Selenium yeast: Composition, quality, analysis, and safety

Schrauzer, G. N.

doi:10.1351/pac200678010105

Cited by 120 publications

(95 citation statements)

References 18 publications

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“…The main reason for the increased Se deposition in eggs by SY is that the majority of Se in SY is selenomethionine, a Se analogue of methionine (Kelly and Power, 1995). The other organic Se components have not yet been clearly identified, but act as Se-Met precursors, although there is some recent evidence (Polatajko et al, 2005) that selenomethionine represents approximately 80% of the organic selenium in Se yeast, in some cases reaching levels of over 90% (Schrauzer, 2006). Se-Met is deposited in the egg to a greater extent than selenium selenite, and is actively absorbed and incorporated into eggs as effectively as methionine (Combs and Combs, 1986).…”

Section: Selenium In Eggsmentioning

confidence: 99%

“…Over past years, organic sources of Se, such as selenium yeast, have been explored as an alternative to inorganic supplementation (Payne et al, 2005;Utterback et al, 2005;Schrauzer, 2006). Selenium yeast from Saccharomyces cerevisiae may assimilate up to 3000 µg of Se/g (Schrauzer, 2003) where the major product is Se-Met.…”

Section: Introductionmentioning

confidence: 99%

“…Inorganic forms such as sodium selenite are absorbed by passive diffusion and incorporated into selenoenzymes or excreted; organic forms can be either utilised for incorporation into selenoenzymes or incorporated non-specifically in place of methionine into general body proteins via methionine transporter mechanisms (Suzuki and Ogra, 2002;Weiss, 2003). Furthermore, several studies on supplementation indicated that Se from selenium yeast exhibits greater bioavailability than that from inorganic Se sources, and that increased Se levels are maintained for a longer period after supplementation has ceased (Dumont et al, 2006;Schrauzer, 2006;Yoon et al, 2007). While many studies have suggested positive results on egg (Davis et al, 1996;Cantor et al, 2000), blood, liver and kidney (Jiakui and Xiaolong, 2004) Se content, feeding organic rather than inorganic forms of Se in poultry, very few papers have considered Se accumulation and distribution in tissues using organic or inorganic sources.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Inclusion of Selenium-Enriched Yeast in the Diet of Laying Hens on Performance, Eggshell Quality, and Selenium Tissue Deposition

Invernizzi

Agazzi

Ferroni

et al. 2013

Italian Journal of Animal Science

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The aim of this study was to evaluate the bioavailability of ingested selenium (Se) yeast in laying hens and its effects on performance, eggshell quality, and tissue Se distribution. Forty-eight ISA brown laying hens were divided into 3 treatment groups: Group C, fed a basal diet containing 0.11 mg Se/kg of feed; Group SS, fed a basal diet plus 0.4 mg/kg of feed of Se from sodium selenite; and Group SY, fed a basal diet plus 0.4 mg/kg of feed of Se from selenium yeast. Feed intake, egg mass ratio, and production performance were not affected by Se supplementation, regardless of the Se source. Egg weight (+3.61% and +2.95%), eggshell weight (+4.26% and +5.38%), and eggshell surface (+2.43% and +1.96%) were higher (P<0.05) in SS and SY than C, whereas breaking strength was increased in SY (P<0.01). Breast muscle, liver and skin Se levels were higher in SY than in C, while kidney Se content was higher in SS hens. Eggs from SY had higher Se levels than SS. Blood metabolites were not affected in SS or SY groups than C. A higher Se level was detected in eggs and breast muscle of SY hens (P<0.05). Seleniumenriched eggs and edible tissues from organic Se sources in poultry diet could improve antioxidant status in humans and reduce possible Se deficiency-related diseases.

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Section: Selenium In Eggsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Inclusion of Selenium-Enriched Yeast in the Diet of Laying Hens on Performance, Eggshell Quality, and Selenium Tissue Deposition

Invernizzi

Agazzi

Ferroni

et al. 2013

Italian Journal of Animal Science

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“…The FEEDAP Panel notes that organic selenium such as selenised yeast, in which Se-Met is the predominant selenium form (selenised yeasts contains ≥90% selenium in the form of Se-Met (Schrauzer, 2006)), when used as a selenium source in dairy cows, shows 3.6 higher potency to increase milk selenium content compared to sodium selenite (meta-analysis of 33 studies; Ceballos et al, 2009). …”

Section: Milk Deposition Study In Dairy Cowsmentioning

confidence: 99%

Scientific Opinion on safety and efficacy of hydroxy-analogue of selenomethionine as feed additive for all species

Högstrand¹

2013

EFSA Journal

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The additive hydroxy-analogue of selenomethionine consists of synthetic R,S-2-hydroxy-4-methylselenobutanoic acid (HMSeBA) and is intended to be used as a source of the essential trace element selenium for all animal species/categories. Based on data from tolerance studies in chickens and turkeys for fattening and piglets, the additive is considered as safe for all species/categories up to the maximum authorised total selenium level in complete feed. After being absorbed, HMSeBA is metabolised to selenomethionine; consequently, no residues of the compound itself occur in animal tissues and products. Compared with inorganic selenium sources, the use of HMSeBA in animal nutrition would result in a similar increase in selenium deposition in animal tissues/products as that resulting from selenised yeast. To ensure consumer safety from consumption of food originating from animals supplemented with HMSeBA, the FEEDAP Panel concluded that selenium supplementation from the additive should not exceed a maximum of 0.2 mg Se/kg complete feed. The additive should be regarded as an eye irritant, but should not be classified as skin irritant or skin sensitiser. Inhalation exposure poses a hazard to users; the FEEDAP Panel concludes, therefore, that the formulation and conditions of use of the solid form of the additive should minimise user exposure by inhalation. The use of HMSeBA in feed does not pose an additional risk to the environment, compared to other sources of selenium for which it will substitute, as long as the maximum authorised content in feedingstuffs is not exceeded. Based on the response of plasma glutathione peroxidase activity and the plasma/liver concentration of selenium in chickens for fattening and pigs for fattening, the FEEDAP Panel considers that HMSeBA is an efficaceous source of selenium for all animal species/categories. HMSeBA does not modify the quality of meat as measured by physico-chemical properties. SUMMARYFollowing a request from the European Commission, the Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) was asked to deliver a scientific opinion on the safety and efficacy of the hydroxy-analogue of selenomethionine (HMSeBA) as feed additive for all species. The additive is intended to be used as a source of the essential trace element selenium in animal nutrition.Data from tolerance studies on chickens and turkeys for fattening and piglets showed that the additive HMSeBA is a safe selenium source when used up to the maximum authorised total selenium content in complete feed. A safety margin of ten was identified. Provided the maximum authorised total selenium content in complete feed is not exceeded, the use of HMSeBA as a selenium source is considered to be safe for all animal species/categories.Based on a toxicology testing package (acute toxicity, genotoxicity in vitro and in vivo, repeated dose toxicity) it is concluded that HMSeBA does not elicit adverse unexpected effects for a selenium compound. After being absorbed, HMSeBA is metabolised to selen...

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“…En la actualidad se viene empleando el selenio orgánico como parte del suplemento mineral en el alimento de animales, incluso en peces. En la producción de este nutriente, también llamado selenolevadura, se utilizan cepas de Saccharomyces cerevisiae, las cuales biotransforman el selenio inorgánico mayormente a selenometionina, que es absorbido y metabolizado como la metionina, pero con la ventaja de su mayor digestibilidad y biodisponibilidad; obviando, además, el problema del envenenamiento por selenio (Schrauzer, 2006). Hilton et al (1982) demostraron que la absorción gástrica de selenio es eficiente y se le encuentra en mayor concentración en el hígado y riñón.…”

Section: Introductionunclassified

EFECTO DE DIETAS ENRIQUECIDAS CON VITAMINA E Y SELENIO ORGÁNICO EN EL COMPORTAMIENTO PRODUCTIVO Y CALIDAD FUNCIONAL DEL FILETE DE TRUCHA ARCO IRIS (Oncorhynchus mykiss).

Rodríguez

Rojas

2014

Rev. investig. vet. Perú

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RESUMENEl objetivo del presente estudio fue evaluar dietas enriquecidas con vitamina E y selenio orgánico sobre el comportamiento productivo y la calidad funcional del filete de truchas arco iris (Oncorhynchus mykiss). El estudio se hizo en el Centro Piscícola «El Ingenio» en Huancayo, Perú, con 4200 truchas juveniles (164 g de peso) durante 40 días. Se trabajó con una dieta basal (tratamiento 1), dos niveles de vitamina E (25 y 50 ppm y tres niveles de selenio orgánico (0.15, 0.25 y 0.35 ppm). Se asignaron 600 peces por cada uno de los siete tratamientos y se tuvo tres repeticiones por cada uno (n=200) en un diseño experimental completamente al azar. Se evaluó la ganancia de peso, conversión alimenticia y eficiencia proteica. Además, se determinó el contenido de vitamina E, selenio, nitrógeno de bases volátiles totales y el estado de oxidación en el filete congelado. Los datos se sometieron al análisis de varianza, la prueba múltiple de Tukey y la prueba de Dunnett. La suplementación de la dieta con 50 ppm de vitamina E y 0.35 ppm de selenio orgánico mejoró la ganancia de peso, la conversión alimenticia y la eficiencia proteica (p<0.05); asimismo, esta dieta mejoró la calidad funcional del filete de trucha en relación al grupo control (p<0.05), al tener la capacidad de almacenar 0.23 mg de selenio/kg de filete. ABSTRACTThe aim of this study was to evaluate diets enriched with vitamin E and organic selenium on the productive performance and meat quality of rainbow trout (Oncorhynchus mykiss). The study was carried out in the fish farm «El Ingenio» in Huancayo, Peru with 4200 juvenile trout (164 g of body weight) during 40 days. A basal diet (treatment 1), two levels of vitamin E (25 and 50 ppm) and three levels of organic selenium (0.15, 0.25 and 0.35 ppm) were used. In the study, 600 trout were assigned per each of the seven treatments, using three repetitions per treatment (n=200) in a completely randomized design. Body weight gain, feed conversion ratio, and protein efficiency ratio were evaluated. Besides, in the frozen meat content of vitamin E, selenium and total volatile basic nitrogen, and the oxidation state were determined. Data was processed by the analysis of variance, the Tukey multiple comparison test and the Dunnett's test. The diet supplemented with 500 ppm of vitamin E and 0.35 ppm of organic selenium improved body weight gain, feed conversion ratio and protein efficiency ratio (p<0.05). Likewise, this diet improved the meat quality in relation to the control group (p<0.05) due to its capacity to store 0.23 mg of selenium per kilogram of trout meat.Key words: rainbow trout, organic selenium, vitamin E, supplementation, diets INTRODUCCIÓNLos suplementos nutricionales como vitaminas y minerales traza para animales de granja y peces son esenciales para su salud, bienestar y niveles productivos (Fisher, 2008). Además, la suplementación de micronutrientes mejora la calidad funcional de la carne (color, sabor, pérdida por goteo, ternura y vida útil del músculo) (Soetan et al., 2010). En la actualidad...

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Selenium yeast: Composition, quality, analysis, and safety

Cited by 120 publications

References 18 publications

Effects of Inclusion of Selenium-Enriched Yeast in the Diet of Laying Hens on Performance, Eggshell Quality, and Selenium Tissue Deposition

Effects of Inclusion of Selenium-Enriched Yeast in the Diet of Laying Hens on Performance, Eggshell Quality, and Selenium Tissue Deposition

Scientific Opinion on safety and efficacy of hydroxy-analogue of selenomethionine as feed additive for all species

EFECTO DE DIETAS ENRIQUECIDAS CON VITAMINA E Y SELENIO ORGÁNICO EN EL COMPORTAMIENTO PRODUCTIVO Y CALIDAD FUNCIONAL DEL FILETE DE TRUCHA ARCO IRIS (Oncorhynchus mykiss).

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