Journal
ANIMAL SCIENCE JOURNAL
Volume 88, Issue 6, Pages 918-924Publisher
WILEY
DOI: 10.1111/asj.12785
Keywords
inorganic phosphate; phosphorus; standardized total tract digestibility; swine
Categories
Funding
- National Research Foundation of Korea (NRF) grant - Korea government (MSIP) [2016R1A2B2015665]
- National Research Foundation of Korea [2016R1A2B2015665] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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An experiment was conducted to determine the standardized total tract digestibility (STTD) of phosphorus (P) in five sources of inorganic phosphate fed to growing pigs, including dicalcium phosphate (DCP), monodicalcium phosphate (MDCP), monocalcium phosphate (MCP), tricalcium phosphate (TCP) and monosodium phosphate (MSP, reagent grade). Six barrows (42.4 +/- 1.1kg) individually housed in metabolism crates were allotted to a 6x6 Latin square design with six dietary treatments and six periods. Each experimental period consisted of a 4day adaptation period and a 5day collection period. The five experimental diets contained 0.24 to 0.34% of P from each inorganic phosphate as a sole source of P. A P-free diet was also prepared to estimate the basal endogenous loss of P. The STTD of P in MSP (94.9%) was not different from the STTD of P in MCP (93.0%), but was greater (P<0.05) than that in DCP, MDCP and TCP (87.0, 86.5 and 71.3%, respectively). In conclusion, digestibility of P in reagent-grade MSP was greater than that in feed-grade inorganic phosphates such as DCP, MDCP and TCP, and digestibility of P in DCP and MDCP was greater than that in the TCP.
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