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  • 1
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Summary Barbiturate potentiation was observed in Japanese quail fed dietary levels of 4, 21, and 24 ppm Hg as methyl mercuric chloride. Gross symptoms of mercury poisoning were not observed until after BP was observed. After the initial increase in BP time was observed in the birds receiving 4 and 12 ppm mercury, there followed a plateau in response until those birds receiving 24 ppm Hg began to show gross symptoms of toxicity and the, BP time markedly rose again. Pronounced BP persisted 7 weeks after removal of mercury from the diet reflecting the long biological half-life of mercury as the methyl derivative. Selenium effectively prevented BP after 7 days exposure to toxic levels of methyl mercury chloride. Therefore, results suggest that early toxic effects of mercury can be observed readily by BP and that this environmental contaminant may influence drug activity or increase the sensitivity of the nervous system to sodium pentobarbital.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract Egg and bone of passerine birds nesting in acidified habitats may be affected by high levels of Al or P, or low levels of Ca. Nine treatments of three levels of dietary Al (target levels of 200, 1,000, and 5,000 μg/g) and three levels of Ca:P (target levels of NN = 1.3% Ca: 0.9% P; LL = 0.19 Ca:0.45 P; LH = 0.19 Ca: 1.65 P) were fed to 16–17 starling pairs during two breeding seasons. Eggs of starlings fed the LH diet were smaller and weighed less than eggs from the NN and LL treatments. Treatment effects on thickness, strength, and weight of eggshells were not consistent between seasons, probably because of differences in actual dietary levels of Al, Ca, and P or in incubation intervals. In one season, birds fed the highest Al diet had thicker eggshells than those from the other Al treatments (no effect from Ca:P); the following season, eggshells from the NN and LH treatments were thicker and stronger than those from the LL treatment. Eggshells from the NN treatment weighed more than those from the other Ca:P treatments. Starlings on the LH diet had the strongest femurs, but the effect was interactive with different levels of dietary Al. Effects of Ca:P on egg and bone were more evident than Al effects.
    Type of Medium: Electronic Resource
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