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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
11
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pubmed:dateCreated |
1991-5-21
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pubmed:abstractText |
An experiment was conducted to determine the influence of dietary Ca (2, 4, and 6%) and P (.3 and .6% total) on urinary Ca and pH and on plasma Ca++ and inorganic P (Pi) in commercial Leghorn hens. Urine (six hens per treatment) or blood (eight hens per treatment) was collected from hens at 0, 7, 14, and 21 h postoviposition on Days 3 and 10 after its introduction to treatment diets. Low dietary P reduced (P less than or equal to .05) plasma Pi concentrations. The lowest concentration of dietary Ca reduced (P less than or equal to .05) plasma Ca++. Urinary pH and Ca were lowest at 14 h after oviposition. Increasing dietary Ca from 4 to 6% had no influence on urinary Ca excretion when the diet contained .6% P. However, when the diet contained 4% Ca, lowering dietary P (from .6% to .3%) increased urinary Ca significantly. Increasing dietary Ca to 6% in the presence of low dietary P further elevated urinary Ca. Urine was acidic with all diets except with that containing 6% Ca and .3% P at 14 h after oviposition. Results indicate that low dietary P has a greater influence on elevating urinary Ca in laying hens than excess dietary Ca.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Nov
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pubmed:issn |
0032-5791
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
69
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1991-7
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pubmed:dateRevised |
2003-11-14
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pubmed:meshHeading |
pubmed-meshheading:2087454-Animals,
pubmed-meshheading:2087454-Calcium,
pubmed-meshheading:2087454-Calcium, Dietary,
pubmed-meshheading:2087454-Chickens,
pubmed-meshheading:2087454-Female,
pubmed-meshheading:2087454-Hydrogen-Ion Concentration,
pubmed-meshheading:2087454-Oviposition,
pubmed-meshheading:2087454-Phosphorus
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pubmed:year |
1990
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pubmed:articleTitle |
Influence of dietary calcium and phosphorus on urinary calcium in commercial leghorn hens.
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pubmed:affiliation |
Department of Poultry Science, Auburn University, Alabama 36849.
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pubmed:publicationType |
Journal Article
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