Selenite and Selenium Yeast as Feed Supplements for Dairy Cows

Ortman, K.; Pehrson, B.

doi:10.1111/j.1439-0442.1997.tb01121.x

Cited by 52 publications

(35 citation statements)

References 17 publications

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“…The highly significant differences in selenium concentrations in the liver, striated muscles and myocardium between the control group and the groups receiving organic selenium, as well as between the groups receiving organic and inorganic selenium demonstrate the higher efficacy of organic selenium also in terms of tissue concentrations. Similar results were published by Ortman and Pehrson (1997) as well as Knowles et al (1999) who investigated blood, liver and milk selenium concentrations in cows receiving selenium yeast.…”

Section: Discussionsupporting

confidence: 86%

Blood and Tissue Selenium Concentrations in Calves Treated with Inorganic or Organic Selenium Compounds – a Comparison

Illek¹,

Pechová²

2001

Acta Vet. Brno

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Selenium concentrations were investigated in 5 calves treated parenterally with inorganic selenium (Group II), 5 calves treated orally with organic selenium (Group III), and 5 untreated control calves (Group I). Blood samples for analyses were collected at the beginning and at the end of the treatment period and tissue samples (liver, kidney, striated muscle, myocardium) after slaughter. Selenium was determined in the samples after microwave mineralisation using the hydride technique of AAS. Both treated groups showed highly significant increases in whole blood selenium concentrations (Group II from 53.4 ± 10.5 to 75.9 ± 4.0 µg.l -1 ; Group III from 70.25 ± 12.07 to 127.5 ± 16.7 µg.l -1 ). The comparison of tissue concentrations showed highly significant differences (P < 0.01) in the liver (213.3 ± 56.8, 206.5 ± 36.2 and 424.7 ± 88.4 µg.kg -1 wet tissue for the Groups I, II, and III, respectively), striated muscles (92.4 ± 29.2, 81.4 ± 12.1, and 263.4 ± 47.4 µg.kg -1 wet tissue for the Groups I, II and III, respectively), and myocardium (121.5 ± 31.8, 108.3 ± 9.6, and 251.4 ± 51.0 µg.kg -1 wet tissue for the Groups I, II and III, respectively) not only between Groups I and II, but also between Groups II and III. The among-group differences in selenium concentrations in the kidney (991.9 ± 49.1, 960.6 ± 36.3, and 1050.5 ± 336.8 µg.kg -1 wet tissue in the Groups I, II and III, respectively) were nonsignificant. It is apparent that oral administration of organic selenium resulted in higher tissue concentrations than parenteral administration of inorganic selenium. Highly significant (P < 0.01) correlations were found between selenium concentrations in the liver and striated muscles, in the liver and the myocardium, and in striated muscles and the myocardium (r = 0.78, 0.85, and 0.94, respectively). No relations were found between selenium concentrations in the kidney and other tissues. Highly significant (P < 0.01) correlations were also between the concentrations of selenium in the blood and in the liver, striated muscles, and the myocardium (r = 0.85, 0.80, and 0.77, respectively). Cattle, liver, striated muscle, myocardium, kidneyRecent knowledge of biological effects of trace elements has prompted studies of their effects on animal health and performance. The importance of such studies is enhanced by the use of trace elements as feed additives as a replacement for antibiotic and hormonal growth stimulants. Considerable attention in this respect is paid to selenium. The principal source of this element for animals are plants. Groce et al. (1995), who studied correlations between the contents of essential trace elements in soil, forages, and blood, found a highly significant correlation coefficient (r = 0.96) for selenium. Availability of soil selenium to plants depends on soil acidity, structure and degree of aeration. Availability of oxidised forms is higher than that of the reduced form which remains undissolved in the soil. Selenium is incorporated into plant tissues mostly in the form of selenomethionine pre...

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Section: Discussionsupporting

confidence: 86%

Blood and Tissue Selenium Concentrations in Calves Treated with Inorganic or Organic Selenium Compounds – a Comparison

Illek¹,

Pechová²

2001

Acta Vet. Brno

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“…De qualquer maneira, esses estudos têm demonstrado uma maior eficiência de formas orgânicas do Se em aumentar a concentração de Se no sangue e leite de vacas, se comparado às inorgânicas (Tabela 1). Contudo, maior concentração destas formas nas dietas de vacas em lactação de alta produção também implica maiores perdas através da excreção de Se pela glândula mamária, através da caseína e de outras proteínas do leite, que incorporam aleatoriamente SeMet da dieta (MALBE et al, 1995;ORTMAN & PEHRSON, 1997;KNOWLES et al, 1999;MUÑIZ-NAVEIRO et al, 2005). Nesta situação, a proporção que sobra para o animal suprir suas exigências por Se, ou seja, para manter ativas e em normal funcionamento as selenoproteínas funcionais, não é conhecida.…”

Section: Gierusunclassified

Fontes orgânicas e inorgânicas de selênio na nutrição de vacas leiteiras: digestão, absorção, metabolismo e exigências

Gierus¹

2007

Cienc. Rural

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“…The main Se supplement that has been used in animal diets is the inorganic form (sodium selenite or selenate). Some studies indicated that organic selenium from selenomethionine (SeMet) or Se enriched yeast is an ideal additive because animals absorb and retain it more than inorganic selenium (Ortman and Pehrson, 1997). Organic selenium is needed not only for healthy and productive animals but also for the production of meat, milk and other products which are rich in selenium (Surai, 2002).…”

Section: Introductionmentioning

confidence: 99%

Effect of different selenium sources (Selenium yeast and Sodium selenite) on haematology, blood chemistry and thyroid hormones in male goats (Capra hircus)

Sethy

Dass

Garg

et al. 2015

IJAR

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Present study was undertaken to elucidate the effect of selenium yeast and sodium selenite supplementation on haematology, blood biochemical parameters and hormones in goats. 18 male kids (2-3 months of age and 6.63 ± 0.30 kg average BW) were stratified by their body weight and randomly assigned to three different treatments, fed a basal diet consisting of concentrate mixture and oat straw. In addition kids in group II and III were supplemented with 0.3 mg selenium kg -1 DM as selenium yeast and sodium selenite respectively. This experimental feeding lasted for 180 days, during which blood samples were collected on day 0, 60,120 and 180 days. Hemoglobin content and packed cell volume were statistically similar (P>0.05) among the three groups. Non significant differences were also observed for the serum glucose, total protein, albumin, globulin, A: G ratio, urea, creatinine and total cholesterol (P>0.05) among all the groups. But, concentration of triiiodothyronine (T 3 ) was significantly (P<0.05) increased while concentration of thyroxin (T 4 ) and T 4 :T 3 ratio were significantly (P<0.05) decreased in all the supplemented groups. It may be concluded that supplementation of sodium selenite and selenium yeast increased serum level of T 3 which is indicative of the better thyroid hormone homeostasis and thus the better metabolic balance to the body without affecting other blood biochemical parameters of goats.

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Selenite and Selenium Yeast as Feed Supplements for Dairy Cows

Cited by 52 publications

References 17 publications

Blood and Tissue Selenium Concentrations in Calves Treated with Inorganic or Organic Selenium Compounds – a Comparison

Blood and Tissue Selenium Concentrations in Calves Treated with Inorganic or Organic Selenium Compounds – a Comparison

Fontes orgânicas e inorgânicas de selênio na nutrição de vacas leiteiras: digestão, absorção, metabolismo e exigências

Effect of different selenium sources (Selenium yeast and Sodium selenite) on haematology, blood chemistry and thyroid hormones in male goats (Capra hircus)

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