T/JLSLGY 0001-2020 Active Group standards

T/JLSLGY 0001-2020 The quality evaluation of whole-plant corn silage

Publish Date: 2020-11-17 Implement Date: 2020-12-17 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/JLSLGY 0001-2020

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Integrated agriculture and forestry

ICS Name: \nFeeds

Publish Date: 2020-11-17

Implement Date: 2020-12-17

Scope

Scope: This document specifies the terms and definitions, technical requirements, inspection methods, and quality assessment for whole-plant corn silage feed. This document is applicable to the grading and assessment of whole-plant corn silage feed. Main technical content: 4. Technical requirements 4.1 Sensory requirements shall comply with the requirements specified in Table 1. Inspection methods: - Color: close to the original color or yellow-green, without black-brown or mold stains. - Take a suitable sample and place it in a clean, dry white magnetic disk. Observe its color, tissue morphology, impurities, and smell under natural light, and taste it. - Tissue morphology: clear stem and leaf structure, loose texture, no stickiness or clumping, no dry or hard texture. - Odor: mild alcoholic or acidic aroma, no irritating or putrid odor. - Impurities: no visible foreign impurities. 4.2 Physical indicators 4.2.1 Silage cutting shall be neat and without stringiness. 4.2.2 The crushing rate of corn seeds shall be ≥90%. 4.2.3 The results of the Penn State sieve test shall be as follows: the upper sieve accounts for 10%-15%, the middle sieve 65%-75%, and the lower sieve 15%-30%. 4.3 Quality grading 4.3.1 Nutritional indicator grading Grade Excellent Good Ordinary Dry matter, % ≥32 <38 ≥30 <32 ≥28 <30 Starch, % ≥35 ≥30 <35 ≥28 <30 7-hour starch digestibility, % ≥70 ≥60 <70 Acid detergent fiber (ADF), % <25 ≥25 <30 Neutral detergent fiber (NDF), % ≤40 >40, ≤45 NDF 30-hour digestibility, % NDF ≥60 ≥55 <60 Note: 1. ADF, NDF, and Starch are expressed as a percentage of dry matter. 2. The grade is determined according to the lowest value of each indicator. 4.3.2 Hygiene and fermentation indicator grading Grade Excellent Good Ordinary pH ≥3.3 <4.2 Aflatoxin, ppb <2 ≥2 <5 ≥5 <8 Vomitoxin, ppb <300 ≥300 <1000 Zearalenone, ppb <100 ≥100 <200 ≥200 <300 Ammonia nitrogen, CP % <8 ≥8 <10 <15 Lactic acid, % ≥8.0 ≥6.0 <8.0 Butyric acid, % <0.02 Note: 1. Lactic acid and butyric acid are