| Project/Area Number |
07556061
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Zootechnical science/Grassland science
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
MATSUI Tohru Kyoto University, Graduate School of Agriculture, Associate Professor, 農学研究科, 助教授 (40181680)
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| Co-Investigator(Kenkyū-buntansha) |
YANO Fumiko Faculty of Biology-Oriented Science, Kinki University, Associate Professor, 生物理工学部, 助教授 (30101249)
NAKAJIMA Takashi The University of Shiga Prefecture, School of Environmental Science, Professor, 環境科学部, 教授 (50074050)
YANO Hideo Kyoto University, Graduate School of Agriculture, Professor, 農学研究科, 教授 (20026587)
菊島 直 株式会社菱六, 研究室, 研究員
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| Project Period (FY) |
1995 – 1997
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| Project Status |
Completed (Fiscal Year 1997)
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| Budget Amount *help |
¥7,000,000 (Direct Cost: ¥7,000,000)
Fiscal Year 1997: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1996: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 1995: ¥4,500,000 (Direct Cost: ¥4,500,000)
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| Keywords | Phytase / Phosphorus / Zinc / Calcium / Phytate / Pig / 利 / 利用性 / ニワトリ / マグネシウム |
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| Research Abstract |
In the first experiment, growing pigs were fed a soybeam meal-based diet (SBM), a fermented soybean meal-based diet (FSBM) or a SBM-based diet supplied inorganic phosphate (SBM+P) and mineral availability was investigated. The apparent absorption rate was higher in the FSBM group than in the other group. The apparent phosphorus absorption did not differ between the SMB group and the SBM+P group. The fermentation did not affect copper availability. However, the FSBM group showed higher concentrations of femoral zinc and liver iron than did the other groups. These results indicated that the fermentation degraded phytate in soybean meal, which resulted in the improvement of these mineral availabilities. In the second experiment, growing pigs were fed a SBM-based diet, a FSBM-diet or Skim milk (SM)-based diet to study the absorption of calcium and ionized calcium concentration in the digesta of small intestine. Calcium absorption was lower in the SBM and the FSBM groups than in the SM group. The concentration of ionized calcium in duodenal and ileal digesta was also lower in the SBM and the FSBM groups than in the SM group. These results suggested that soy-based diets suppressed calcium absorption through reducing ionized calcium in the small intestine. Additionally, phytate in SBM did not affect calcium absorption and the concentration of ionized calcium in the digesta of the small intestine.
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