| Relative bioavailability of phosphorus in inorganic phosphorus sources fed to growing pigs. | |
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MedLine Citation:
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PMID: 20952526 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The relative bioavailability of P in 5 sources of inorganic P was determined using growing pigs. The 5 sources of inorganic P were dicalcium phosphate (DCP), monocalcium phosphate (MCP) containing 50% MCP (MCP50), MCP containing 70% MCP (MCP70), MCP containing 100% MCP (MCP100), and monosodium phosphate (MSP). A total of 11 diets were formulated. The basal diet was formulated to contain 0.10% P, and 10 additional diets were formulated by adding 0.07 or 0.14% P from each of the 5 P sources to the basal diet. Growing pigs (n = 44; initial BW: 16.8 ± 4.3 kg) were individually housed and randomly allotted to the 11 experimental diets. Feed was provided on an ad libitum basis throughout the 28-d experimental period. At the conclusion of the experiment, all pigs were killed, and 4 bones (i.e., the third and fourth metacarpals on both front feet) were harvested. Bone-breaking strength, bone ash, and Ca and P concentrations were determined. The concentration of bone ash increased (P < 0.05) as MCP50, MCP70, MCP100, or MSP were added to the basal diet, and the concentration of bone P also increased (P < 0.05) as MCP70, MCP100, or MSP were added to the basal diet. The relative bioavailability of P in each of the feed phosphates was determined using slope ratio methodologies based on breaking strength, and expressed relative to MSP. The slope of the regression line for diets containing MSP or MCP100 was steeper (P < 0.05) than the slope for pigs fed the diet containing DCP, but not different (P > 0.05) from that of pigs fed diets supplemented with MCP50 or MCP70. In conclusion, P in MSP and MCP100 is more bioavailable than P in DCP, but there were no differences within MCP sources. |
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Authors:
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G I Petersen; C Pedersen; M D Lindemann; H H Stein |
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Publication Detail:
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Type: Journal Article Date: 2010-10-15 |
Journal Detail:
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Title: Journal of animal science Volume: 89 ISSN: 1525-3163 ISO Abbreviation: J. Anim. Sci. Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-01-25 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8003002 Medline TA: J Anim Sci Country: United States |
Other Details:
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Languages: eng Pagination: 460-6 Citation Subset: IM |
Affiliation:
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Department of Animal and Range Sciences, South Dakota State University, Brookings 57007. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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