DL Methionine animal feed supplement for livestock is chelated by DL-methionine and zinc sulphate 1. Resulting from the reaction of a mole of zinc ion to a moles of methionine, high chelate percentage ,the greatest stability. 2. High bioavailability , better nutrition of zinc,is a kind of better feed additive 3. Don't be affected by pH value, inorganic ions and organic macromolecules in digestive tract. Higher utilization ratio [Product function] 1. The bioavailability of animal feed supplement for livestock significantly better than other organic zinc. 2. Solve the problem of hoof crack for sows efficiently . 3. Increase the laying, fertilization, and hatching rates, improve the quality of eggshell. 4. Leads to the removal of rough and messy feather, obtaining bright feather. And decrease in cannib alism of pecking the plume and anus. 5. Increase feed intake effectively , can improve animal growth and the resistance of disease.promote more nutrition 6.This zinc methionine can suplement animals nore nutrition healthy,can make the animals growth