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Standardized total tract digestibility of phosphorus in various inorganic phosphates fed to growing pigs
Author(s) -
Kwon Woong Bi,
Kim Beob Gyun
Publication year - 2017
Publication title -
animal science journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.606
H-Index - 38
eISSN - 1740-0929
pISSN - 1344-3941
DOI - 10.1111/asj.12785
Subject(s) - phosphate , monocalcium phosphate , chemistry , phosphorus , zoology , reagent , calcium , inorganic phosphate , biochemistry , biology , fish <actinopterygii> , organic chemistry , fishery , fish meal
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 ± 1.1 kg) individually housed in metabolism crates were allotted to a 6 × 6 Latin square design with six dietary treatments and six periods. Each experimental period consisted of a 4 day adaptation period and a 5 day 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 .