Iron bioavailability in soybean meal as affected by supplemental phytase and 1 alpha-hydroxycholecalciferol
Open Access
- 1 October 1997
- journal article
- research article
- Published by Elsevier in Poultry Science
- Vol. 76 (10), 1424-1427
- https://doi.org/10.1093/ps/76.10.1424
Abstract
An Fe depletion-repletion chick bioassay was conducted to determine whether supplemental microbial phytase or 1 alpha-hydroxycholecalciferol (1 alpha-OH D3) would improve the bioavailability of Fe in soybean meal (SBM). Weight gain, hemoglobin, and hematocrit were markedly improved when increasing levels (0, 10, 20, and 80 mg/kg) of Fe from analytical grade ferrous sulfate (FeSO4.7H2O) were added to the Fe-deficient casein-dextrose basal diet containing 20 mg Fe/kg. Addition of 19 mg Fe/kg from SBM to the basal diet improved (P < 0.05) hemoglobin and hematocrit, but the response was less than that obtained from 10 mg Fe/kg from FeSO4.7H2O. Phytase (1,430 units/kg), 1 alpha-OHD3 (10 micrograms/kg), or the combination, added to the SBM-fortified basal diet did not further improve hematocrit or hemoglobin, indicating that Fe bioavailability of SBM was not increased by either of these feed additives. Based on standard-curve methodology, and using hemoglobin as a criterion, the relative bioavailability of Fe was 38.5% for SBM, 21.0% for SBM+phytase, 23.2% for SBM+1 alpha-OHD3, and 29.2% for SBM+phytase+ 1 alpha-OHD3.Keywords
This publication has 24 references indexed in Scilit:
- Utilization of phytate and nonphytate phosphorus in chicks as affected by source and amount of vitamin D3.Journal of Animal Science, 1997
- Efficacy of supplemental 1 alpha-hydroxycholecalciferol and microbial phytase for young pigs fed phosphorus- or amino acid-deficient corn-soybean meal diets.Journal of Animal Science, 1996
- 1α-Hydroxylated Cholecalciferol Compounds Act Additively with Microbial Phytase to Improve Phosphorus, Zinc and Manganese Utilization in Chicks Fed Soy-Based Diets1Journal of Nutrition, 1995
- Iron Requirement of Chicks Fed a Semipurified Diet Based on Casein and Soy Protein ConcentratePoultry Science, 1995
- Effect of Microbial Phytase and 1,25-Dihydroxycholecalciferol on Dietary Copper Utilization in ChicksPoultry Science, 1995
- The relative bioavailability of iron from feedstuffs of plant and animal origin to the chickNutrition Research, 1988
- Pairwise multiple comparisons of treatment means in agronomic researchJournal of Agronomic Education, 1985
- The Iron-Zinc Interrelationship in the Chick as Influenced by Eimeria acervulina InfectionJournal of Nutrition, 1984
- Oilseed phytates: Nutritional implicationsJournal of Oil & Fat Industries, 1979
- The effects of phytate on intestinal absorption and secretion of zinc, and whole-body retention of Zn, copper, iron and manganese in ratsBritish Journal of Nutrition, 1975