蛋氨酸锌络（螯）合物 — additive cross-jurisdiction identity

Derived crosswalk of how one feed additive is named and authorised across three jurisdictions. No claim of regulatory equivalence is made — pairings are anchored on the substance identity, and the verdict states where the definitions actually diverge.

Substance anchor: 蛋氨酸锌络（螯）合物
Verdict: closest_with_differences

Per-jurisdiction entry

🇨🇳 CN — 公告2045 蛋氨酸锌络（螯）合物: 蛋氨酸锌络（螯）合物 is listed in 表一饲料添加剂品种目录 (category 氨基酸、氨基酸盐及其类似物 for amino acids / 矿物元素及其络（螯）合物 for chelates / 维生素及类维生素 for vitamins), scope 养殖动物 (all livestock and poultry). _(src: CN 公告2045)_
🇪🇺 EU — Reg 1831/2003 (EU) 2019/1125: Commission Implementing Regulation (EU) 2019/1125 of 5 June 2019 concerning the authorisation of zinc chelate of methionine sulfate as a feed additive for all animal species (Text with EEA relevance _(src: EU (EU) 2019/1125)_
🇺🇸 AAFCO (US) — Ch.6 57.28 Metal Methionine Hydroxy Analogue Chelate: Metal Methionine Hydroxy Analogue Chelate is the product resulting from the reaction of a metal salt with 2-hydroxy-4-methylthiobutanoic acid (HMTBa), having a chelated molar ratio of one mole of metal to two moles of HMTBa to form coordinate covalent bonds. _(src: AAFCO OP 2024 Ch.6, code 57.28)_

Crosswalk verdict

CN 公告2045 lists 蛋氨酸锌络（螯）合物 (zinc methionine chelate); EU 2019/1125 authorises zinc chelate of methionine sulfate for all animal species. AAFCO OP 2024 Ch.6 defines Metal Methionine Hydroxy Analogue Chelate (57.28) — a metal-chelated methionine hydroxy analogue, the closest methionine-chelate class. Verdict: CN↔EU equivalent; AAFCO form is the hydroxy analogue.

Sources

CN: 农业部公告第2045号《饲料添加剂品种目录》 (first-hand; fujian compile txt, intra-cell line wraps normalised for verbatim quotation)
EU: https://eur-lex.europa.eu/eli/reg_impl/2019/1125/oj/eng (first-hand EUR-Lex, fetched 2026-08-07)
AAFCO: OP 2024 Ch.6 code 57.28 (Metal Methionine Hydroxy Analogue Chelate)

蛋氨酸锌络（螯）合物 — additive cross-jurisdiction identity