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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
6
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pubmed:dateCreated |
1987-8-28
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pubmed:abstractText |
A study was conducted to determine the impact of dietary P intake on vitamin D metabolism and incidence of parturient paresis in aged dairy cows. Thirty dairy cows (10/group) were fed one of three experimental diets for approximately 28 d precalving. Phosphorus intake was .7, 1, or 3 times daily maintenance requirement and Ca intake was three times daily maintenance requirement for all cows. There was a 20% incidence of parturient paresis in each group. Prepartum dietary P intake had no effect on precalving or calving plasma Ca concentrations. Cows fed the low P (.7 times) diet had higher plasma Ca at 3 and 5 d postcalving than did cows fed P at 1 or 3 times maintenance. Plasma phosphorus concentrations reflected dietary P intake. Dietary P intake had no effect on plasma Mg, free hydroxyproline, 1,25-dihydroxyvitamin D, or 24,25-dihydroxyvitamin D concentrations. The range in dietary P from .7 to 3 times maintenance requirement had no effect on the incidence of parturient paresis. However, it did appear to influence Ca homeostasis during the postpartum period as cows fed the low P diet had higher plasma calcium concentrations postcalving. This may be a result of the low P diet enhancing intestinal C absorption by a vitamin D-mediated transport mechanism.
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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 |
Jun
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pubmed:issn |
0022-0302
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
70
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1186-91
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:3611474-Aging,
pubmed-meshheading:3611474-Animals,
pubmed-meshheading:3611474-Calcium,
pubmed-meshheading:3611474-Cattle,
pubmed-meshheading:3611474-Cattle Diseases,
pubmed-meshheading:3611474-Female,
pubmed-meshheading:3611474-Homeostasis,
pubmed-meshheading:3611474-Parturient Paresis,
pubmed-meshheading:3611474-Phosphorus,
pubmed-meshheading:3611474-Pregnancy,
pubmed-meshheading:3611474-Pregnancy, Animal,
pubmed-meshheading:3611474-Vitamin D
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pubmed:year |
1987
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pubmed:articleTitle |
Impact of prepartum dietary phosphorus intake on calcium homeostasis at parturition.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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