[Studies on the stability of ferrous ion in the feeds added iron lactate during storage].

Studies on the stability of ferrous ion in the feeds added iron lactate were conducted for a chronic toxicity test. No significant changes in contents of ferrous ion were observed in all samples when feeds containing 0.2 and 5% of iron lactate were stored in the dark at room temperature (25 +/- 2 degrees C) for 72 hours, or feeds containing 1 and 2% iron lactate stored at 4 degrees C for 90 days.