Selenium in animal nutrition

Gardiner, M. R.

doi:10.1177/003072706900600104

Cited by 37 publications

(22 citation statements)

References 1 publication

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“…One area of research has been concerned with the minimal Se concentration required in the diet to prevent WMD (1,9,10,11,18). Results from studies in this research area indicate that the critical deficiency level in the diet is actually a range from 0.03 to 0.07 ppm, depending upon the vitamin E level and other factors.…”

Section: Effect Of Phosphorus Fertilization On the Selenium Concentramentioning

confidence: 99%

Effect of Phosphorus Fertilization on the Selenium Concentration in Alfalfa (Medicago sativa)

Carter¹,

Robbins²,

Brown³

1972

Soil Science Soc of Amer J

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A study was conducted to determine the effect of P fertilization on the Se concentration in alfalfa. Adding P to the soil increased the Se concentration in alfalfa grown in the greenhouse on six of 14 soils from the northwestern United States. The Se concentration increase in alfalfa resulting from P addition was noted on some alkaline and some acid soils. Phosphorus addition increased the availability to alfalfa of both native and applied Se in the Portneuf silt loam. Applying 160 kg P/ha either as H3PO4 or concentrated superphosphate to Gooding sandy loam in the field increased the Se concentration in alfalfa from a level marginal for animal requirements to an adequate level.

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Section: Effect Of Phosphorus Fertilization On the Selenium Concentramentioning

confidence: 99%

Effect of Phosphorus Fertilization on the Selenium Concentration in Alfalfa (Medicago sativa)

Carter¹,

Robbins²,

Brown³

1972

Soil Science Soc of Amer J

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“…Nutrient interaction studies conducted on Se-rich agriculture soils, for example, have shown that excessive use of phosphorus fertilizers increases Se concentrations in forage plants to levels potentially toxic for Downloaded by [University of California Santa Barbara] at 06:07 10 June 2016 cattle and sheep [14,15,16]. However, the reported effects of P on Se uptake are inconsistent with one another [17,18]. Finding the best P levels for maximizing mustard's Se uptake may be critical for managing Se removal in high-concentration areas.…”

Section: Introductionmentioning

confidence: 99%

Relations between phosphorus in drip irrigation water and selenium uptake by wild mustard

Bañuelos

Mead

Phene

et al. 1992

Journal of Environmental Science and Health . Part A: Environme

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A field study determined that phosphorus concentrations influence the accumulation of selenium in the plant tissue of wild brown mustard (Brassica juncea czem L.). The main treatment was a one-way H 3 PO 4 application at five different concentrations (less than 1, 10, 25, 50, and 100 mg P/L). A constant concentration of 5 mg Se/L was added as Na 2 SeO 4 with each application. The H 3 PO 4 and Se additions were injected daily by a surface drip irrigation system. Plant dry weight yields did not vary significantly from one phosphorus treatment level to another, but plant tissue concentrations of Se and P increased, soil Se decreased, and soil P increased as H 3 PO 4 application concentrations increased. Thus, adding phosphate to the soil in irrigation water contributed to Se-accumulation in mustard and led to lower levels in the soil. 283

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“…The effectiveness of selenium and vitamin E in bringing about a remission in gross calcification was noted in this work, but no study was made of the significance of calcium deposition in the early stages of the disease. Later reports from New Zealand (Andrews et al 1968) and Australia (Gardiner 1969) refer to calcification and recognize it as a feature in the overall pathology.…”

Section: Introductionmentioning

confidence: 99%

Retention of 45Ca in Rats and Lambs Associated with the Onset of Nutritional Muscular Dystrophy

Godwin¹,

Edwardly²,

Fuss³

1975

Aust. Jnl. Of Bio. Sci.

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Nutritional myopathy has been induced in both rats and lambs by feeding diets low in selenium. The distribution of 45Ca, administered as 45CaC12, has been examined firstly by autoradiography, and secondly by measuring the excretion of 45Ca in urine and faeces. Autoradiographs of skeletal muscle from unsupplemented animals showed radioactivity over discrete muscle fibres at a stage when no abnormalities were apparent using conventional staining techniques. Similar retention of 45Ca was found in some of the tubules in the kidneys of selenium-deficient rats.. Total excretion in urine and faeces of lambs, examined for 48 h after intravenous administration of 45CaC12, showed that in normal animals 18· 6 % of the dose was excreted, whereas in dystrophic lambs 12·0 % was lost. The difference was significant at the 2 % level.The respiratory rates of isolated skeletal muscle mitOChondria, measured polarographically in the presence of glutamate and pyruvate as substrates, were low for dystrophic rats. Respiratory control indices were 1· 0 for the same preparations but for supplemented rats they were all above 1· o. The differences in respiratory rates were significant at the 1 % level.The major conclusion drawn from the results of these experiments is that one of the first effects of selenium deficiency which can be visualized is the abnormal retention of calcium by individual muscle fibres.

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Selenium in animal nutrition

Cited by 37 publications

References 1 publication

Effect of Phosphorus Fertilization on the Selenium Concentration in Alfalfa (Medicago sativa)

Effect of Phosphorus Fertilization on the Selenium Concentration in Alfalfa (Medicago sativa)

Relations between phosphorus in drip irrigation water and selenium uptake by wild mustard

Retention of 45Ca in Rats and Lambs Associated with the Onset of Nutritional Muscular Dystrophy

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