Methionine (DL – 2 – amino – 4 - (methylthio) – butanoic acid, DL – methionine, α – amino – Y – methylthiobutyric acid) refers to the group of sulphur-containing amino acids and is the first essential amino acid for livestock and poultry. Methionine feed grade is a synthetic product produced by chemical means. It is used in rations for livestock and poultry as a supplement, especially in shortage of fodders containing animal materials. A balanced feed determines genetic productivity in the poultry industry. Methionine plays an essential role in metabolism, muscle growth and contributes to rapid growth in young stock. Methionine shortage leads to growth reduction, poor feathering, muscle atrophy, liver fattening and decreased bone strength.
Specification
| INDEX | STANDARD |
|---|---|
| Appearance | Crystalline powder |
| Methionine mass fraction, % | ≥ 99 |
| Water and volatiles mass fraction, % | ≤ 0.3 |
| Ash mass fraction, % | ≤ 0.5 |
| Sieving residue mass fraction, using Ø d=1 mm sieve, % | ≤ 0.5 |
| Cyanide compounds, mg/kg | ≤ 2 |
| Arsenic, mg/kg | ≤ 2 |
| Fluorine, mg/kg | ≤ 100 |
| Lead, mg/kg | ≤ 5 |
| Cadmium, mg/kg | ≤ 0.3 |
| Hydrargyrum, mg/kg | ≤ 0.1 |
