Factors affecting the amino acid chelators ( Boron Chelate、Selenium Chelate、Manganese Chelate).

1. Add levels

The added levels ranged from 15 to 5 000 mg / kg, resulting in a large variability in the biological utilization results. However, at high dose levels, the metabolism and precipitation of chelates in different tissues may reach its saturation point, so that the corresponding sensitive index becomes less sensitive to the super level of replenishment, even if different, ultimately show the same utilization. A more appropriate method is to determine the response curve of the corresponding sensitive index to the addition level, and then within the effective addition level below the inflection point.

2.Animal species

Overall, amino acid chelates have better effects on monogastric animals and birds than ruminants. In addition, it is also related to the growth stage of animals, that is, the better effect on young animals than adult animals.

3. Detection indicators

For amino acid chelates, their bioavailability is related to the measured indicators, such as growth performance, metacarpal, tail spine, tibia and concentration in plasma and tissues (liver and kidney). Relatively speaking, for zinc, copper, iron and manganese, the indexes to evaluate their utilization rate are bone zinc, bile copper, hemoglobin and bone manganese, respectively.

4. Daygrain type

For the diet containing relatively high phytic acid and fiber, amino acid chelates have much greater advantages over inorganic salts. This is because amino acid chelates can avoid the negative effects of phytic acid and fiber in the diet on the absorption of free metal ions.

Factors affecting the amino acid chelators (Boron Chelate、Selenium Chelate、Manganese Chelate).

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