GB 7300.506-2025Feed additives - Part 5: Live microorganisms - Lactobacillus delbrueckii subsp. lactis (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part

1.Structure and Drafting Rules of Standardization Documents". Drafting. This section is Part 505 of GB 7300 "Feed Additives". GB 7300 has already published the following parts.

1.Amino acids, amino acid salts and their analogues L-threonine (GB 7300.101);

1.Amino acids, amino acid salts and their analogues, glycine (GB 7300.102);

1.Amino acids, amino acid salts and their analogues, methionine hydroxy analogues (GB 7300.103);

1.Amino acids, amino acid salts and their analogues L-valine (GB 7300.104);

2.Vitamins and Vitamin-like L-ascorbic acid-2-phosphate salts (GB 7300.201);

1 Scope

GB 7300.506-2025 is the Chinese national standard on feed additives - part 5: live microorganisms - lactobacillus delbrueckii subsp. lactis, in the field of agriculture. It carries no /T suffix, which in the Chinese system means compliance is mandatory: a product or a practice within its scope has to meet it to be lawfully made, sold or carried out in China. It was issued on 31 December 2025 by the State Administration for Market Regulation; Standardization Administration of China, and takes effect on 1 January 2027. Classification: ICS 65.120, CCS B46. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

This document specifies the technical requirements, sampling, inspection rules, labeling, packaging, transportation, and storage of the feed additive *Lactobacillus denudata* subsp. *lactotrichum*. The shelf life and corresponding test methods are described. This document applies to products containing *Lactobacillus delbrueckii* subsp. *lactotrichum*, which undergoes liquid fermentation, separation, with or without carrier addition, and drying processes. The resulting solid feed additive product.

2 Vitamins and Vitamin D

3 Oils (GB 7300.202);

2.Vitamins and Vitamin-like Betaine (GB 7300.203);

2.Vitamins and Vitamin-like Betaine Hydrochloride (GB 7300.204);

2.Vitamins and Vitamin B2-like Riboflavin (Vitamin B2) (GB 7300.205);

2.Vitamins and Vitamin-like Choline Chloride (GB 7300.206);

2.Vitamins and Vitamin-like Nicotinamide (GB 7300.207);

2.Vitamins and Vitamin-like L-Ascorbate Calcium (GB 7300.208);

2.Vitamins and Vitamin B12-like Cyanocobalamin (Vitamin B12) (GB 7300.209);

3.Mineral Elements and Their Complexes (Chelates) - Potassium Iodide (GB 7300.301);

3.Mineral Elements and Their Complexes (Chelates) - Sodium Selenite (GB 7300.302);

3.Mineral Elements and Their Complexes (Chelates) Potassium Iodate (GB 7300.303);

3.Mineral Elements and Their Complexes (Chelates) - Glycine Iron Complex (GB 7300.304);

3.Mineral Elements and Their Complexes (Chelates) - Basic Copper Chloride (GB 7300.305);

3.Mineral Elements and Their Complexes (Chromium Nicotinate) (GB 7300.306);

3 Terms and Definitions

The following terms and definitions apply to this document.

3.1 It belongs to the kingdom Bacteria, phylum Firmicutes, class Bacillus, order Lactobacilli, family Lactobacilli, and genus Lactobacillus.

Note. Gram-positive bacilli, rod-shaped cells, tending to be linear; non-motile. Anaerobic or facultative anaerobic, chemoheterotrophic, homofermentation to produce D-lactic acid. GB 7300.506-2026

5 Microorganisms Lactobacillus acidophilus (GB 7300.504); GB 7300.506-2026

5.Microbial Bacillus coagulans (GB 7300.505);

5.Microorganisms. Lactobacillus denudata subsp. lactis (GB 7300.506);

5.Microorganisms. Enterococcus faecalis (GB 7300.507);

6.Non-protein nitrogen urea (GB 7300.601);

6.Non-protein nitrogen diammonium hydrogen phosphate (GB 7300.602);

8.Preservatives, fungicides and acidity regulators, sodium bicarbonate (GB 7300.801);

8.Preservatives, fungicides and acidity regulators. Propionic acid (GB 7300.802);

8.Preservatives, fungicides and acidity regulators (ammonium chloride) (GB 7300.803);

8 Benzoic acid (GB 7300.804). Preservatives, fungicides and acidity regulators

8.Preservatives, fungicides and acidity regulators (lactic acid) (GB 7300.805);

8.Preservatives, fungicides and acidity regulators, calcium formate (GB 7300.806);

8.Preservatives, fungicides and acidity regulators, calcium citrate (GB 7300.807);

8.Preservatives, fungicides and acidity regulators, sodium diacetate (GB 7300.808);

9.Coloring agent beta-carotene powder (GB 7300.901);

9.Coloring agents beta,beta-carotene-4,4-dione (cantharidin) (GB 7300.902);

10.Monosodium glutamate (MSG), a flavoring and stimulating food ingredient (GB 7300.1001);

10.Allicin, a flavoring and stimulating agent (GB 7300.1002);

10.Flavoring and Enhancing Agent Neomethylhesperidin dihydrochalcone (GB 7300.1003);

13.Other bile acids (GB 7300.1301). Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents. This document was proposed and is under the jurisdiction of the Ministry of Agriculture and Rural Affairs of the People's Republic of China. GB 7300.506-2026

Feed additives refer to small or trace amounts of substances added during feed processing, production, and use, including nutritional feed additives. And general feed additives. For ease of use, GB 7300 "Feed Additives" is divided into the following 13 major categories according to product type.

---Amino acids, amino acid salts and their analogues;

---Vitamins and vitamin-like substances;

---Mineral elements and their complexes;