Bioaccessibility of Se from Se-enriched wheat and chicken meat

Govasmark, Espen; Brandt‐Kjelsen, Anicke; Szpunar, Joanna; Bierła, Katarzyna; Vegarud, Gerd Elisabeth; Salbu, Brit

doi:10.1351/pac-con-09-06-01

Cited by 22 publications

(16 citation statements)

References 29 publications

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“…These data show that Se from SW result in similar Se concentrations in muscle as do SY, and based on these criteria SW could be an Se source for biofortification of Se in chickens, as suggested by [64]. The increased concentration of Se in muscle from organic Se in dietary treatments has been shown by several authors, and is attributed to the unspecific uptake of SeMet in the methionine pathway resulting in an unspecific storage of Se in muscle proteins [7,[64][65][66].…”

Section: Bioavailability Of Se: Total Se Concentrationssupporting

confidence: 69%

Selenium Requirements and Metabolism in Poultry

Brandt‐Kjelsen¹,

Salbu²,

Haug³

et al. 2017

Poultry Science

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Abstract"s counteract against deiciency in livestock, dietary treatments are supplemented with selenium Se , usually as the inorganic form sodium selenite SS . Since Se is considered as toxic as well as an essential element, SS is added to prevent an increase of Se in edible chicken parts. However, in many countries, populations sufer from suboptimal Se intake and even Se deiciency, by increasing the use of organic Se sources such as Seenriched yeast or wheat in animal feed, there will be a subsequent increase in meat and egg products for human consumption. One could argue that the chickens do not need the extra pool of Se in muscles, as the inorganic form will be suicient to meet the chickens Se requirements. Since the feed is fortiied with selenite, the chickens will always have adequate access to the essential trace element. However, global gene set functional enrichment analysis revealed statistically signiicant enrichment of a number of biological processes that were dependent on the Se feed sources, such as cell growth, organ development and protein metabolism in favour of organic Se.

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Section: Bioavailability Of Se: Total Se Concentrationssupporting

confidence: 69%

Selenium Requirements and Metabolism in Poultry

Brandt‐Kjelsen¹,

Salbu²,

Haug³

et al. 2017

Poultry Science

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“…The higher milk Se concentrations on ORG farms are most probably due to the inclusion of Se-rich fishmeal in the diets. Organically bound Se is more bioavailable than inorganic Se (selenite) and is translocated more efficiently to storage proteins and to milk; therefore, feeding organic Se results in higher milk Se concentrations than when feeding inorganic Se (Calamari et al, 2010;Govasmark et al, 2010). Thus, the potentially higher amount of Se supplied and the higher Se bioavailability of the supplements may explain the higher Se concentration in milk produced on ORG farms.…”

Section: Effects On Fat-soluble Vitamins and Se In Milk And On Milk Smentioning

confidence: 99%

Effect of short-term versus long-term grassland management and seasonal variation in organic and conventional dairy farming on the composition of bulk tank milk

Adler

Jensen

Govasmark

et al. 2013

Journal of Dairy Science

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Bulk tank milk from 28 dairy farms was sampled every second month for 2 yr to assess the effects of grassland management, production system and season on milk fatty acid (FA) composition, concentrations of fat-soluble vitamins, Se, and milk sensory quality. Grassland management varied in terms of time since establishment. Short-term grassland management (SG) was defined as establishment or reseeding every fourth year or more often, and long-term grassland management (LG) was defined as less frequent establishment or reseeding. Fourteen organic (ORG) dairy farms with either short-term or long-term grassland management were paired with 14 conventional (CON) farms with respect to grassland management. Within ORG farms, SG farms differed from LG farms in herbage botanical composition, but not in concentrate FA concentrations, dry matter intake, or milk yield. Within CON farms, herbage composition, concentrate FA concentrations, dry matter intake, and milk yield showed no or insignificant variations. The ORG farms differed from CON farms in herbage botanical composition, concentrate FA concentrations, concentrate intake, and milk yield. Compared with ORG-LG farms, ORG-SG farms produced milk fat with higher proportions of C10:0 and C12:0 associated with higher herbage proportions of legumes (Fabaceae) and lower proportions of other dicotyledon families. Compared with milk from CON farms, milk fat from ORG farms had higher proportions of most saturated FA and all n-3 FA, but lower proportions of C18:0 and C18:1 cis-9 associated with higher forage proportion and differences in concentrations of FA in concentrates. Compared with the outdoor-feeding periods, the indoor feeding periods yielded milk fat with higher proportions of most shortchain and medium-chain FA and lower proportions of most C18-FA associated with grazing and higher forage proportions. Milk concentrations of α-tocopherol and β-carotene were lower during the grazing periods. Inclusion of fishmeal in organic concentrates may explain higher Se concentrations in organically produced milk. Milk sensory quality was not affected in this study. In conclusion, grassland management had minor effects on milk composition, and differences between ORG farms and CON farms may be explained by differences in concentrate intake and concentrate FA concentrations. Milk produced on ORG farms versus CON farms and milk produced during the outdoor versus indoor feeding periods had potential health benefits due to FA composition. In contrast, the higher milk-fat proportions of saturated FA in milk from ORG farms may be perceived as negative for human health.

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“…Hence, the specific activity of the 75 Se‐enriched wheat grains was very high (5 × 10 14 Bq/g Se, carrier free). The 75 Se‐enriched wheat grains (69 ± 4 Bq/g grain, n = 54) were harvested at maturity, dried and stored prior to analyses and feeding trial (Govasmark et al., ).…”

Section: Methodsmentioning

confidence: 99%

“…In comparison with selenite, organic Se has been shown to improve the growth rate, breast muscle weight and feed conversion ratio and decrease mortality and drip loss during storage (Choct and Naylor, ; Choct et al., ). The bioavailability of Se‐enriched yeast and wheat sources is reported to be higher compared with inorganic selenite in chickens and humans (Meltzer et al., ; Haug et al., ; Govasmark et al., ).…”

Section: Introductionmentioning

confidence: 99%

Turnover of Se in adequately fed chickens using Se‐75 as a tracer

Brandt‐Kjelsen

Govasmark

Haug

et al. 2013

Animal Physiology Nutrition

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Inorganic selenium (Se) in the form of selenite is applied to livestock to avoid Se deficiency. Selenite is, however, an artificial Se source in diets of unsupplemented chickens. It is therefore hypothesized that organic Se sources, such as Se-enriched yeast and wheat, could be a more suitable Se supply in animal nutrition, although information on the transition of Se from organic Se sources in fast-growing chickens is scarce. In this work, chickens were fed a low Se diet (0.27 ± 0.01 mg Se/kg, Se-enriched yeast) until 20 days of age, after which the Se concentration was increased to maximum concentration allowed by the poultry industry in Europe (0.5 p.p.m. Se). At the same time, a daily contribution of carrier-free (75)Se tracer from labelled wheat was administered from day 20 to 27. The chickens showed S and Se homeostasis, as the concentration of S and Se in liver, blood or kidney remained about constant, and steady state of S and Se in the other organs was reached 1 day after the diet shift. The uptake of (75)Se was readily seen in all organs. After 1 week, the depuration of the (75)Se tracer was followed, and biological half-lives and retention in individual organs were determined. The shortest biological half-lives were observed in major metabolic organs, the liver, kidney and pancreas with half-lives close to 4 days. There was a significant (p < 0.05) uptake in lung, brain and muscle that reached steady state when the administration of (75)Se was terminated. The half-life of (75)Se in heart was 9 days and 7 days in blood. The longest half-lives were observed in muscle (12 days), brain and lungs (13 days). All half-lives were shorter than in Se deplete animals.

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Bioaccessibility of Se from Se-enriched wheat and chicken meat

Cited by 22 publications

References 29 publications

Selenium Requirements and Metabolism in Poultry

Selenium Requirements and Metabolism in Poultry

Effect of short-term versus long-term grassland management and seasonal variation in organic and conventional dairy farming on the composition of bulk tank milk

Turnover of Se in adequately fed chickens using Se‐75 as a tracer

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