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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
7
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pubmed:dateCreated |
1995-12-6
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pubmed:abstractText |
We conducted a series of 10 feeding trials involving over 36,000 broilers. The effects of various dietary levels of cholecalciferol (vitamin D3) or 25-hydroxycholecalciferol (25-OH-D3) were compared using a "basal" dosage level of 69 micrograms/kg feed, as well as levels ranging from .5 to 1.5 times the basal level. For all 10 studies, average body weight increased by an average of .042 +/- .03 kg (P < .001) and adjusted feed efficiency decreased (improved) by an average of .026 +/- .0046 kg/kg (P < .001) in birds fed 25-OH-D3 in comparison to those fed vitamin D3 at the basal level. Changes in mortality were not detected. Evaluation of different dietary levels of 25-OH-D3 revealed a significant dose-response relationship, with maximal effects on weight gain, feed efficiency, and breast meat yield being observed in the range of 50 to 70 micrograms/kg feed. Preliminary studies with different levels of vitamin D3 suggested no additional benefits on weight gain or feed efficiency with higher dietary levels of vitamin D3. Serum 25-OH-D3 concentrations increased more rapidly in birds fed 25-OH-D3 than in birds fed vitamin D3. There were significant correlations with body weight, feed conversion, and serum 25-OH-D3 concentrations, with no correlations observed between serum 1,25-(OH)2D3 concentrations and these variables.
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pubmed:commentsCorrections | |
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 |
Jul
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pubmed:issn |
0032-5791
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
74
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1159-67
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:7479492-Analysis of Variance,
pubmed-meshheading:7479492-Animal Feed,
pubmed-meshheading:7479492-Animals,
pubmed-meshheading:7479492-Calcifediol,
pubmed-meshheading:7479492-Chickens,
pubmed-meshheading:7479492-Cholecalciferol,
pubmed-meshheading:7479492-Longevity,
pubmed-meshheading:7479492-Vitamin D
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pubmed:year |
1995
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pubmed:articleTitle |
Comparison of dietary 25-hydroxycholecalciferol and cholecalciferol in broiler chickens.
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pubmed:affiliation |
Amoco BioProducts Corporation, Naperville, Illinois 60566, USA.
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pubmed:publicationType |
Journal Article,
Comparative Study
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