T/NAASS 018-2022 Active Group standards

T/NAASS 018-2022 Ningxia Full-Crop Corn Silage Production Procedures for Large-Scale Dairy Farms

T/NAASS 018-2022

Publish Date: 2022-11-12 Implement Date: 2022-12-16 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/NAASS 018-2022

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Animal husbandry and breeding

Publish Date: 2022-11-12

Implement Date: 2022-12-16

Scope

Scope: This document specifies the technical terms and definitions, harvesting and transportation, filling and compacting, additive selection, silo sealing, quality evaluation, and measurement methods for whole-plant corn silage production in large-scale dairy farms in Ningxia. This document applies to the production and quality evaluation of whole-plant corn silage in large-scale dairy farms in Ningxia; Main technical content: 3 Terms and Definitions The following terms and definitions apply to this document. 3.1 Whole-plant corn silage A forage product made from harvested and processed corn plants under airtight conditions through the fermentation of lactic acid bacteria. [Source: T/CAAA 005-218] 3.2 Silage additives Additives used to improve the fermentation quality of silage and reduce nutrient loss. [Source: NY/T2696-2015] 3.3 Grain broken rate The proportion of broken corn kernels to the total number of corn kernels at harvest. [Source: T/CAAA 005-218] 4 Harvesting and Transportation 4.1 Harvesting selection Select suitable harvesting machinery and harvest during clear weather. Harvest at the corn kernel stage of 1/2 to 2/3 of the milky line, when the dry matter content is 32% to 36%. 4.2 Mowing height The stubble height of whole-plant corn should be ≥15 cm. 4.3 Cutting 4.3.1 The optimal cutting length of whole-plant corn silage is 1 cm to 2 cm. 4.3.2 The grain broken rate should be above 90%. 4.4 Transportation The time required for transporting materials from the field to the grazing area should be controlled between 4 hours and 8 hours. 4.5 Preparation of silage facilities 1 day before making silage, clean and disinfect the silage pits or storage yards. Lay a wall membrane on the silage pit walls, with the seams of the wall membrane overlapping by more than 1 m. Leave a ≥50 cm buffer zone on the ground to wrap the pit bottom. 4.6 Filling and compacting 4.6.1 Compacting equipment and methods Use heavy wheeled