalgae in diets improved feed utilization, milk production and quality, growth performance, and meat quality in ruminants, as a result of improved diet nutritive value leading to improved feed utilization. Very low doses of C. vulgaris in feed enhance growth and lactational performance of ruminants. Additionally, C. vulgaris showed very promising results as an alternative to corn and soybean meal; however, it is an expensive protein feed. Therefore, the main constraint to use of C. vulgaris as a feedstuff is its high cost of production, making improvement of cultivation technology to reduce the production costs a critical issue in the near future.

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“…Selenium is usually added to feed in inorganically or organically bound forms − sodium selenite and selenate vs. selenomethionine, selenium proteinate, lactate-protein selenium complex, seleniumenriched yeast, selenium-enriched alga Chlorella, selenium-enriched alga Scenedesmus quadricauda, dimethylselenonium propionate etc. (Trávníček et al, 2008(Trávníček et al, , 2010Heindl et al, 2010;Skřivan et al, 2010a, b;Wang et al, 2011). In some experiments it was documented that the organic form of selenium (especially selenomethionine) is more available than inorganic forms (Pavlata et al, 2001; Gunter et al, 2003; Kuricová et al, 2003Weiss and Hogan, 2005; Guyot et al, 2007; Pechova et al, 2008Steen et al, 2008;Sevcikova et al, 2011;Pavlata et al, 2011a).…”

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confidence: 99%

Comparison of organic and inorganic forms of selenium in the mother and kid relationship in goats

Pavlata¹,

Mišurová²,

Pechová³

et al. 2012

Czech J. Anim. Sci.

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During pregnancy and lactation the mother's demands for selenium increase because selenium is necessary for the foetus and the newborn kids (Smith and Picciano, 1986; Anan et al., 2009). A decrease in the concentration of selenium in the blood was confirmed during parturition and beginning of lactation . Selenium concentrations also decreased in the liver of pregnant animals as compared to the non-pregnant ones; it was discovered that selenium The goal of the experiment was to compare the effect of four different forms of selenium (Se) − sodium selenite (SS), lactate-protein selenium complex (SL), selenium enriched yeast (SY), and seleniumproteinate (SP) supplemented to pregnant goats on Se concentration and glutathione peroxidase (GSH-Px) activity in the blood of goats on the day of delivery and also on Se concentration and GSH-Px activity in the blood of newborn kids. The experiment involved 33 pregnant goats of White Short-haired breed. The supplementation started 6 weeks before the parturition. The goats were divided into 5 groups: control group C, not supplemented, and 4 trial groups (SL, SP, SS, SY), which received Se in the above stated forms by the means of supplemented pellets (300 g per animal per day) at a rate 900 μg Se/kg of dry matter. The average Se concentrations in the blood of the goats were 79.6 μg/l in group C, 152.6 μg/l in group SL, 167.1 μg/l in group SP, 144.9 μg/l in group SS, and 152.9 μg/l in group SY. Selenium concentrations in all 4 trial groups were significantly higher (P < 0.01) than in control group, however no significant difference was found between individual trial groups. Likewise, the activity of GSH-Px in goat blood increased significantly in all supplemented groups compared to the controls; however we did not discover any significant differences in activity of GSH-Px between the individual selenium-supplemented groups. The Se concentrations in the blood of kids were significantly (P < 0.01) higher in the selenium-supplemented groups (SL -94.9 μg/l, SP -87.5 μg/l, SS -87.6 μg/l, SY -92.5 μg/l) than in the control group (C -49.4 μg/l), but we did not discover any differences between the individual experimental groups. The activity of GSH-Px in the blood of the kids tended towards higher values in the supplemented groups than in the control group, but the values were significantly higher (P < 0.05) only in groups SY and SL. We have found significant correlation between GSH-Px activity and Se concentration in the blood of goats (r = 0.86) and newborn kids (r = 0.95). Likewise, there was significant correlation between Se concentration in the blood of goats and their kids (r = 0.74). We discovered that the kids are reaching physiologically only about 60% of Se status in whole blood in comparison with their mothers. Our results are suggesting that all the above forms of Se were similarly utilised and transferred into the foetus in the goats.

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Iodine status in ewes with the intake of iodine enriched alga Chlorella

Cited by 7 publications

References 16 publications

Se and I status in pregnant ewes from a pastoral system and the effect of supplementation with Se and I or only Se on wool quality of lambs

Se and I status in pregnant ewes from a pastoral system and the effect of supplementation with Se and I or only Se on wool quality of lambs

Chlorella vulgaris microalgae in Ruminant Nutrition: a Review of the Chemical Composition and Nutritive Value

Comparison of organic and inorganic forms of selenium in the mother and kid relationship in goats

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